From bounce-ss-6751@lists.tapr.org Fri Sep 3 18:56:32 1999 Received: from lists.tapr.org (lists.tapr.org [204.17.217.24]) by tapr.org (8.9.3/8.9.3/1.10) with SMTP id SAA27565 for ; Fri, 3 Sep 1999 18:56:30 -0500 (CDT) Mime-Version: 1.0 X-Sender: dewayne@mail.warpspeed.com (Unverified) Message-Id: Date: Fri, 3 Sep 1999 16:54:40 -0700 To: "TAPR Spread Spectrum Special Interest Group" From: Dewayne Hendricks Subject: [ss] Spread Spectrum R&O released WT 97-12 Content-Type: text/plain; charset="us-ascii" ; format="flowed" List-Unsubscribe: List-Software: Lyris Server version 3.0 List-Subscribe: List-Owner: X-List-Host: Tucson Amateur Packet Radio Reply-To: "TAPR Spread Spectrum Special Interest Group" X-Message-Id: Sender: bounce-ss-6751@lists.tapr.org Precedence: bulk The FCC today released the long awaited Report & Order on Amateur Radio Spread Spectrum. I have not seen the entire text as yet, but I thought that I would post a message that outlined what I do know about what the Commission did: o The spreading code limitations have been removed. o SS is NOT allowed in VHF spectrum. o Automatic power control is mandatory. o SS remains secondary to all other modes. As soon as TAPR gets a chance look over the entire text of the R&O, we will post a more detailed analysis of our position on what the Commission has done. Dewayne Hendricks WA8DZP Chair TAPR Regulatory Affairs Committee --- You are currently subscribed to ss as: lyris.ss@tapr.org To unsubscribe send a blank email to leave-ss-6751T@lists.tapr.org From bounce-ss-6751@lists.tapr.org Sat Sep 4 00:45:18 1999 Received: from lists.tapr.org (lists.tapr.org [204.17.217.24]) by tapr.org (8.9.3/8.9.3/1.10) with SMTP id AAA13359 for ; Sat, 4 Sep 1999 00:45:17 -0500 (CDT) Message-Id: X-Sender: rwmcgwier@mail.ewndsr1.nj.home.com Date: Sat, 04 Sep 1999 01:40:56 -0400 To: "TAPR Spread Spectrum Special Interest Group" From: Robert McGwier Subject: [ss] Re: Spread Spectrum R&O released WT 97-12 In-Reply-To: Mime-Version: 1.0 Content-Type: text/plain; charset="us-ascii" List-Unsubscribe: List-Software: Lyris Server version 3.0 List-Subscribe: List-Owner: X-List-Host: Tucson Amateur Packet Radio Reply-To: "TAPR Spread Spectrum Special Interest Group" X-Message-Id: <4.1.19990904013952.0092c470@mail.ewndsr1.nj.home.com> Sender: bounce-ss-6751@lists.tapr.org Precedence: bulk FINALLY, amateur radio spread spectrum becomes interesting but I wonder what the reasoning was concerning VHF? The automatic power control being mandatory is really interesting. Bob At 04:54 PM 09/03/1999 -0700, you wrote: > > The FCC today released the long awaited Report & Order on >Amateur Radio Spread Spectrum. I have not seen the entire text as >yet, but I thought that I would post a message that outlined what I >do know about what the Commission did: > >o The spreading code limitations have been removed. > >o SS is NOT allowed in VHF spectrum. > >o Automatic power control is mandatory. > >o SS remains secondary to all other modes. > > > As soon as TAPR gets a chance look over the entire text of >the R&O, we will post a more detailed analysis of our position on >what the Commission has done. > >Dewayne Hendricks WA8DZP >Chair >TAPR Regulatory Affairs Committee > >--- >You are currently subscribed to ss as: RWMCGWIER@HOME.COM >To unsubscribe send a blank email to leave-ss-6751T@lists.tapr.org --- You are currently subscribed to ss as: lyris.ss@tapr.org To unsubscribe send a blank email to leave-ss-6751T@lists.tapr.org From bounce-ss-6751@lists.tapr.org Sat Sep 4 07:31:15 1999 Received: from lists.tapr.org (lists.tapr.org [204.17.217.24]) by tapr.org (8.9.3/8.9.3/1.10) with SMTP id HAA29592 for ; Sat, 4 Sep 1999 07:31:14 -0500 (CDT) Sender: bounce-ss-6751@lists.tapr.org Message-ID: Date: Sat, 04 Sep 1999 07:29:22 -0500 From: Gerry Creager Reply-To: "TAPR Spread Spectrum Special Interest Group" Organization: DaHouse X-Accept-Language: en MIME-Version: 1.0 To: "TAPR Spread Spectrum Special Interest Group" Subject: [ss] Re: Spread Spectrum R&O released WT 97-12 References: Content-Type: text/plain; charset=us-ascii Content-Transfer-Encoding: 7bit List-Unsubscribe: List-Software: Lyris Server version 3.0 List-Subscribe: List-Owner: X-List-Host: Tucson Amateur Packet Radio X-Message-Id: <37D110A2.ADFA85AA@cs.tamu.edu> Precedence: bulk Robert McGwier wrote: > > FINALLY, amateur radio spread spectrum becomes interesting > but I wonder what the reasoning was concerning VHF? There has been a lot of narrow-band concern about repeater interference from DSSS (primarily) and FHSS (which the repeater folk consider black magic). Comments made it to the Commission regarding those concerns. In a VHF-restriction-only, I suspect they threw a concession to the narrow-band repeater folks. > The automatic power control being mandatory is really > interesting. Indeed! 73, gerry n5jxs --- You are currently subscribed to ss as: lyris.ss@tapr.org To unsubscribe send a blank email to leave-ss-6751T@lists.tapr.org From bounce-ss-6751@lists.tapr.org Sat Sep 4 09:48:47 1999 Received: from lists.tapr.org (lists.tapr.org [204.17.217.24]) by tapr.org (8.9.3/8.9.3/1.10) with SMTP id JAA02586 for ; Sat, 4 Sep 1999 09:48:47 -0500 (CDT) Message-ID: From: "Lanier, Robert" To: "TAPR Spread Spectrum Special Interest Group" Subject: [ss] RE: ss digest: September 03, 1999 Date: Sat, 4 Sep 1999 10:45:55 -0400 MIME-Version: 1.0 Content-Type: text/plain; charset="iso-8859-1" List-Unsubscribe: List-Software: Lyris Server version 3.0 List-Subscribe: List-Owner: X-List-Host: Tucson Amateur Packet Radio Reply-To: "TAPR Spread Spectrum Special Interest Group" X-Message-Id: <275399FB18C4D111871300805FBEB72F03662FFB@corpmx6.ess.harris.com> Sender: bounce-ss-6751@lists.tapr.org Precedence: bulk why would SS not be allowed on the VHF bands? Isn't there less activity here than on say the HF bands? And is this applicable to microwaves as well? -----Original Message----- From: TAPR Spread Spectrum Special Interest Group digest [mailto:ss@lists.tapr.org] Sent: Saturday, September 04, 1999 1:01 AM To: ss digest recipients Subject: ss digest: September 03, 1999 TAPR Spread Spectrum Special Interest Group Digest for Friday, September 03, 1999. 1. Spread Spectrum R&O released WT 97-12 ---------------------------------------------------------------------- Subject: Spread Spectrum R&O released WT 97-12 From: Dewayne Hendricks Date: Fri, 3 Sep 1999 16:54:40 -0700 X-Message-Number: 1 The FCC today released the long awaited Report & Order on Amateur Radio Spread Spectrum. I have not seen the entire text as yet, but I thought that I would post a message that outlined what I do know about what the Commission did: o The spreading code limitations have been removed. o SS is NOT allowed in VHF spectrum. o Automatic power control is mandatory. o SS remains secondary to all other modes. As soon as TAPR gets a chance look over the entire text of the R&O, we will post a more detailed analysis of our position on what the Commission has done. Dewayne Hendricks WA8DZP Chair TAPR Regulatory Affairs Committee --- END OF DIGEST --- You are currently subscribed to ss as: rlanier@harris.com To unsubscribe send a blank email to leave-ss-6751T@lists.tapr.org --- You are currently subscribed to ss as: lyris.ss@tapr.org To unsubscribe send a blank email to leave-ss-6751T@lists.tapr.org From bounce-ss-6751@lists.tapr.org Sat Sep 4 11:40:11 1999 Received: from lists.tapr.org (lists.tapr.org [204.17.217.24]) by tapr.org (8.9.3/8.9.3/1.10) with SMTP id LAA05168 for ; Sat, 4 Sep 1999 11:40:08 -0500 (CDT) Mime-Version: 1.0 X-Sender: dewayne@mail.warpspeed.com Message-Id: Date: Sat, 4 Sep 1999 09:37:03 -0700 To: "TAPR Spread Spectrum Special Interest Group" From: Dewayne Hendricks Subject: [ss] RE: ss digest: September 03, 1999 Content-Type: text/plain; charset="us-ascii" ; format="flowed" List-Unsubscribe: List-Software: Lyris Server version 3.0 List-Subscribe: List-Owner: X-List-Host: Tucson Amateur Packet Radio Reply-To: "TAPR Spread Spectrum Special Interest Group" X-Message-Id: Sender: bounce-ss-6751@lists.tapr.org Precedence: bulk At 09:27 -0700 9/4/99, Lanier, Robert wrote: >why would SS not be allowed on the VHF bands? Isn't there less activity here >than on say the HF bands? And is this applicable to microwaves as well? I can't answer you question until I can read the text of the R&O and see what rationale the Commission used in making their decision. -- Dewayne WA8DZP --- You are currently subscribed to ss as: lyris.ss@tapr.org To unsubscribe send a blank email to leave-ss-6751T@lists.tapr.org From bounce-ss-6751@lists.tapr.org Sat Sep 4 12:04:52 1999 Received: from lists.tapr.org (lists.tapr.org [204.17.217.24]) by tapr.org (8.9.3/8.9.3/1.10) with SMTP id MAA05830 for ; Sat, 4 Sep 1999 12:04:52 -0500 (CDT) Message-ID: Date: Sat, 04 Sep 1999 13:03:16 -0400 From: Jeff King Organization: Aero Data Systems, Inc. X-Accept-Language: en MIME-Version: 1.0 To: "TAPR Spread Spectrum Special Interest Group" Subject: [ss] Re: Spread Spectrum R&O released WT 97-12 References: Content-Type: text/plain; charset=us-ascii Content-Transfer-Encoding: 7bit List-Unsubscribe: List-Software: Lyris Server version 3.0 List-Subscribe: List-Owner: X-List-Host: Tucson Amateur Packet Radio Reply-To: "TAPR Spread Spectrum Special Interest Group" X-Message-Id: <37D150D4.FE5C7B4D@aerodata.net> Sender: bounce-ss-6751@lists.tapr.org Precedence: bulk Gerry Creager wrote: > Robert McGwier wrote: > > > The automatic power control being mandatory is really > > interesting. > > Indeed! I take it that automatic power control would only apply to SS and not other modes, such as DX'ers running kilowatts in pileups? Obviously, many advantages to running power control I.E. the Qualcomm CDMA model, but IMHO if there going to legislate power control, it should be applied to the narrow band interests as well. Then again, maybe this is a first step. Anyone know? -Jeff --- You are currently subscribed to ss as: lyris.ss@tapr.org To unsubscribe send a blank email to leave-ss-6751T@lists.tapr.org From bounce-ss-6751@lists.tapr.org Sat Sep 4 12:51:22 1999 Received: from lists.tapr.org (lists.tapr.org [204.17.217.24]) by tapr.org (8.9.3/8.9.3/1.10) with SMTP id MAA06964 for ; Sat, 4 Sep 1999 12:51:21 -0500 (CDT) Mime-Version: 1.0 Content-Type: text/plain; charset="us-ascii" Message-Id: Date: Sat, 4 Sep 1999 12:44:44 -0500 To: "TAPR Spread Spectrum Special Interest Group" From: Greg Jones Subject: [ss] Re: Spread Spectrum R&O released WT 97-12 List-Unsubscribe: List-Software: Lyris Server version 3.0 List-Subscribe: List-Owner: X-List-Host: Tucson Amateur Packet Radio Reply-To: "TAPR Spread Spectrum Special Interest Group" X-Message-Id: Sender: bounce-ss-6751@lists.tapr.org Precedence: bulk It isn't. APC makes the Part 15 coalition (which doesn't exist anymore now) happy and it is what the ARRL wants as to limit the impact on new technologies in spectrum with the existing paying membership. A sad state of affairs. Oh well, time to crank out some technology in the next several months and then start this process again :-) We will be filing a petition for reconsideration. Just part of the game, but I wouldn't expect we will see anything changed. Does anyone know if an amateur petition for reconsideration has ever been moved on ? Cheers - Greg >Gerry Creager wrote: > >> Robert McGwier wrote: >> >> > The automatic power control being mandatory is really >> > interesting. >> >> Indeed! > >I take it that automatic power control would only apply to SS and >not other modes, such as DX'ers running kilowatts in pileups? >Obviously, many advantages to running power control I.E. the >Qualcomm