From bounce-ss-6751@lists.tapr.org Mon Apr 5 10:11:33 1999 Received: from lists.tapr.org (lists.tapr.org [204.17.217.24]) by tapr.org (8.9.3/8.9.3/1.9) with SMTP id KAA20358 for ; Mon, 5 Apr 1999 10:11:32 -0500 (CDT) Message-ID: X-Originating-IP: [195.100.177.69] From: "Hamoperator SM7UGT Marcel bos" To: "TAPR Spread Spectrum Special Interest Group" Cc: sm0ugt@hotmail.com Subject: [ss] Voice activated switch.. wanted please help... Need one badly! Date: Mon, 05 Apr 1999 08:07:47 PDT 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: <19990405150748.98737.qmail@hotmail.com> Sender: bounce-ss-6751@lists.tapr.org Precedence: bulk My time is short and and I need a vox. I Built one but I failed to complete it. Something is wrong. Shall be used for a Iphone link in stockholm, so you guys can chat with them. I don't expect "for free" - but it allways nice with a contrubution. The radio I plan to use is an IC04AT - then I have an ICw2.. /Marcel, SM0UGT@hotmail.com... -- Thanks ______________________________________________________ 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 Apr 7 06:21:54 1999 Received: from lists.tapr.org (lists.tapr.org [204.17.217.24]) by tapr.org (8.9.3/8.9.3/1.9) with SMTP id GAA17617 for ; Wed, 7 Apr 1999 06:21:53 -0500 (CDT) MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Transfer-Encoding: 7bit Message-ID: Date: Wed, 7 Apr 1999 07:20:07 -0400 (EDT) From: Howard Goldstein To: "TAPR Spread Spectrum Special Interest Group" Subject: [ss] rtems / oar Organization: disorganization 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: <14091.16231.486469.351925@penny.south.mpcs.com> Sender: bounce-ss-6751@lists.tapr.org Precedence: bulk some folks were hunting down oar (RTEMS) a few days ago. those so situated will find the juicy stuff available off of http://lancelot.gcs.redstone.army.mil/rtems.html ...all the juicy stuff except for (from where i sit) a bit of time and an active design spec that cries out for it. it looks like an awesome package. --- 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 Apr 7 06:32:03 1999 Received: from lists.tapr.org (lists.tapr.org [204.17.217.24]) by tapr.org (8.9.3/8.9.3/1.9) with SMTP id GAA18375 for ; Wed, 7 Apr 1999 06:32:03 -0500 (CDT) Message-ID: Date: Wed, 7 Apr 1999 06:29:27 -0500 From: Jake Janovetz To: "TAPR Spread Spectrum Special Interest Group" Subject: [ss] Re: rtems / oar References: Mime-Version: 1.0 Content-Type: text/plain; charset=us-ascii In-Reply-To: ; from Howard Goldstein on Wed, Apr 07, 1999 at 07:20:07AM -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: <19990407062927.B32231@tempest.ece.uiuc.edu> Sender: bounce-ss-6751@lists.tapr.org Precedence: bulk Actually, their web site has moved recently (last 8 months or so). http://www.oarcorp.com/ I just accessed it, so it is up and running. (It was down for a few hours a week ago or so) Cheers, Jake On Wed, Apr 07, 1999 at 07:20:07AM -0400, Howard Goldstein wrote: > > some folks were hunting down oar (RTEMS) a few days ago. those so > situated will find the juicy stuff available off of > > http://lancelot.gcs.redstone.army.mil/rtems.html > > ...all the juicy stuff except for (from where i sit) a bit of time and > an active design spec that cries out for it. it looks like an > awesome package. > > --- > 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 Thu Apr 8 12:40:49 1999 Received: from lists.tapr.org (lists.tapr.org [204.17.217.24]) by tapr.org (8.9.3/8.9.3/1.9) with SMTP id MAA27856 for ; Thu, 8 Apr 1999 12:40:49 -0500 (CDT) Mime-Version: 1.0 Content-Type: text/plain; charset="us-ascii" Message-Id: Date: Thu, 8 Apr 1999 12:30:22 -0500 To: "TAPR Spread Spectrum Special Interest Group" From: "Greg Jones, WD5IVD" Subject: [ss] TAPR Board of Directors Election Reminder 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 is a reminder to all TAPR members* that the TAPR Board of Directors Election is happening until April 15th. The current PSR supplied the necessary information for voting electronically or via the mail. If you don't know the web address or have lost your voter verification number, then please send e-mail to tapr@tapr.org or call the TAPR office (940) 383-0000 and Dorothy can supply you with the necessary information for voting on-line. The following people this year are running for the TAPR board of directors. Steve Bible, N7HPR Steve Dimse, K4HG Bob Hansen, N2GDE Steve Stroh, N8GNJ Your vote as a member is important -- be sure to vote! Cheers - Greg Jones, WD5IVD President, TAPR --------- * membership current as of or before January 1, 1999 to be able to vote. ---------------------------------------------------------------------------- Tucson Amateur Packet Radio 8987-309 E Tanque Verde Rd #337 * Tucson, Az * 85749-9399 ---------------------------------------------------------------------------- e-mail: tapr@tapr.org web: ftp: ftp.tapr.org phone: 940-383-0000 fax: 940-565-2544 ---------------------------------------------------------------------------- --- 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 Apr 8 17:23:46 1999 Received: from lists.tapr.org (lists.tapr.org [204.17.217.24]) by tapr.org (8.9.3/8.9.3/1.9) with SMTP id RAA07451 for ; Thu, 8 Apr 1999 17:23:46 -0500 (CDT) Message-Id: Comments: Authenticated sender is From: "Marcelo Puhl" Organization: Improving To: "TAPR Spread Spectrum Special Interest Group" Date: Thu, 8 Apr 1999 19:22:44 -2 MIME-Version: 1.0 Content-type: text/plain; charset=US-ASCII Content-transfer-encoding: 7BIT Subject: [ss] Off Topic : CDPD Reply-to: "TAPR Spread Spectrum Special Interest Group" Priority: normal In-reply-to: List-Unsubscribe: List-Software: Lyris Server version 3.0 List-Subscribe: List-Owner: X-List-Host: Tucson Amateur Packet Radio X-Message-Id: <199904082223.