CDMA model, but IMHO if there going to legislate >power control, it should be applied to the narrow band interests >as well. Then again, maybe this is a first step. Anyone know? > >-Jeff > > > >--- >You are currently subscribed to ss as: WD5IVD@TAPR.ORG >To unsubscribe send a blank email to leave-ss-6751T@lists.tapr.org ----- Greg Jones, WD5IVD Austin, Texas wd5ivd@tapr.org http://www.tapr.org/~wd5ivd --- You are currently subscribed to ss as: lyris.ss@tapr.org To unsubscribe send a blank email to leave-ss-6751T@lists.tapr.org From bounce-ss-6751@lists.tapr.org Sat Sep 4 12:53:45 1999 Received: from lists.tapr.org (lists.tapr.org [204.17.217.24]) by tapr.org (8.9.3/8.9.3/1.10) with SMTP id MAA06993 for ; Sat, 4 Sep 1999 12:53:44 -0500 (CDT) Message-ID: Date: Sat, 4 Sep 1999 12:44:03 -0500 From: Jake Janovetz To: "TAPR Spread Spectrum Special Interest Group" Subject: [ss] Re: Spread Spectrum R&O released WT 97-12 References: Mime-Version: 1.0 Content-Type: text/plain; charset=us-ascii In-Reply-To: ; from Jeff King on Sat, Sep 04, 1999 at 01:03:16PM -0400 List-Unsubscribe: List-Software: Lyris Server version 3.0 List-Subscribe: List-Owner: X-List-Host: Tucson Amateur Packet Radio Reply-To: "TAPR Spread Spectrum Special Interest Group" X-Message-Id: <19990904124403.A30253@tempest.ece.uiuc.edu> Sender: bounce-ss-6751@lists.tapr.org Precedence: bulk Jeff, I don't quite understand why power control would be needed for narrow band folks. Power control is used in DSSS CDMA systems to minimize the near-far problem with SS radios. The reason this is crucial is that all the radios are using the same band and are subject to each other as interferers. In narrow band systems, only one station is allowed to transmit. If two start transmitting at the same time, they interfere -- plain and simple. CDMA allows multiple stations to transmit concurrently _without_ interfering through the use of (pseudo-)orthogonal spreading codes, given that power control is efficient. Cheers, Jake On Sat, Sep 04, 1999 at 01:03:16PM -0400, Jeff King wrote: > > > Gerry Creager wrote: > > > Robert McGwier wrote: > > > > > The automatic power control being mandatory is really > > > interesting. > > > > Indeed! > > I take it that automatic power control would only apply to SS and > not other modes, such as DX'ers running kilowatts in pileups? > Obviously, many advantages to running power control I.E. the > Qualcomm CDMA model, but IMHO if there going to legislate > power control, it should be applied to the narrow band interests > as well. Then again, maybe this is a first step. Anyone know? > > -Jeff > > > > --- > You are currently subscribed to ss as: JANOVETZ@UIUC.EDU > To unsubscribe send a blank email to leave-ss-6751T@lists.tapr.org -- janovetz@uiuc.edu | Once you have flown, you will walk the earth with University of Illinois | your eyes turned skyward, for there you have been, | there you long to return. -- da Vinci PP-ASEL | http://www.ews.uiuc.edu/~janovetz/index.html --- You are currently subscribed to ss as: lyris.ss@tapr.org To unsubscribe send a blank email to leave-ss-6751T@lists.tapr.org From bounce-ss-6751@lists.tapr.org Sat Sep 4 15:56:23 1999 Received: from lists.tapr.org (lists.tapr.org [204.17.217.24]) by tapr.org (8.9.3/8.9.3/1.10) with SMTP id PAA12775 for ; Sat, 4 Sep 1999 15:56:22 -0500 (CDT) Message-ID: Date: Sat, 04 Sep 1999 16:53:42 -0400 From: Jeff King Organization: Aero Data Systems, Inc. X-Accept-Language: en MIME-Version: 1.0 To: "TAPR Spread Spectrum Special Interest Group" Subject: [ss] Re: Spread Spectrum R&O released WT 97-12 References: Content-Type: text/plain; charset=us-ascii Content-Transfer-Encoding: 7bit List-Unsubscribe: List-Software: Lyris Server version 3.0 List-Subscribe: List-Owner: X-List-Host: Tucson Amateur Packet Radio Reply-To: "TAPR Spread Spectrum Special Interest Group" X-Message-Id: <37D186D6.F3D73DEB@aerodata.net> Sender: bounce-ss-6751@lists.tapr.org Precedence: bulk Hi Jake: The key here is to think how things really are deployed (in amateur radio) as opposed to how they should be deployed in theory (which more often then not, is ignored by most amateurs). Jake Janovetz wrote: > I don't quite understand why power control would be needed > for narrow band folks. Because they commonly run far more power then is needed to maintain communications. You have two settings on many 2/440 meter rigs, low (15 watts) and high (50 watts). Often 50 _milliwatts_ is just fine. Try to convince a narrowband operator that they only need to run 50 milliwatts most of the time. And that 50 watt operator could be in the center of your DSSS signal. That 50 watts means you need 30db more process gain in your DSSS system to get rid of the narrowband interference (as opposed to if the narrowband op was running 50 milliwatts) > Power control is used in DSSS CDMA > systems to minimize the near-far problem with SS radios. Yes, that is like the Qualcomm CDMA system I mentioned. I know the advantages of power control for a homogenous DSSS network. I'm told much of the time these radios are operating at less then 50 milliwatts. > The > reason this is crucial is that all the radios are using the same > band and are subject to each other as interferers. In narrow > band systems, only one station is allowed to transmit. If two > start transmitting at the same time, they interfere -- plain and > simple. CDMA allows multiple stations to transmit concurrently > _without_ interfering through the use of (pseudo-)orthogonal > spreading codes, given that power control is efficient. Yes, in an ideal homogenous radio network. Amateur radio is not. You will have narrowband emitters in the same band as DSSS. Hence, it will be advantageous for both systems to use power control as its been my experience that DSSS is quite sensitive to narrowband emitters, especially the DSSS part 15 stuff with its low process gain. Anyways, didn't mean to go off on a tangent. I was just irritated that spread spectrum is still being treated as a second class citizen by the great majority of amateur radio. Call me a radical but I think that the narrowband stuff should be secondary to SS. Best regards, Jeff wb8wka --- You are currently subscribed to ss as: lyris.ss@tapr.org To unsubscribe send a blank email to leave-ss-6751T@lists.tapr.org From bounce-ss-6751@lists.tapr.org Mon Sep 6 10:21:46 1999 Received: from lists.tapr.org (lists.tapr.org [204.17.217.24]) by tapr.org (8.9.3/8.9.3/1.10) with SMTP id KAA15332 for ; Mon, 6 Sep 1999 10:21:45 -0500 (CDT) From: Barry McLarnon VE3JF Message-Id: Date: Mon, 6 Sep 1999 11:17:21 -0400 (EDT) To: "TAPR Spread Spectrum Special Interest Group" Subject: [ss] Re: Spread Spectrum R&O released WT 97-12 In-Reply-To: MIME-Version: 1.0 Content-Type: text/plain List-Unsubscribe: List-Software: Lyris Server version 3.0 List-Subscribe: List-Owner: X-List-Host: Tucson Amateur Packet Radio Reply-To: "TAPR Spread Spectrum Special Interest Group" X-Message-Id: <199909061517.LAA04674@lynx.ve3jf.ampr.org> Sender: bounce-ss-6751@lists.tapr.org Precedence: bulk Jake Janovetz wrote: > Jeff, > > I don't quite understand why power control would be needed > for narrow band folks. Power control is used in DSSS CDMA > systems to minimize the near-far problem with SS radios. The > reason this is crucial is that all the radios are using the same > band and are subject to each other as interferers. In narrow > band systems, only one station is allowed to transmit. If two > start transmitting at the same time, they interfere -- plain and > simple. CDMA allows multiple stations to transmit concurrently > _without_ interfering through the use of (pseudo-)orthogonal > spreading codes, given that power control is efficient. As Jeff points out, power control on narrowband signals would make the spectrum more usable for SS. Moreover, there is even a near-far problem of sorts when you consider only narrowband signals. This is because narrowband transmitters and receivers are not perfect - the transmitters have sidebands outside their nominal bandwidth, and the receivers have finite rejection of out-of-band signals. Thus a nearby narrowband transmitter can interfere with your reception on a different (non-overlapping) frequency. In other words, narrowband signals on different channels within a band are only pseudo-orthogonal too - power control would allow them to more closely approach the ideal of orthogonality. Barry -- Barry McLarnon VE3JF | bm@hydra.carleton.ca Ottawa Amateur Radio Club | bm@lynx.ve3jf.ampr.org Packet Working Group | http://hydra.carleton.ca --- You are currently subscribed to ss as: lyris.ss@tapr.org To unsubscribe send a blank email to leave-ss-6751T@lists.tapr.org From bounce-ss-6751@lists.tapr.org Mon Sep 6 10:41:38 1999 Received: from lists.tapr.org (lists.tapr.org [204.17.217.24]) by tapr.org (8.9.3/8.9.3/1.10) with SMTP id KAA15703 for ; Mon, 6 Sep 1999 10:41:37 -0500 (CDT) Message-ID: Date: Mon, 6 Sep 1999 10:38:04 -0500 From: Jake Janovetz To: "TAPR Spread Spectrum Special Interest Group" Subject: [ss] Re: Spread Spectrum R&O released WT 97-12 References: Mime-Version: 1.0 Content-Type: text/plain; charset=us-ascii In-Reply-To: ; from Barry McLarnon VE3JF on Mon, Sep 06, 1999 at 11:17:21AM -0400 List-Unsubscribe: List-Software: Lyris Server version 3.0 List-Subscribe: List-Owner: X-List-Host: Tucson Amateur Packet Radio Reply-To: "TAPR Spread Spectrum Special Interest Group" X-Message-Id: <19990906103804.B1412@tempest.ece.uiuc.edu> Sender: bounce-ss-6751@lists.tapr.org Precedence: bulk Yes, all your points are well-taken. I suppose what I was considering was "closed-loop power control." I just don't like the idea of forcing all narrow-band AM/FM/CW transmitters to have the ability for closed- loop power control. [this was meant to be funny] I guess I just presume that a ham will always use the moniker "When not in use, turn down the juice." Cheers, Jake On Mon, Sep 06, 1999 at 11:17:21AM -0400, Barry McLarnon VE3JF wrote: > Jake Janovetz wrote: > > Jeff, > > > > I don't quite understand why power control would be needed > > for narrow band folks. Power control is used in DSSS CDMA > > systems to minimize the near-far problem with SS radios. The > > reason this is crucial is that all the radios are using the same > > band and are subject to each other as interferers. In narrow > > band systems, only one station is allowed to transmit. If two > > start transmitting at the same time, they interfere -- plain and > > simple. CDMA allows multiple stations to transmit concurrently > > _without_ interfering through the use of (pseudo-)orthogonal > > spreading codes, given that power control is efficient. > > As Jeff points out, power control on narrowband signals would make > the spectrum more usable for SS. Moreover, there is even a near-far > problem of sorts when you consider only narrowband signals. This is > because narrowband transmitters and receivers are not perfect - the > transmitters have sidebands outside their nominal bandwidth, and the > receivers have finite rejection of out-of-band signals. Thus a > nearby narrowband transmitter can interfere with your reception on > a different (non-overlapping) frequency. In other words, narrowband > signals on different channels within a band are only pseudo-orthogonal > too - power control would allow them to more closely approach the ideal > of orthogonality. > > Barry > > > -- > Barry McLarnon VE3JF | bm@hydra.carleton.ca > Ottawa Amateur Radio Club | bm@lynx.ve3jf.ampr.org > Packet Working Group | http://hydra.carleton.ca > > --- > You are currently subscribed to ss as: JANOVETZ@UIUC.EDU > To unsubscribe send a blank email to leave-ss-6751T@lists.tapr.org -- janovetz@uiuc.edu | Once you have flown, you will walk the earth with University of Illinois | your eyes turned skyward, for there you have been, | there you long to return. -- da Vinci PP-ASEL | http://www.ews.uiuc.edu/~janovetz/index.html --- You are currently subscribed to ss as: lyris.ss@tapr.org To unsubscribe send a blank email to leave-ss-6751T@lists.tapr.org From bounce-ss-6751@lists.tapr.org Tue Sep 7 09:10:08 1999 Received: from lists.tapr.org (lists.tapr.org [204.17.217.24]) by tapr.org (8.9.3/8.9.3/1.10) with SMTP id JAA04991 for ; Tue, 7 Sep 1999 09:10:08 -0500 (CDT) From: Jake Brodsky To: "TAPR Spread Spectrum Special Interest Group" Subject: [ss] Re: Spread Spectrum R&O released WT 97-12 Date: Tue, 07 Sep 1999 10:06:18 -0400 Reply-To: "TAPR Spread Spectrum Special Interest Group" Message-ID: References: In-Reply-To: MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii List-Unsubscribe: List-Software: Lyris Server version 3.0 List-Subscribe: List-Owner: X-List-Host: Tucson Amateur Packet Radio X-Message-Id: Sender: bounce-ss-6751@lists.tapr.org Precedence: bulk Content-Transfer-Encoding: 8bit X-MIME-Autoconverted: from quoted-printable to 8bit by tapr.org id JAA04991 On Fri, 3 Sep 1999 16:54:40 -0700, you wrote: > The FCC today released the long awaited Report & Order on >Amateur Radio Spread Spectrum. Could someone post a URL to the FCC's web site with the R&O text? Jake Brodsky, mailto:frussle@erols.com "Nearly fifty percent of all graduates came from the bottom half of the class." --- You are currently subscribed to ss as: lyris.ss@tapr.org To unsubscribe send a blank email to leave-ss-6751T@lists.tapr.org From bounce-ss-6751@lists.tapr.org Tue Sep 7 13:17:58 1999 Received: from lists.tapr.org (lists.tapr.org [204.17.217.24]) by tapr.org (8.9.3/8.9.3/1.10) with SMTP id NAA12409 for ; Tue, 7 Sep 1999 13:17:57 -0500 (CDT) Message-ID: From: "Hare, Ed, W1RFI" To: "TAPR Spread Spectrum Special Interest Group" Subject: [ss] Re: Spread Spectrum R&O released WT 97-12 Date: Tue, 7 Sep 1999 14:15:50 -0400 MIME-Version: 1.0 Content-Type: text/plain; charset="iso-8859-1" List-Unsubscribe: List-Software: Lyris Server version 3.0 List-Subscribe: List-Owner: X-List-Host: Tucson Amateur Packet Radio Reply-To: "TAPR Spread Spectrum Special Interest Group" X-Message-Id: <8060D04206ABD2118C6800805FC743CC97A399@mail.arrl.org> Sender: bounce-ss-6751@lists.tapr.org Precedence: bulk > From: Greg Jones [mailto:wd5ivd@tapr.org] > We will be filing a petition for reconsideration. Just part > of the game, but I wouldn't expect we will see anything changed. > Does anyone know if an amateur petition for reconsideration > has ever been > moved on ? Hi, Greg, ARRL was mostly successful in its Petition for Reconsideration wrt the RF exposure rules. A big part of what we offered was to demonstrate the difficulties hams would have meeting the rules as first proposed, offered a reasonable justification for specific changes and offered specific suggestions as to what the changes should be. When all was said and done, the rules still met the original requirements, but were done so in a way that has minimal impact on the Amateur Radio Service. 73 from ARRL HQ, Ed Hare, W1RFI ARRL Lab 225 Main St Newington, CT 06111 860-594-0318 w1rfi@arrl.org -------------------------------------------------------------------- Visit the ARRL Website at http://www.arrl.org/. Check out the ARRL members-only website at http://www.arrl.org/members/. Have your ARRL membership number (from your QST mailing label) available the first time you check in. For answers to many technical questions, consult the ARRL Technical Information Service page on the ARRL Web site at http://www.arrl.org/tis. -------------------------------------------------------------------- --- You are currently subscribed to ss as: lyris.ss@tapr.org To unsubscribe send a blank email to leave-ss-6751T@lists.tapr.org From bounce-ss-6751@lists.tapr.org Tue Sep 7 16:03:30 1999 Received: from lists.tapr.org (lists.tapr.org [204.17.217.24]) by tapr.org (8.9.3/8.9.3/1.10) with SMTP id QAA18167 for ; Tue, 7 Sep 1999 16:03:29 -0500 (CDT) Mime-Version: 1.0 X-Sender: dewayne@mail.warpspeed.com Message-Id: Date: Tue, 7 Sep 1999 13:58:25 -0700 To: "TAPR Spread Spectrum Special Interest Group" From: Dewayne Hendricks Subject: [ss] Re: Spread Spectrum R&O released WT 97-12 Content-Type: multipart/alternative; boundary="============_-1275384520==_ma============" List-Unsubscribe: List-Software: Lyris Server version 3.0 List-Subscribe: List-Owner: X-List-Host: Tucson Amateur Packet Radio Reply-To: "TAPR Spread Spectrum Special Interest Group" X-Message-Id: Sender: bounce-ss-6751@lists.tapr.org Precedence: bulk --============_-1275384520==_ma============ Content-Type: text/plain; charset="us-ascii" ; format="flowed" At 07:08 -0700 9/7/99, Jake Brodsky wrote: >Could someone post a URL to the FCC's web site with the R&O text? -- Dewayne --============_-1275384520==_ma============ Content-Type: text/enriched; charset="us-ascii" Content-Transfer-Encoding: quoted-printable At 07:08 -0700 9/7/99, Jake Brodsky wrote: Could someone post a URL to the FCC's web site with the R&O text?=20 <<Timeshttp://www.fcc.gov/Bureau= s/Wireless/Orders/1999/fcc99234.wp > -- Dewayne --============_-1275384520==_ma============-- --- You are currently subscribed to ss as: lyris.ss@tapr.org To unsubscribe send a blank email to leave-ss-6751T@lists.tapr.org From bounce-ss-6751@lists.tapr.org Fri Sep 10 13:40:15 1999 Received: from lists.tapr.org (lists.tapr.org [204.17.217.24]) by tapr.org (8.9.3/8.9.3/1.10) with SMTP id NAA24866 for ; Fri, 10 Sep 1999 13:40:15 -0500 (CDT) Message-ID: From: Paul Brownlee To: "TAPR Spread Spectrum Special Interest Group" Subject: [ss] RE:Base Sttion Controllers...Coded Communications...Applications Engineers Date: Fri, 10 Sep 1999 11:36:24 -0700 MIME-Version: 1.0 Content-Type: text/plain List-Unsubscribe: List-Software: Lyris Server version 3.0 List-Subscribe: List-Owner: X-List-Host: Tucson Amateur Packet Radio Reply-To: "TAPR Spread Spectrum Special Interest Group" X-Message-Id: Sender: bounce-ss-6751@lists.tapr.org Precedence: bulk To All: Help! I am trying to get some information on a Base Station Controller we are using from Coded Communications(now defunct). Maybe some of the San Diego crowd can help? This BSC is circa 1992 for Mobile Data Terminals and Telemetry, it uses NFBP on FM baseband of 800MHz radio with BPSK, GMSK & DSP. Currently the unit interfaces a NC5000 Network Controller for PC based message switch. We would like to modify the unit to either transmit, FAX or GIF files currently it is limited to text forms and neumonic strings. Can this structure be easily changed to allow large local packets to be received and transmitted? We are looking at 16 K-Bits in file size. You may contact me at 650-991-8287 or by email at Pbrownlee@dalycity.org . Thanks, Paul Brownlee --- You are currently subscribed to ss as: lyris.ss@tapr.org To unsubscribe send a blank email to leave-ss-6751T@lists.tapr.org From bounce-ss-6751@lists.tapr.org Mon Sep 13 11:03:59 1999 Received: from lists.tapr.org (lists.tapr.org [204.17.217.24]) by tapr.org (8.9.3/8.9.3/1.10) with SMTP id LAA19620 for ; Mon, 13 Sep 1999 11:03:58 -0500 (CDT) Date: Mon, 13 Sep 1999 10:59:25 -0500 (CDT) From: Jeremy McMillan To: "TAPR Spread Spectrum Special Interest Group" cc: TAPR Spread Spectrum Special Interest Group Subject: [ss] RE:Base Sttion Controllers...Coded Communications...Applications Engineers In-Reply-To: Message-ID: MIME-Version: 1.0 Content-Type: TEXT/PLAIN; charset=US-ASCII List-Unsubscribe: List-Software: Lyris Server version 3.0 List-Subscribe: List-Owner: X-List-Host: Tucson Amateur Packet Radio Reply-To: "TAPR Spread Spectrum Special Interest Group" X-Message-Id: Sender: bounce-ss-6751@lists.tapr.org Precedence: bulk Actually, what it looks like you need is a good session layer protocol on top of a packet layer protocol that is compatible with these things. Rather than reinventing the wheel, I suggest you have someone look at the IP stack code from the 4.4BSD unix distribution. Take what you need, and say "Some of this code is from the 4.4BSD distribution, Copyright the Reagents of Berkeley." in the boilerplate, and you can use it any way you want. Email me directly if you need an URL to the code. Otherwise, I'd reccomend learning the basics of IP addressing and packetizing along with TCP session error handling concepts (unless you already know that stuff). The reason you will probably need to do this is that digital wireless performance usually degrades drastically as packet sizes go up. If the low-level MAC protocol of your equipment is designed for tiny packets, sending 2KB (16Kb) GIFs through it will not be a graceful implementation. You need to send your GIFs in tiny chinks and reassemble them on the other end. This was written by hands far wiser than mine... On Fri, 10 Sep 1999, Paul Brownlee wrote: > To All: > Help! I am trying to get some information on a Base Station > Controller we are using from Coded Communications(now defunct). Maybe some > of the San Diego crowd can help? > This BSC is circa 1992 for Mobile Data Terminals and Telemetry, it > uses NFBP on FM baseband of 800MHz radio with BPSK, GMSK & DSP. Currently > the unit interfaces a NC5000 Network Controller for PC based message switch. > We would like to modify the unit to either transmit, FAX or GIF > files currently it is limited to text forms and neumonic strings. Can this > structure be easily changed to allow large local packets to be received and > transmitted? We are looking at 16 K-Bits in file size. > You may contact me at 650-991-8287 or by email at > Pbrownlee@dalycity.org . > > Thanks, > Paul > Brownlee > > > --- > You are currently subscribed to ss as: mcmillan@cboe.com > To unsubscribe send a blank email to leave-ss-6751T@lists.tapr.org > > --- You are currently subscribed to ss as: lyris.ss@tapr.org To unsubscribe send a blank email to leave-ss-6751T@lists.tapr.org From bounce-ss-6751@lists.tapr.org Thu Sep 16 18:31:47 1999 Received: from lists.tapr.org (lists.tapr.org [204.17.217.24]) by tapr.org (8.9.3/8.9.3/1.10) with SMTP id SAA15245 for ; Thu, 16 Sep 1999 18:31:46 -0500 (CDT) Mime-Version: 1.0 X-Sender: dewayne@mail.warpspeed.com Message-Id: Date: Thu, 16 Sep 1999 16:28:17 -0700 To: "TAPR Spread Spectrum Special Interest Group" From: Dewayne Hendricks Subject: [ss] An interesting spread spectrum patent Content-Type: text/plain; charset="us-ascii" ; format="flowed" List-Unsubscribe: List-Software: Lyris Server version 3.0 List-Subscribe: List-Owner: X-List-Host: Tucson Amateur Packet Radio Reply-To: "TAPR Spread Spectrum Special Interest Group" X-Message-Id: Sender: bounce-ss-6751@lists.tapr.org Precedence: bulk I was looking at the announcement on a local talk to be given about a new book on fuzzy logic systems written by a guy named Bart Kosko and I saw his short bio: At 14:35 -0700 9/16/99, Computer Literacy Events wrote: > Bart Kosko is a faculty member of the Department of > Electrical Engineering at the University of Southern > California. He is a renowned expert of fuzzy systems > and neural networks, as well as the patent holder of > the Adaptive Fuzzy Frequency Hopping System (a system > and method for fuzzy spread spectrum communication). I thought that I'd share this with the rest of you. The very concept of a 'fuzzy spread spectrum communication' system seemed to me to be very funny at the time. Funny in the context of my thinking about submitting a petition for rulemaking to the FCC to allow fuzzy spread spectrum communication in the amateur radio service and how I would even begin to explain it, especially after what we just went thru the past several years with the SS rulemaking that was just concluded. Then I thought about some of the possible things the opposition might say about such systems raising the fuzzy noise floor. Oh well, you can see where I'm going with this. For those of you who'd like to dig further into this novel concept, the US Patent # is 5539769 and was issued on 7/23/96. -- Dewayne WA8DZP --- You are currently subscribed to ss as: lyris.ss@tapr.org To unsubscribe send a blank email to leave-ss-6751T@lists.tapr.org From bounce-ss-6751@lists.tapr.org Thu Sep 16 20:05:27 1999 Received: from lists.tapr.org (lists.tapr.org [204.17.217.24]) by tapr.org (8.9.3/8.9.3/1.10) with SMTP id UAA17888 for ; Thu, 16 Sep 1999 20:05:26 -0500 (CDT) Message-Id: X-Sender: brett@localhost Date: Thu, 16 Sep 1999 18:56:12 -0600 To: "TAPR Spread Spectrum Special Interest Group" From: Brett Glass Subject: [ss] Re: An interesting spread spectrum patent In-Reply-To: Mime-Version: 1.0 Content-Type: text/plain; charset="us-ascii" List-Unsubscribe: List-Software: Lyris Server version 3.0 List-Subscribe: List-Owner: X-List-Host: Tucson Amateur Packet Radio Reply-To: "TAPR Spread Spectrum Special Interest Group" X-Message-Id: <4.2.0.58.19990916185529.00abadf0@localhost> Sender: bounce-ss-6751@lists.tapr.org Precedence: bulk At 04:28 PM 9/16/99 -0700, Dewayne Hendricks wrote: >I thought that I'd share this with the rest of you. The very concept of a 'fuzzy spread spectrum communication' system seemed to me to be very funny at the time. Next there'll be "squishy spread spectrum" and "soggy spread spectrum." ;-) --Brett Glass --- You are currently subscribed to ss as: lyris.ss@tapr.org To unsubscribe send a blank email to leave-ss-6751T@lists.tapr.org From bounce-ss-6751@lists.tapr.org Fri Sep 17 09:24:21 1999 Received: from lists.tapr.org (lists.tapr.org [204.17.217.24]) by tapr.org (8.9.3/8.9.3/1.10) with SMTP id JAA25548 for ; Fri, 17 Sep 1999 09:24:20 -0500 (CDT) Message-Id: Date: Fri, 17 Sep 1999 10:24:14 -0400 Sender: bounce-ss-6751@lists.tapr.org From: Dennis Silage To: "TAPR Spread Spectrum Special Interest Group" X-EXP32-SerialNo: 00002713 Subject: [ss] Fuzzy Spread Spectrum Mime-Version: 1.0 Content-Type: text/plain; charset="US-ASCII" Content-Transfer-Encoding: 7bit List-Unsubscribe: List-Software: Lyris Server version 3.0 List-Subscribe: List-Owner: X-List-Host: Tucson Amateur Packet Radio Reply-To: "TAPR Spread Spectrum Special Interest Group" X-Message-Id: <199909171420.KAA09140@typhoon.ocis.temple.edu> Precedence: bulk Fuzzy spread spectrum by Bart Kosko may not be as fuzzy as its sounds. Check out his book: Neural Networks for Signal Processing, Prentice Hall, 1992 for a (somewhat) outdated introduction to the whole area. DSP may never remain as we know it now, what has stayed the same beside our analog modulation techniques? Dennis Silage K3DS ECE Temple University silage@vm.temple.edu --- You are currently subscribed to ss as: lyris.ss@tapr.org To unsubscribe send a blank email to leave-ss-6751T@lists.tapr.org From bounce-ss-6751@lists.tapr.org Fri Sep 17 09:50:32 1999 Received: from lists.tapr.org (lists.tapr.org [204.17.217.24]) by tapr.org (8.9.3/8.9.3/1.10) with SMTP id JAA26295 for ; Fri, 17 Sep 1999 09:50:32 -0500 (CDT) Message-ID: From: "Orkun Zorba" To: "TAPR Spread Spectrum Special Interest Group" Subject: [ss] WaveLAN Date: Fri, 17 Sep 1999 17:51:50 +0300 MIME-Version: 1.0 Content-Type: text/plain; charset="iso-8859-9" Content-Transfer-Encoding: 7bit X-Priority: 3 X-MSMail-Priority: Normal X-MimeOLE: Produced By Microsoft MimeOLE V4.72.2106.4 List-Unsubscribe: List-Software: Lyris Server version 3.0 List-Subscribe: List-Owner: X-List-Host: Tucson Amateur Packet Radio Reply-To: "TAPR Spread Spectrum Special Interest Group" X-Message-Id: <004901bf011c$32812620$31ad8ec3@Bigboy49.AYESAS.COM> Sender: bounce-ss-6751@lists.tapr.org Precedence: bulk >Hi! >Is there anybody used or know something about >WaveLAN cards? >I need a card that I can use in a notebook and >performs at least 2 Mbps communication without >an external antenna. >There are lots of different information and contact >names in WaveLAN's web site but I haven't reach the >correct ones yet. >Looking forward related persons. >Regards, >Orkun > --- You are currently subscribed to ss as: lyris.ss@tapr.org To unsubscribe send a blank email to leave-ss-6751T@lists.tapr.org From bounce-ss-6751@lists.tapr.org Fri Sep 17 10:06:05 1999 Received: from lists.tapr.org (lists.tapr.org [204.17.217.24]) by tapr.org (8.9.3/8.9.3/1.10) with SMTP id KAA27052 for ; Fri, 17 Sep 1999 10:06:04 -0500 (CDT) Message-ID: From: "Sam Guccione" To: "TAPR Spread Spectrum Special Interest Group" Subject: [ss] Re: An interesting spread spectrum patent Date: Fri, 17 Sep 1999 11:03:19 -0400 MIME-Version: 1.0 Content-Type: text/plain; charset="iso-8859-1" Content-Transfer-Encoding: 7bit Content-Transfer-Encoding: 7bit X-Priority: 3 X-MSMail-Priority: Normal X-MimeOLE: Produced By Microsoft MimeOLE V4.72.2106.4 List-Unsubscribe: List-Software: Lyris Server version 3.0 List-Subscribe: List-Owner: X-List-Host: Tucson Amateur Packet Radio Reply-To: "TAPR Spread Spectrum Special Interest Group" X-Message-Id: <005101bf011d$c71e6300$18807b8a@ht-s103-01.dtcc.edu> Sender: bounce-ss-6751@lists.tapr.org Precedence: bulk Bart has a great book on Fuzzy Logic. Very readable. I recommend it. Dr. Sam Guccione Delaware Technical & Community College Chair Engineering Terry Campus Technologies/Physics 1832 North duPont Highway 302-741-2802 Dover, DE 19901 ARS K3BY 302-741-2837 Fax Delaware Rockets For Schools Payload Page http://www.dtel.terry.dtcc.edu -----Original Message----- From: Dewayne Hendricks To: TAPR Spread Spectrum Special Interest Group Date: Thursday, September 16, 1999 7:31 PM Subject: [ss] An interesting spread spectrum patent > > I was looking at the announcement on a local talk to be given >about a new book on fuzzy logic systems written by a guy named Bart >Kosko and I saw his short bio: > >At 14:35 -0700 9/16/99, Computer Literacy Events wrote: >> Bart Kosko is a faculty member of the Department of >> Electrical Engineering at the University of Southern >> California. He is a renowned expert of fuzzy systems >> and neural networks, as well as the patent holder of >> the Adaptive Fuzzy Frequency Hopping System (a system >> and method for fuzzy spread spectrum communication). > >I thought that I'd share this with the rest of you. The very concept >of a 'fuzzy spread spectrum communication' system seemed to me to be >very funny at the time. Funny in the context of my thinking about >submitting a petition for rulemaking to the FCC to allow fuzzy spread >spectrum communication in the amateur radio service and how I would >even begin to explain it, especially after what we just went thru the >past several years with the SS rulemaking that was just concluded. >Then I thought about some of the possible things the opposition might >say about such systems raising the fuzzy noise floor. Oh well, you >can see where I'm going with this. > For those of you who'd like to dig further into this novel >concept, the US Patent # is 5539769 and was issued on 7/23/96. > >-- Dewayne WA8DZP > > >--- >You are currently subscribed to ss as: SGUCCION@OUTLAND.DTCC.EDU >To unsubscribe send a blank email to leave-ss-6751T@lists.tapr.org > --- You are currently subscribed to ss as: lyris.ss@tapr.org To unsubscribe send a blank email to leave-ss-6751T@lists.tapr.org From bounce-ss-6751@lists.tapr.org Fri Sep 17 12:56:59 1999 Received: from lists.tapr.org (lists.tapr.org [204.17.217.24]) by tapr.org (8.9.3/8.9.3/1.10) with SMTP id MAA01768 for ; Fri, 17 Sep 1999 12:56:59 -0500 (CDT) Mime-Version: 1.0 X-Sender: dewayne@mail.warpspeed.com Message-Id: Date: Fri, 17 Sep 1999 10:54:03 -0700 To: "TAPR Spread Spectrum Special Interest Group" From: Dewayne Hendricks Subject: [ss] UWB Conference Announcement Content-Type: text/plain; charset="us-ascii" ; format="flowed" List-Unsubscribe: List-Software: Lyris Server version 3.0 List-Subscribe: List-Owner: X-List-Host: Tucson Amateur Packet Radio Reply-To: "TAPR Spread Spectrum Special Interest Group" X-Message-Id: Sender: bounce-ss-6751@lists.tapr.org Precedence: bulk [Note: I thought that the list would like to see the press release that went out today on this conference. Take note that Commissioner Ness will be doing a keynote! Dewayne WA8DZP] Next Frontier of Wireless Technology to Debut at Washington Conference Sept. 28-30 Contact: Steve Duchesne, 202-739-0245, for Ultra Wideband; Web site: http://www.uwb.org WASHINGTON, Sept. 17 /U.S. Newswire/ -- U.S. leaders in the high technology field will gather in Washington later this month to introduce the next wave of wireless technology that could one day revolutionize the way private industries, public safety organizations, the military and consumers transmit and receive data, audio and video images. The new technology known as Ultra Wideband (UWB) represents a breakthrough in wireless communication, radar and positioning. As USA Today reported earlier this year, "If the technology lives up to its promise, it would be like the leap from vacuum tubes to the transistor or from oil lamps to light bulbs, touching every home and workplace." The power of UWB positioning and radar to precisely measure distance and movement has myriad applications in public safety, medical telemetry, asset protection, engineering and construction. It can, for example, display the positions of individuals inside a building or within the rubble of a structure demolished by a natural disaster, establish a security "bubble" around one's home or car, detect landmines and enhance aviation safety. This innovative technology will be the focus of the first International UWB Conference to be held from Sept. 28 through Sept. 30 at the Crowne Plaza Hotel and Sphinx Club in Washington. The conference is sponsored by the UWB Working Group, which represents a coalition of parties that are pioneering the technology. Researchers from more than a dozen nations and senior U.S. government officials will join the UWB Working Group in the event that will include presentations, panel discussions and demonstrations of the groundbreaking technology. Federal Communications Commissioner Susan Ness will be the featured speaker on Wednesday, Sept. 29. In addition to Commissioner Ness, speakers at the three-day event will include Lauren "Pete" Belvin, Counsel to the Senate Commerce Committee communications subcommittee; Ed Hearst, Majority Counsel to the House Commerce Committee; FCC Chief of Engineering and Technology Dale Hatfield, FCC Chief Technologist Stagg Newman; and Charles Pluckhahn, Vice President for Telecommunications of Stephens Inc. Conference presenters will review UWB commercial markets, radio spectrum policy, signal modeling, electronics design, and future directions. Researchers from Canada, Denmark, Germany, Iran, Italy, Japan, Netherlands, New Zealand, Russia, Spain, and the United Kingdom will join U.S. corporate, academic and national security representatives, as well as federal regulators and congressional leaders in exploring issues facing UWB deployment. The conference theme, "Breaking the Wave," symbolizes UWB as a departure from the traditional means of transmission through radio waves. Instead of radio sine waves, most UWB devices emit extremely short pulses, which create a broadband spectrum, at remarkably low energy levels. For the consumer, wireless phones and Internet appliances based on UWB will offer high capacity, high data rates, ultra-secure communication, low cost and extremely low power consumption, without interfering with conventional uses of the airwaves. In the words of The New York Times, UWB is a "...communications technology that has the potential to make vastly more efficient use of the increasingly precious radio spectrum." The conference will also include an open Working Group business meeting, UWB equipment demonstrations and exhibits, and a reception on the evening of Sept. 29 at the Information Age and Science Exhibits, National Museum of American History. The UWB Working Group is made up of 50 organizations and entrepreneurs devoted to the development and advancement of ultra wideband technology. Some of the group includes Aether Wire & Location Inc.; T.N. Cokenias Consulting; Dandin Group; Honeywell Technology Center; Interval Research Corp.; Pulson Medical Inc.; Sensors & Sofware Inc.; Time Domain Corporation; TRW, Incorporated; Tucson Amatuer Packet Radio; the University of Southern California; Xtreme Spectrum, Inc.; Zircon Corporation. For more information or to register for the conference, visit the UWB Working Group website at www.uwb.org or contact conference coordinator Anne Teillet (anne.teillet@tdsi.com) or Tanya Diamond (tanya.diamond@dsi.com) at 256-922-9229. For information on UWB technology, contact Rachel Reinhardt (rachel.reinhardt@tdsi.com) at 256-922-9229. -0- --- You are currently subscribed to ss as: lyris.ss@tapr.org To unsubscribe send a blank email to leave-ss-6751T@lists.tapr.org From bounce-ss-6751@lists.tapr.org Sat Sep 18 11:06:14 1999 Received: from lists.tapr.org (lists.tapr.org [204.17.217.24]) by tapr.org (8.9.3/8.9.3/1.10) with SMTP id LAA19717 for ; Sat, 18 Sep 1999 11:06:13 -0500 (CDT) Message-Id: X-Sender: rwmcgwier@mail.ewndsr1.nj.home.com Date: Sat, 18 Sep 1999 12:04:28 -0400 To: "TAPR Spread Spectrum Special Interest Group" From: Robert McGwier Subject: [ss] Re: An interesting spread spectrum patent In-Reply-To: Mime-Version: 1.0 Content-Type: text/plain; charset="us-ascii" List-Unsubscribe: List-Software: Lyris Server version 3.0 List-Subscribe: List-Owner: X-List-Host: Tucson Amateur Packet Radio Reply-To: "TAPR Spread Spectrum Special Interest Group" X-Message-Id: <4.1.19990918120350.00936d70@mail.ewndsr1.nj.home.com> Sender: bounce-ss-6751@lists.tapr.org Precedence: bulk What is name of the book, the publisher, better yet: the ISBN? Thanks Bob At 11:03 AM 09/17/1999 -0400, you wrote: >Bart has a great book on Fuzzy Logic. Very readable. I recommend it. > > > >Dr. Sam Guccione Delaware Technical & Community College >Chair Engineering Terry Campus >Technologies/Physics 1832 North duPont Highway >302-741-2802 Dover, DE 19901 >ARS K3BY 302-741-2837 Fax > > Delaware Rockets For Schools Payload Page > http://www.dtel.terry.dtcc.edu > --- You are currently subscribed to ss as: lyris.ss@tapr.org To unsubscribe send a blank email to leave-ss-6751T@lists.tapr.org From bounce-ss-6751@lists.tapr.org Sat Sep 18 13:44:23 1999 Received: from lists.tapr.org (lists.tapr.org [204.17.217.24]) by tapr.org (8.9.3/8.9.3/1.10) with SMTP id NAA23750 for ; Sat, 18 Sep 1999 13:44:23 -0500 (CDT) Message-ID: Date: Sat, 18 Sep 1999 14:42:38 -0400 From: Jeff King Organization: Aero Data Systems, Inc. X-Accept-Language: en MIME-Version: 1.0 To: "TAPR Spread Spectrum Special Interest Group" Subject: [ss] Re: An interesting spread spectrum patent References: Content-Type: text/plain; charset=us-ascii Content-Transfer-Encoding: 7bit List-Unsubscribe: List-Software: Lyris Server version 3.0 List-Subscribe: List-Owner: X-List-Host: Tucson Amateur Packet Radio Reply-To: "TAPR Spread Spectrum Special Interest Group" X-Message-Id: <37E3DD1E.2200D8E1@aerodata.net> Sender: bounce-ss-6751@lists.tapr.org Precedence: bulk Fuzzy Thinking "The new Science of Fuzzy Logic" Author: Bart Kosko Copyright 1993 ISBN 0-7868-8021-X I don't know, I didn't like it as much as Sam. Seemed like Kosko kept going over the same thing. I guess it depends what your end goal is (I was trying to develop a fuzzy logic based EATC system at the time). -Jeff Robert McGwier wrote: > What is name of the book, the publisher, better yet: the ISBN? > > Thanks > Bob > > At 11:03 AM 09/17/1999 -0400, you wrote: > >Bart has a great book on Fuzzy Logic. Very readable. I recommend it. > > > > > > > >Dr. Sam Guccione Delaware Technical & Community College > >Chair Engineering Terry Campus > >Technologies/Physics 1832 North duPont Highway > >302-741-2802 Dover, DE 19901 > >ARS K3BY 302-741-2837 Fax > > > > Delaware Rockets For Schools Payload Page > > http://www.dtel.terry.dtcc.edu > > > > --- > You are currently subscribed to ss as: jeff@aerodata.net > To unsubscribe send a blank email to leave-ss-6751T@lists.tapr.org --- You are currently subscribed to ss as: lyris.ss@tapr.org To unsubscribe send a blank email to leave-ss-6751T@lists.tapr.org From bounce-ss-6751@lists.tapr.org Sat Sep 18 14:55:30 1999 Received: from lists.tapr.org (lists.tapr.org [204.17.217.24]) by tapr.org (8.9.3/8.9.3/1.10) with SMTP id OAA25894 for ; Sat, 18 Sep 1999 14:55:25 -0500 (CDT) Mime-Version: 1.0 Content-Type: text/plain; charset="us-ascii" Message-Id: Date: Sat, 18 Sep 1999 14:40:46 -0500 To: "TAPR Spread Spectrum Special Interest Group" From: Greg Jones Subject: [ss] DCC this coming Weekend in Phoenix List-Unsubscribe: List-Software: Lyris Server version 3.0 List-Subscribe: List-Owner: X-List-Host: Tucson Amateur Packet Radio Reply-To: "TAPR Spread Spectrum Special Interest Group" X-Message-Id: Sender: bounce-ss-6751@lists.tapr.org Precedence: bulk Don't forget that the 1999 ARRL and TAPR Digital Communications Conference is being held this next week Sept 24-26 in Phoenix, AZ. For more details visit: http://www.tapr.org/dcc The tentative schedule and proceedings abstracts are now available on the conference page. Look forward to seeing you at this year's DCC. Cheers - Greg Jones, WD5IVD ----- Greg Jones, WD5IVD President TAPR (http://www.tapr.org) PhD Candidate, Instructional Technology, UT Austin email: wd5ivd@tapr.org web: http://www.tapr.org/~wd5ivd Experience is what you get when you were expecting something else. --- You are currently subscribed to ss as: lyris.ss@tapr.org To unsubscribe send a blank email to leave-ss-6751T@lists.tapr.org From bounce-ss-6751@lists.tapr.org Sat Sep 18 17:00:34 1999 Received: from lists.tapr.org (lists.tapr.org [204.17.217.24]) by tapr.org (8.9.3/8.9.3/1.10) with SMTP id RAA29707 for ; Sat, 18 Sep 1999 17:00:34 -0500 (CDT) Date: Sat, 18 Sep 1999 17:57:01 -0400 (EDT) From: Dr Samuel Guccione X-Sender: sguccion@outland To: "TAPR Spread Spectrum Special Interest Group" Subject: [ss] Re: An interesting spread spectrum patent In-Reply-To: Message-ID: MIME-Version: 1.0 Content-Type: TEXT/PLAIN; charset=US-ASCII List-Unsubscribe: List-Software: Lyris Server version 3.0 List-Subscribe: List-Owner: X-List-Host: Tucson Amateur Packet Radio Reply-To: "TAPR Spread Spectrum Special Interest Group" X-Message-Id: Sender: bounce-ss-6751@lists.tapr.org Precedence: bulk This gives his overview of Fuzzy Logic with his personal bias. Not useable to create fuzzy logic systems, etc. Not an engineering book. Sam On Sat, 18 Sep 1999, Jeff King wrote: > Fuzzy Thinking "The new Science of Fuzzy Logic" > Author: Bart Kosko > Copyright 1993 > ISBN 0-7868-8021-X > > I don't know, I didn't like it as much as Sam. Seemed like Kosko kept > going over the same thing. I guess it depends what your end goal is > (I was trying to develop a fuzzy logic based EATC system at the > time). > > -Jeff > > Robert McGwier wrote: > > > What is name of the book, the publisher, better yet: the ISBN? > > > > Thanks > > Bob > > > > At 11:03 AM 09/17/1999 -0400, you wrote: > > >Bart has a great book on Fuzzy Logic. Very readable. I recommend it. > > > > > > > > > > > >Dr. Sam Guccione Delaware Technical & Community College > > >Chair Engineering Terry Campus > > >Technologies/Physics 1832 North duPont Highway > > >302-741-2802 Dover, DE 19901 > > >ARS K3BY 302-741-2837 Fax > > > > > > Delaware Rockets For Schools Payload Page > > > http://www.dtel.terry.dtcc.edu > > > > > > > --- > > You are currently subscribed to ss as: jeff@aerodata.net > > To unsubscribe send a blank email to leave-ss-6751T@lists.tapr.org > > > --- > You are currently subscribed to ss as: SGUCCION@OUTLAND.DTCC.EDU > To unsubscribe send a blank email to leave-ss-6751T@lists.tapr.org > > *************************************************************** Dr. Sam Guccione Delaware Technical & Community College Chair Engineering Terry Campus Technologies/Physics 1832 North duPont Highway 302-741-2802 Dover, DE 19901 ARS K3BY 302-741-2837 Fax *************************************************************** Delaware Rockets For Schools Payload Home Page http://www.dtel.terry.dtcc.edu/~rocket *************************************************************** --- You are currently subscribed to ss as: lyris.ss@tapr.org To unsubscribe send a blank email to leave-ss-6751T@lists.tapr.org From bounce-ss-6751@lists.tapr.org Sun Sep 19 01:28:41 1999 Received: from lists.tapr.org (lists.tapr.org [204.17.217.24]) by tapr.org (8.9.3/8.9.3/1.10) with SMTP id BAA19773 for ; Sun, 19 Sep 1999 01:28:40 -0500 (CDT) Message-Id: X-Sender: rwmcgwier@mail.ewndsr1.nj.home.com Date: Sun, 19 Sep 1999 02:24:18 -0400 To: "TAPR Spread Spectrum Special Interest Group" From: Robert McGwier Subject: [ss] Re: DCC this coming Weekend in Phoenix In-Reply-To: Mime-Version: 1.0 Content-Type: text/plain; charset="us-ascii" List-Unsubscribe: List-Software: Lyris Server version 3.0 List-Subscribe: List-Owner: X-List-Host: Tucson Amateur Packet Radio Reply-To: "TAPR Spread Spectrum Special Interest Group" X-Message-Id: <4.1.19990919022217.0091e630@mail.ewndsr1.nj.home.com> Sender: bounce-ss-6751@lists.tapr.org Precedence: bulk Greg: I received my confirmation from Dot today that all has been paid. The left hand doesn't know what the right hand is doing? ;-)!! My only disappointment is that all of the pending approvals for release have not been signed at work. They are inspecting every claim of "public source" with a fine tooth comb. It will probably take two more months. ;-( Bob At 02:40 PM 09/18/1999 -0500, you wrote: >Don't forget that the 1999 ARRL and TAPR Digital Communications Conference >is being held this next week Sept 24-26 in Phoenix, AZ. > >For more details visit: http://www.tapr.org/dcc > >The tentative schedule and proceedings abstracts are now available on the >conference page. > >Look forward to seeing you at this year's DCC. > >Cheers - Greg Jones, WD5IVD > > >----- >Greg Jones, WD5IVD > President TAPR (http://www.tapr.org) > PhD Candidate, Instructional Technology, UT Austin > >email: wd5ivd@tapr.org >web: http://www.tapr.org/~wd5ivd > > >Experience is what you get when you were expecting something else. > >--- >You are currently subscribed to ss as: RWMCGWIER@HOME.COM >To unsubscribe send a blank email to leave-ss-6751T@lists.tapr.org --- You are currently subscribed to ss as: lyris.ss@tapr.org To unsubscribe send a blank email to leave-ss-6751T@lists.tapr.org From bounce-ss-6751@lists.tapr.org Tue Sep 21 23:27:36 1999 Received: from lists.tapr.org (lists.tapr.org [204.17.217.24]) by tapr.org (8.9.3/8.9.3/1.10) with SMTP id XAA28562 for ; Tue, 21 Sep 1999 23:27:35 -0500 (CDT) Message-ID: X-Originating-IP: [200.28.170.176] From: "Nicolás Alejandro Contreras Crenovich" To: "TAPR Spread Spectrum Special Interest Group" Cc: ss@lists.tapr.org Subject: [ss] Re: WaveLAN Date: Wed, 22 Sep 1999 04:18:44 GMT Mime-Version: 1.0 Content-Type: text/plain; format=flowed List-Unsubscribe: List-Software: Lyris Server version 3.0 List-Subscribe: List-Owner: X-List-Host: Tucson Amateur Packet Radio Reply-To: "TAPR Spread Spectrum Special Interest Group" X-Message-Id: <19990922041845.64836.qmail@hotmail.com> Sender: bounce-ss-6751@lists.tapr.org Precedence: bulk Hi: Maybe MegahHertz could be an alternative, they have some card, called "redio-modem", I hope it help you, anyway Good Luck!! >From: "Orkun Zorba" >Reply-To: "TAPR Spread Spectrum Special Interest Group" >To: "TAPR Spread Spectrum Special Interest Group" >Subject: [ss] WaveLAN >Date: Fri, 17 Sep 1999 17:51:50 +0300 > > >Hi! > >Is there anybody used or know something about > >WaveLAN cards? > >I need a card that I can use in a notebook and > >performs at least 2 Mbps communication without > >an external antenna. > >There are lots of different information and contact > >names in WaveLAN's web site but I haven't reach the > >correct ones yet. > >Looking forward related persons. > >Regards, > >Orkun > > > > >--- >You are currently subscribed to ss as: crenovich@hotmail.com >To unsubscribe send a blank email to leave-ss-6751T@lists.tapr.org > ______________________________________________________ Get Your Private, Free Email at http://www.hotmail.com --- You are currently subscribed to ss as: lyris.ss@tapr.org To unsubscribe send a blank email to leave-ss-6751T@lists.tapr.org From bounce-ss-6751@lists.tapr.org Wed Sep 22 09:44:07 1999 Received: from lists.tapr.org (lists.tapr.org [204.17.217.24]) by tapr.org (8.9.3/8.9.3/1.10) with SMTP id JAA28810 for ; Wed, 22 Sep 1999 09:44:06 -0500 (CDT) From: "Kenneth H. Sinclair" To: "TAPR Spread Spectrum Special Interest Group" Subject: [ss] Frequency accuracy Date: Wed, 22 Sep 1999 10:40:05 -0400 Message-ID: MIME-Version: 1.0 Content-Type: text/plain; charset="iso-8859-1" Content-Transfer-Encoding: 7bit X-Priority: 3 (Normal) X-MSMail-Priority: Normal X-MimeOLE: Produced By Microsoft MimeOLE V5.00.2615.200 Importance: Normal List-Unsubscribe: List-Software: Lyris Server version 3.0 List-Subscribe: List-Owner: X-List-Host: Tucson Amateur Packet Radio Reply-To: "TAPR Spread Spectrum Special Interest Group" X-Message-Id: Sender: bounce-ss-6751@lists.tapr.org Precedence: bulk Can someone answer a novice engineering question for me? How do low-cost devices like pagers meet tight specifications for frequency accuracy? I believe most of the narrowband messaging standards (Flex, Reflex, Mobitex...) require transmit frequency accuracy within 1ppm. But crystal accuracy is 20-50ppm and even TCXOs are 2-5ppm. So what reference is used in these devices? Do they lock to a received carrier? Even in half-duplex standards? Thanks, in advance. --- You are currently subscribed to ss as: lyris.ss@tapr.org To unsubscribe send a blank email to leave-ss-6751T@lists.tapr.org From bounce-ss-6751@lists.tapr.org Wed Sep 22 09:59:34 1999 Received: from lists.tapr.org (lists.tapr.org [204.17.217.24]) by tapr.org (8.9.3/8.9.3/1.10) with SMTP id JAA29303 for ; Wed, 22 Sep 1999 09:59:33 -0500 (CDT) Message-ID: X-Originating-IP: [192.156.8.34] From: "Classified **********" To: "TAPR Spread Spectrum Special Interest Group" Subject: [ss] Re: Frequency accuracy Date: Wed, 22 Sep 1999 14:57:50 GMT Mime-Version: 1.0 Content-Type: text/plain; format=flowed List-Unsubscribe: List-Software: Lyris Server version 3.0 List-Subscribe: List-Owner: X-List-Host: Tucson Amateur Packet Radio Reply-To: "TAPR Spread Spectrum Special Interest Group" X-Message-Id: <19990922145751.96540.qmail@hotmail.com> Sender: bounce-ss-6751@lists.tapr.org Precedence: bulk Ken, They don't. Listen to some of the repeaters on the bands. You'll hear it over and over again, "those #$%* PAGERS"!!! A fellow ham and broadcast engineer had to go to the Nth degree to prove to a pager company that their system was causing interference. Finally with paper work in hand he showed them how spurious their system was. Rick P.S. The pager system in questions "JUST" barely meets FCC regs now. >From: "Kenneth H. Sinclair" >Reply-To: "TAPR Spread Spectrum Special Interest Group" >To: "TAPR Spread Spectrum Special Interest Group" >Subject: [ss] Frequency accuracy >Date: Wed, 22 Sep 1999 10:40:05 -0400 >MIME-Version: 1.0 >From bounce-ss-10818@lists.tapr.org Wed Sep 22 07:44:34 1999 >Received: from [204.17.217.24] by hotmail.com (2.1) with ESMTP id >MHotMailB9B23651006BD820F398CC11D91809DA0; Wed Sep 22 07:44:34 1999 >Return-Path: >Message-ID: > >X-Priority: 3 (Normal) >X-MSMail-Priority: Normal >X-MimeOLE: Produced By Microsoft MimeOLE V5.00.2615.200 >Importance: Normal >List-Unsubscribe: >List-Software: Lyris Server version 3.0 >List-Subscribe: >List-Owner: >X-List-Host: Tucson Amateur Packet Radio >X-Message-Id: >Sender: bounce-ss-10818@lists.tapr.org >Precedence: bulk > >Can someone answer a novice engineering question for me? How do low-cost >devices like pagers meet tight specifications for frequency accuracy? > >I believe most of the narrowband messaging standards (Flex, Reflex, >Mobitex...) >require transmit frequency accuracy within 1ppm. But crystal accuracy is >20-50ppm and even TCXOs are 2-5ppm. So what reference is used in these >devices? Do they lock to a received carrier? Even in half-duplex >standards? > >Thanks, in advance. > > >--- >You are currently subscribed to ss as: rjw_4@hotmail.com >To unsubscribe send a blank email to leave-ss-6751T@lists.tapr.org > ______________________________________________________ Get Your Private, Free Email at http://www.hotmail.com --- You are currently subscribed to ss as: lyris.ss@tapr.org To unsubscribe send a blank email to leave-ss-6751T@lists.tapr.org From bounce-ss-6751@lists.tapr.org Wed Sep 22 11:46:25 1999 Received: from lists.tapr.org (lists.tapr.org [204.17.217.24]) by tapr.org (8.9.3/8.9.3/1.10) with SMTP id LAA02923 for ; Wed, 22 Sep 1999 11:46:24 -0500 (CDT) Message-ID: From: "Kent's BGA Account" To: "TAPR Spread Spectrum Special Interest Group" References: Subject: [ss] Re: WaveLAN Date: Wed, 22 Sep 1999 11:44:05 -0500 MIME-Version: 1.0 Content-Type: text/plain; charset="iso-8859-1" Content-Transfer-Encoding: 8bit X-Priority: 3 X-MSMail-Priority: Normal X-MimeOLE: Produced By Microsoft MimeOLE V5.00.2314.1300 List-Unsubscribe: List-Software: Lyris Server version 3.0 List-Subscribe: List-Owner: X-List-Host: Tucson Amateur Packet Radio Reply-To: "TAPR Spread Spectrum Special Interest Group" X-Message-Id: <003501bf0519$aed243c0$021602c7@kfarnsworth> Sender: bounce-ss-6751@lists.tapr.org Precedence: bulk For wireless modems, I just installed one at my home/business. It's the cheapest one I've found, and it seems to work very well. It's the Webgear Aviator Pro. It is standard 2mbit 802.11, with 1mbit fallback. These are 2.4 gigahertz, 100 milliwatt hoppers. They are PCMCIA only with a very small built in flip out antenna. You can build adhoc peer to peer networks by just throwing these PCMCIA cards into notebooks, or desktop systems (with their adapter), or you can get the access point for connecting them to a wired lan, which is what I did. I have a 100mb network, through a firewall into a cable modem, with one Webgear access point on the hub in my office. A desktop 500 feet away in my home has a webgear PCMCIA card installed. I also have a notebook with a webgear PCMCIA card, so I can sit outside and work. It was a bit tricky to situate the access point and desktop that far from each other. I have only two wooden walls between the two systems, and I had to aim the antennas at each other almost perfectly for it to work well. The antennas are fairly directional. I found the PCMCIA cards through www.shopper.com for a little over $100. The access points are around $425, or so. The PCMCIA adapter for desktops is around $39. Webgear is at www.webgear.com, if you want to take a look. I have had no problems, so far. The system seems to be fairly robust. Be sure to get the latest driver software from their website if you get some of these. It allows for much less power consumption in a notebook system. I am in no way connected with Webgear. Kent ----- Original Message ----- From: Nicolás Alejandro Contreras Crenovich To: TAPR Spread Spectrum Special Interest Group Cc: Sent: Tuesday, September 21, 1999 11:18 PM Subject: [ss] Re: WaveLAN > Hi: > > Maybe MegahHertz could be an alternative, > they have some card, called "redio-modem", > I hope it help you, anyway Good Luck!! > > > >From: "Orkun Zorba" > >Reply-To: "TAPR Spread Spectrum Special Interest Group" > >To: "TAPR Spread Spectrum Special Interest Group" > >Subject: [ss] WaveLAN > >Date: Fri, 17 Sep 1999 17:51:50 +0300 > > > > >Hi! > > >Is there anybody used or know something about > > >WaveLAN cards? > > >I need a card that I can use in a notebook and > > >performs at least 2 Mbps communication without > > >an external antenna. > > >There are lots of different information and contact > > >names in WaveLAN's web site but I haven't reach the > > >correct ones yet. > > >Looking forward related persons. > > >Regards, > > >Orkun > > > > > > > > >--- > >You are currently subscribed to ss as: crenovich@hotmail.com > >To unsubscribe send a blank email to leave-ss-6751T@lists.tapr.org > > > > ______________________________________________________ > Get Your Private, Free Email at http://www.hotmail.com > > --- > You are currently subscribed to ss as: AKENT@BGA.COM > To unsubscribe send a blank email to leave-ss-6751T@lists.tapr.org > > --- You are currently subscribed to ss as: lyris.ss@tapr.org To unsubscribe send a blank email to leave-ss-6751T@lists.tapr.org From bounce-ss-6751@lists.tapr.org Wed Sep 22 12:25:09 1999 Received: from lists.tapr.org (lists.tapr.org [204.17.217.24]) by tapr.org (8.9.3/8.9.3/1.10) with SMTP id MAA04434 for ; Wed, 22 Sep 1999 12:25:08 -0500 (CDT) Message-ID: Date: Wed, 22 Sep 1999 13:22:25 -0400 From: Gordon Dey Organization: Mitel Communications Systems MIME-Version: 1.0 To: "TAPR Spread Spectrum Special Interest Group" Subject: [ss] Re: Frequency accuracy References: Content-Type: text/plain; charset=us-ascii Content-Transfer-Encoding: 7bit List-Unsubscribe: List-Software: Lyris Server version 3.0 List-Subscribe: List-Owner: X-List-Host: Tucson Amateur Packet Radio Reply-To: "TAPR Spread Spectrum Special Interest Group" X-Message-Id: <37E91051.64C@Mitel.COM> Sender: bounce-ss-6751@lists.tapr.org Precedence: bulk The stuff I worked on used direct conversion to 512-2,400 BAUD. The pager doesn't really care if the receiver is centered (although the better it is, the lower the signal strength required for a given BER rate). If the received signal is higher in frequency than the LO, its a mark. If it's lower, it's a space. The pager really doesn't care about the relationship between it's LO and the transmitters carrier frequency. Doesn't noise then look like a stream of bits? Yes, it does. A combination of software and/or hardware performs frame and bit synchronization with the bit-stream to seperate noise from carrier, and when it's recognized the 'diddle' pattern, i.e. 576 bits of alternating 1s and 0s, then pager is "locked". Why do it this way? 1. Cost 2. Power consumption 3. Patents In that order. --- You are currently subscribed to ss as: lyris.ss@tapr.org To unsubscribe send a blank email to leave-ss-6751T@lists.tapr.org From bounce-ss-6751@lists.tapr.org Wed Sep 22 13:16:54 1999 Received: from lists.tapr.org (lists.tapr.org [204.17.217.24]) by tapr.org (8.9.3/8.9.3/1.10) with SMTP id NAA05962 for ; Wed, 22 Sep 1999 13:16:53 -0500 (CDT) From: "Kenneth H. Sinclair" To: "TAPR Spread Spectrum Special Interest Group" Subject: [ss] Frequency accuracy of mobile transmitters Date: Wed, 22 Sep 1999 14:11:33 -0400 Message-ID: MIME-Version: 1.0 Content-Type: text/plain; charset="iso-8859-1" Content-Transfer-Encoding: 7bit X-Priority: 3 (Normal) X-MSMail-Priority: Normal X-MimeOLE: Produced By Microsoft MimeOLE V5.00.2615.200 Importance: Normal In-Reply-To: List-Unsubscribe: List-Software: Lyris Server version 3.0 List-Subscribe: List-Owner: X-List-Host: Tucson Amateur Packet Radio Reply-To: "TAPR Spread Spectrum Special Interest Group" X-Message-Id: Sender: bounce-ss-6751@lists.tapr.org Precedence: bulk I should have been clearer, it's the accuracy of the mobile's transmit frequency I'm curious about. As in two-way paging. Fixed transmitters can have big expensive frequency references, and mobile receivers can accomodate frequency inaccuracy, but mobile transmitters seem highly constrained and I wonder how 1ppm accuracy is achieved in those circumstances. Sent: Wednesday, September 22, 1999 1:22 PM Subject: [ss] Re: Frequency accuracy The stuff I worked on used direct conversion to 512-2,400 BAUD. The pager doesn't really care if the receiver is centered (although the better it is, the lower the signal strength required for a given BER rate). If the received signal is higher in frequency than the LO, its a mark. If it's lower, it's a space. The pager really doesn't care about the relationship between it's LO and the transmitters carrier frequency. Doesn't noise then look like a stream of bits? Yes, it does. A combination of software and/or hardware performs frame and bit synchronization with the bit-stream to seperate noise from carrier, and when it's recognized the 'diddle' pattern, i.e. 576 bits of alternating 1s and 0s, then pager is "locked". Why do it this way? 1. Cost 2. Power consumption 3. Patents In that order. --- You are currently subscribed to ss as: khs@ieee.org To unsubscribe send a blank email to leave-ss-6751T@lists.tapr.org --- You are currently subscribed to ss as: lyris.ss@tapr.org To unsubscribe send a blank email to leave-ss-6751T@lists.tapr.org From bounce-ss-6751@lists.tapr.org Wed Sep 22 14:04:03 1999 Received: from lists.tapr.org (lists.tapr.org [204.17.217.24]) by tapr.org (8.9.3/8.9.3/1.10) with SMTP id OAA07286 for ; Wed, 22 Sep 1999 14:04:03 -0500 (CDT) Message-Id: X-Sender: rschroeder@exchange.bnl.gov Date: Wed, 22 Sep 1999 15:00:22 -0400 To: "TAPR Spread Spectrum Special Interest Group" From: Ron Schroeder Subject: [ss] Re: Frequency accuracy of mobile transmitters In-Reply-To: References: Mime-Version: 1.0 Content-Type: text/plain; charset="us-ascii" List-Unsubscribe: List-Software: Lyris Server version 3.0 List-Subscribe: List-Owner: X-List-Host: Tucson Amateur Packet Radio Reply-To: "TAPR Spread Spectrum Special Interest Group" X-Message-Id: <3.0.6.32.19990922150022.00983540@exchange.bnl.gov> Sender: bounce-ss-6751@lists.tapr.org Precedence: bulk 2-5ppm is fairly easy with a TCXO smaller than a sugar cube down to 16mm x 8mm x3mm in a surface mount package. Ron At 02:11 PM 9/22/99 -0400, you wrote: >I should have been clearer, it's the accuracy of the mobile's transmit >frequency I'm curious about. As in two-way paging. Fixed transmitters >can have big expensive frequency references, and mobile receivers can >accomodate frequency inaccuracy, but mobile transmitters seem highly >constrained and I wonder how 1ppm accuracy is achieved in those >circumstances. ---------------------- Ron Schroeder rjs@bnl.gov 911A X4561 --- You are currently subscribed to ss as: lyris.ss@tapr.org To unsubscribe send a blank email to leave-ss-6751T@lists.tapr.org From bounce-ss-6751@lists.tapr.org Wed Sep 22 23:08:39 1999 Received: from lists.tapr.org (lists.tapr.org [204.17.217.24]) by tapr.org (8.9.3/8.9.3/1.10) with SMTP id XAA22991 for ; Wed, 22 Sep 1999 23:08:39 -0500 (CDT) Message-ID: From: "Bobbie S. Johnson" To: "TAPR Spread Spectrum Special Interest Group" References: Subject: [ss] Re: Frequency accuracy Date: Thu, 23 Sep 1999 00:06:49 -0400 MIME-Version: 1.0 Content-Type: text/plain; charset="iso-8859-1" Content-Transfer-Encoding: 7bit X-Priority: 3 X-MSMail-Priority: Normal X-MimeOLE: Produced By Microsoft MimeOLE V5.00.2615.200 List-Unsubscribe: List-Software: Lyris Server version 3.0 List-Subscribe: List-Owner: X-List-Host: Tucson Amateur Packet Radio Reply-To: "TAPR Spread Spectrum Special Interest Group" X-Message-Id: <001101bf0579$126bce60$b96384d8@vnet.net> Sender: bounce-ss-6751@lists.tapr.org Precedence: bulk Hi Kenneth. The tight specs apply to the transmitter only. The pager can have a very wide receiving bandwidth (which is usually the case) which causes them to receive erroneous data from other transmitters. The transmitters are allowed a bandwidth of frequencies to carry the tones for the pager message. So the actual transmitted signal is the center frequency plus/minus the accuracy percentage plus the frequency of the tones and sidebands. The transmitted frequency without modulation must be within the specified tollerance. With modulation by two or more tones, the output frequency becomes extremely complicated and usually is filtered to reduce unwanted sideband frequencies being transmitted. Bobbie ----- Original Message ----- From: Kenneth H. Sinclair To: TAPR Spread Spectrum Special Interest Group Sent: Wednesday, September 22, 1999 10:40 AM Subject: [ss] Frequency accuracy > Can someone answer a novice engineering question for me? How do low-cost > devices like pagers meet tight specifications for frequency accuracy? > > I believe most of the narrowband messaging standards (Flex, Reflex, > Mobitex...) > require transmit frequency accuracy within 1ppm. But crystal accuracy is > 20-50ppm and even TCXOs are 2-5ppm. So what reference is used in these > devices? Do they lock to a received carrier? Even in half-duplex > standards? > > Thanks, in advance. > > > --- > You are currently subscribed to ss as: BOBBIEJ@VNET.NET > To unsubscribe send a blank email to leave-ss-6751T@lists.tapr.org > --- You are currently subscribed to ss as: lyris.ss@tapr.org To unsubscribe send a blank email to leave-ss-6751T@lists.tapr.org From bounce-ss-6751@lists.tapr.org Thu Sep 23 03:04:14 1999 Received: from lists.tapr.org (lists.tapr.org [204.17.217.24]) by tapr.org (8.9.3/8.9.3/1.10) with SMTP id DAA06171 for ; Thu, 23 Sep 1999 03:04:13 -0500 (CDT) Message-ID: Reply-To: "TAPR Spread Spectrum Special Interest Group" From: "f1usa" To: "TAPR Spread Spectrum Special Interest Group" Subject: [ss] Re: Frequency accuracy Date: Thu, 23 Sep 1999 10:00:16 +0200 MIME-Version: 1.0 Content-Type: text/plain; charset="iso-8859-1" Content-Transfer-Encoding: 7bit X-Priority: 3 X-MSMail-Priority: Normal X-MimeOLE: Produced By Microsoft MimeOLE V4.72.3110.3 List-Unsubscribe: List-Software: Lyris Server version 3.0 List-Subscribe: List-Owner: X-List-Host: Tucson Amateur Packet Radio X-Message-Id: <004401bf0599$d438a340$0201a8c0@st2.astriane> Sender: bounce-ss-6751@lists.tapr.org Precedence: bulk Kenneth, >I believe most of the narrowband messaging standards (Flex, Reflex, >Mobitex...) require transmit frequency accuracy within 1ppm. I can only talk about MOBITEX. Usually, the GMSK demodulator loop use a PLL, so no specific accuracy is required (rx point of vue). 73 de F1USA, Stephane (Oleron island, France) --- You are currently subscribed to ss as: lyris.ss@tapr.org To unsubscribe send a blank email to leave-ss-6751T@lists.tapr.org From bounce-ss-6751@lists.tapr.org Thu Sep 23 09:04:59 1999 Received: from lists.tapr.org (lists.tapr.org [204.17.217.24]) by tapr.org (8.9.3/8.9.3/1.10) with SMTP id JAA23716 for ; Thu, 23 Sep 1999 09:04:59 -0500 (CDT) Date: Thu, 23 Sep 1999 08:58:09 -0600 From: Jeffrey Austen Subject: [ss] Re: Frequency accuracy X-Sender: jausten@gemini.tntech.edu To: "TAPR Spread Spectrum Special Interest Group" Message-id: MIME-version: 1.0 Content-type: text/plain; charset="us-ascii" References: List-Unsubscribe: List-Software: Lyris Server version 3.0 List-Subscribe: List-Owner: X-List-Host: Tucson Amateur Packet Radio Reply-To: "TAPR Spread Spectrum Special Interest Group" X-Message-Id: Sender: bounce-ss-6751@lists.tapr.org Precedence: bulk Very high accuracy can be achieved by using GPS or other time references. A low cost example is the TAPR Totally Accurate Clock. The high accuracy is needed because pager systems use multiple transmitters on the same frequency to provide coverage over a large area. In the region where transmitter coverage overlaps the pager will receive signals from both transmitters and these signals will interfere with each other, with the effects changing continuously as the user of the pager moves. For most systems this is a disasterous situation; almost everybody has experienced this listening to an FM station on a car radio when driving between cities. However, if the system is designed to operate in such an environment it can be made to work. In order for the receiver to be able to function in such an environment the symbol timing (bit timing, if binary) for all transmitters must be exactly synchronized so that it does not matter which transmitter the receiver is receiving at a particular instant. Due to the slow symbol rate this is not difficult to achieve and the propagation delays are of minor concern. Note that in order for this to work noncoherent (or differentially coherent) modulation needs to be used so that there is no synchronization delay in the receiver. The carrier frequency, being much higher, does not allow the same to be done because motion of the receiver and varying propagation causes essentially random phase variations between the multiple transmitters as observed at the receiver. When both signals are about the same strength the interference between transmitters will vary proportionally to the frequency difference between them ("beat frequency") so it is necessary to keep the transmitters closely synchronized in frequency. Jeff, k9ja --- Jeffrey Austen | Tennessee Technological University jausten@tntech.edu | Box 5004 +1-931-372-3485 | Cookeville Tennessee 38505 U.S.A. --- You are currently subscribed to ss as: lyris.ss@tapr.org To unsubscribe send a blank email to leave-ss-6751T@lists.tapr.org From bounce-ss-6751@lists.tapr.org Thu Sep 23 11:38:55 1999 Received: from lists.tapr.org (lists.tapr.org [204.17.217.24]) by tapr.org (8.9.3/8.9.3/1.10) with SMTP id LAA27798 for ; Thu, 23 Sep 1999 11:38:54 -0500 (CDT) Message-ID: From: "F_L_FISHER" To: "TAPR Spread Spectrum Special Interest Group" Subject: [ss] info Date: Thu, 23 Sep 1999 09:36:59 -0700 X-Priority: 3 X-MSMail-Priority: Normal X-MimeOLE: Produced By Microsoft MimeOLE V4.72.3612.1700 List-Unsubscribe: List-Software: Lyris Server version 3.0 List-Subscribe: List-Owner: X-List-Host: Tucson Amateur Packet Radio Reply-To: "TAPR Spread Spectrum Special Interest Group" X-Message-Id: <000a01bf05e1$f2d837a0$5186ffd0@708661617> Sender: bounce-ss-6751@lists.tapr.org Precedence: bulk K 1.) What ticket is required for APR? I have none yet. 2.) Kenwood TM-VLA mobile with 12v power supply looks like a good all around radio as well as for APR. Anyone agree or have a better idea? All suggestions appreciated. Thanks, Frank --- You are currently subscribed to ss as: lyris.ss@tapr.org To unsubscribe send a blank email to leave-ss-6751T@lists.tapr.org From bounce-ss-6751@lists.tapr.org Thu Sep 23 18:14:14 1999 Received: from lists.tapr.org (lists.tapr.org [204.17.217.24]) by tapr.org (8.9.3/8.9.3/1.10) with SMTP id SAA10460 for ; Thu, 23 Sep 1999 18:14:14 -0500 (CDT) X-Sender: kn6td@mail.clubnet.net Date: Thu, 23 Sep 1999 16:07:21 -0700 To: "TAPR Spread Spectrum Special Interest Group" From: Derek Lassen Subject: [ss] Re: info In-Reply-To: Mime-Version: 1.0 Content-Type: text/plain; charset="us-ascii" Message-ID: List-Unsubscribe: List-Software: Lyris Server version 3.0 List-Subscribe: List-Owner: X-List-Host: Tucson Amateur Packet Radio Reply-To: "TAPR Spread Spectrum Special Interest Group" X-Message-Id: <1273994257-6392961@mail.clubnet.net> Sender: bounce-ss-6751@lists.tapr.org Precedence: bulk Technician (No code requirement) At 09:36 AM 9/23/99 -0700, you wrote: >K > >1.) What ticket is required for APR? I have none yet. > >2.) Kenwood TM-VLA mobile with 12v power supply looks like a good all >around radio as well as for APR. Anyone agree or have a better idea? >All suggestions appreciated. > >Thanks, >Frank > > > > > > >--- >You are currently subscribed to ss as: KN6TD@CLUBNET.NET >To unsubscribe send a blank email to leave-ss-6751T@lists.tapr.org > --- You are currently subscribed to ss as: lyris.ss@tapr.org To unsubscribe send a blank email to leave-ss-6751T@lists.tapr.org From bounce-ss-6751@lists.tapr.org Thu Sep 23 18:51:37 1999 Received: from lists.tapr.org (lists.tapr.org [204.17.217.24]) by tapr.org (8.9.3/8.9.3/1.10) with SMTP id SAA10987 for ; Thu, 23 Sep 1999 18:51:36 -0500 (CDT) X-Sender: kn6td@mail.clubnet.net Date: Thu, 23 Sep 1999 16:46:14 -0700 To: "TAPR Spread Spectrum Special Interest Group" From: Derek Lassen Subject: [ss] 2.4 Ghz WaveLAN PCMCIA Mime-Version: 1.0 Content-Type: text/plain; charset="us-ascii" Message-ID: List-Unsubscribe: List-Software: Lyris Server version 3.0 List-Subscribe: List-Owner: X-List-Host: Tucson Amateur Packet Radio Reply-To: "TAPR Spread Spectrum Special Interest Group" X-Message-Id: <1273991925-6533344@mail.clubnet.net> Sender: bounce-ss-6751@lists.tapr.org Precedence: bulk Anybody want to trade their short 900 mhz WaveLANs for my PCMCIA WAVELANS? --- You are currently subscribed to ss as: lyris.ss@tapr.org To unsubscribe send a blank email to leave-ss-6751T@lists.tapr.org From bounce-ss-6751@lists.tapr.org Thu Sep 23 19:08:57 1999 Received: from lists.tapr.org (lists.tapr.org [204.17.217.24]) by tapr.org (8.9.3/8.9.3/1.10) with SMTP id TAA11507 for ; Thu, 23 Sep 1999 19:08:57 -0500 (CDT) From: smorris@mindspring.com Message-ID: To: "TAPR Spread Spectrum Special Interest Group" References: Subject: [ss] Re: info Date: Thu, 23 Sep 1999 20:09:38 -0400 MIME-Version: 1.0 Content-Type: text/plain; charset="iso-8859-1" Content-Transfer-Encoding: 7bit X-Priority: 3 X-MSMail-Priority: Normal X-MimeOLE: Produced By Microsoft MimeOLE V5.00.2615.200 List-Unsubscribe: List-Software: Lyris Server version 3.0 List-Subscribe: List-Owner: X-List-Host: Tucson Amateur Packet Radio Reply-To: "TAPR Spread Spectrum Special Interest Group" X-Message-Id: <002401bf0621$17b21f20$0501a8c0@smorris> Sender: bounce-ss-6751@lists.tapr.org Precedence: bulk Technician is required for APRS. As to radios, any radio will work. The TM-V7A is very flexible. It will allow you to run APRS on VHF and allow you to talk on VHF at the same time. I have one and I really like it. Order the kit to mount the display in another place. I can never find a good place in today's cars/trucks to mount the radio where it is a good viewing spot. Scott ----- Original Message ----- From: F_L_FISHER To: TAPR Spread Spectrum Special Interest Group Sent: Thursday, September 23, 1999 12:36 PM Subject: [ss] info > K > > 1.) What ticket is required for APR? I have none yet. > > 2.) Kenwood TM-VLA mobile with 12v power supply looks like a good all > around radio as well as for APR. Anyone agree or have a better idea? > All suggestions appreciated. > > Thanks, > Frank > > > > > > > --- > You are currently subscribed to ss as: SMORRIS@MINDSPRING.COM > To unsubscribe send a blank email to leave-ss-6751T@lists.tapr.org > --- You are currently subscribed to ss as: lyris.ss@tapr.org To unsubscribe send a blank email to leave-ss-6751T@lists.tapr.org From bounce-ss-6751@lists.tapr.org Thu Sep 23 19:34:26 1999 Received: from lists.tapr.org (lists.tapr.org [204.17.217.24]) by tapr.org (8.9.3/8.9.3/1.10) with SMTP id TAA12109 for ; Thu, 23 Sep 1999 19:34:25 -0500 (CDT) Message-ID: From: "F_L_FISHER" To: "TAPR Spread Spectrum Special Interest Group" Subject: [ss] Re: info Date: Thu, 23 Sep 1999 17:31:56 -0700 X-Priority: 3 X-MSMail-Priority: Normal X-MimeOLE: Produced By Microsoft MimeOLE V4.72.3612.1700 List-Unsubscribe: List-Software: Lyris Server version 3.0 List-Subscribe: List-Owner: X-List-Host: Tucson Amateur Packet Radio Reply-To: "TAPR Spread Spectrum Special Interest Group" X-Message-Id: <000c01bf0624$5400ef80$a486ffd0@708661617> Sender: bounce-ss-6751@lists.tapr.org Precedence: bulk Thanks Scott on ticket answer and the encouragement on the Kenwood TM-V7A. I'm good to go to AES for $459.95. Correcto? Frank --- You are currently subscribed to ss as: lyris.ss@tapr.org To unsubscribe send a blank email to leave-ss-6751T@lists.tapr.org From bounce-ss-6751@lists.tapr.org Fri Sep 24 22:20:27 1999 Received: from lists.tapr.org (lists.tapr.org [204.17.217.24]) by tapr.org (8.9.3/8.9.3/1.10) with SMTP id WAA09063 for ; Fri, 24 Sep 1999 22:20:26 -0500 (CDT) Message-ID: From: "Tim Cunningham" To: "TAPR Spread Spectrum Special Interest Group" Subject: [ss] Re: info Date: Fri, 24 Sep 1999 22:14:55 -0500 MIME-Version: 1.0 Content-Type: text/plain; charset="iso-8859-1" Content-Transfer-Encoding: 7bit X-Priority: 3 X-MSMail-Priority: Normal X-MimeOLE: Produced By Microsoft MimeOLE V4.72.3612.1700 List-Unsubscribe: List-Software: Lyris Server version 3.0 List-Subscribe: List-Owner: X-List-Host: Tucson Amateur Packet Radio Reply-To: "TAPR Spread Spectrum Special Interest Group" X-Message-Id: <005801bf0704$2544e940$d686aec7@cunninghamt.genrad.com> Sender: bounce-ss-6751@lists.tapr.org Precedence: bulk >As to radios, any radio will work. The TM-V7A is very flexible. It will >allow you to run APRS on VHF and allow you to talk on VHF at the same time. >I have one and I really like it. Order the kit to mount the display in >another place. I can never find a good place in today's cars/trucks to >mount the radio where it is a good viewing spot. > >Scott Does the TM-V7A have a PTT line on the microphone or is the PTT signal digitally encoded from the microphone like many of the other new radio's on the market? I have another brand of radio I have been using with an APRS Mic-Encoder, but there is no PTT line on the microphone plug. Instead, the PTT signal is encoded on a serial stream of data to the radio from the microphone and the radio decodes the information. The APRS Mic-E does not work with this type of arrangement at all, unless you get real creative with some fancy modifications to the radio. The radio I am using has a 1200/9600 packet connector on the back of the radio that I wired to the Mic-E, but I had to modify the radio to the get a decoded PTT signal back to the Mic-E so it would hold the PTT line at the packet jack on the radio. Unfortunately, when the PTT is dropped from the microphone, the radio unkeys before the microprocessor in the radio looks at the PTT signal at the packet jack. This is a real pain. The result is that my signal drops momentarily when I unkey the microphone and rekeys the transmitter when it discovers that the PTT is activated from the packet jack (PTT challenged). So, when I am on a voice repeater and unkey the microphone using my Mic-E, there is a short squelch tail before the data from the Mic-E is presented at the end of a transmission. This requires the end of transmission to be longer in order for the transmitter to settle and send the APRS posit which equates to about 200-300ms longer than what it really should be if the transmitter did not drop in the first place. Considering that most courtesy beacons are more annoying than the Mic-E posit, it may not matter anyway. Anybody who wants to use a Mic-E or similar device on some of these new radio's should be aware of this condition as a Mic-E will not work without some radio modification if the radio does not have a dedicated PTT line. In some cases it may not be possible or require major effort. If one wants to merely use a radio for APRS on 2M just to beacon on the APRS network, most radio's that have a packet data jack or a true hardwired old fashion PTT line on the microphone jack can be utilized. Most can be modified if they do not meet the above requirements. However, my point is specifically directed to those who may be interested in using a Mic-E or similar device to attached an APRS packet posit at the end of a voice transmission. 73's, Tim - N8DEU Huntsville --- You are currently subscribed to ss as: lyris.ss@tapr.org To unsubscribe send a blank email to leave-ss-6751T@lists.tapr.org From bounce-ss-6751@lists.tapr.org Sun Sep 26 19:47:05 1999 Received: from lists.tapr.org (lists.tapr.org [204.17.217.24]) by tapr.org (8.9.3/8.9.3/1.10) with SMTP id TAA11356 for ; Sun, 26 Sep 1999 19:47:05 -0500 (CDT) Message-ID: From: Administrator Reply-To: "TAPR Spread Spectrum Special Interest Group" To: "TAPR Spread Spectrum Special Interest Group" Subject: [ss] E-Commerce Date: Sun, 26 Sep 1999 17:44:02 -0700 Organization: Torabi MIME-Version: 1.0 Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: 7bit List-Unsubscribe: List-Software: Lyris Server version 3.0 List-Subscribe: List-Owner: X-List-Host: Tucson Amateur Packet Radio X-Message-Id: <01BF0846.B82B6D90.Administrator@Torabi.com> Sender: bounce-ss-6751@lists.tapr.org Precedence: bulk E-Commerce Internet Interactive Secure On-line E-Commerce Management System. Complete Design, Development, Management, and Maintenance. Microsoft Back Office Platform. Storing information in MS Sql Server Database; Complete tracking, retrieving, and reporting capabilities in real time. All you need is your browser to run e-business. Internet Site: www.Torabi.com Email: Ehsan@Torabi.com Phone: (310) 573-9843 Please review my Resume Profile online at: http://Torabi.com Or visit http://LAMarket.net Thank you Ehsan Torabi Information Systems Analyst P.S. Sorry for interruption, I was looking for job (e-commerce project); I thought you might be able to help. Thank you for your kindness. --- You are currently subscribed to ss as: lyris.ss@tapr.org To unsubscribe send a blank email to leave-ss-6751T@lists.tapr.org From bounce-ss-6751@lists.tapr.org Wed Sep 29 12:55:50 1999 Received: from lists.tapr.org (lists.tapr.org [204.17.217.24]) by tapr.org (8.9.3/8.9.3/1.10) with SMTP id MAA18468 for ; Wed, 29 Sep 1999 12:55:50 -0500 (CDT) Message-ID: X-Originating-IP: [195.24.192.65] From: "valantine nyenty" To: "TAPR Spread Spectrum Special Interest Group" Subject: [ss] Re: An interesting spread spectrum patent Date: Wed, 29 Sep 1999 10:51:00 PDT Mime-Version: 1.0 Content-Type: text/plain; format=flowed List-Unsubscribe: List-Software: Lyris Server version 3.0 List-Subscribe: List-Owner: X-List-Host: Tucson Amateur Packet Radio Reply-To: "TAPR Spread Spectrum Special Interest Group" X-Message-Id: <19990929175102.6989.qmail@hotmail.com> Sender: bounce-ss-6751@lists.tapr.org Precedence: bulk Please Help Me. I would like to get a complete set of equipements to be able to perform experiments on DIRECT SEQUENCE SPREAD SPECTRUM SYSTEMS AS WELL AS GENERAL LABORATORY EQUIPEMENTS FOR A radio frequency Design. This is to peermit my laboratory do do research in the area of spread spectrum systems. please this is urgent as a budget is already in place. ______________________________________________________ Get Your Private, Free Email at http://www.hotmail.com --- You are currently subscribed to ss as: lyris.ss@tapr.org To unsubscribe send a blank email to leave-ss-6751T@lists.tapr.org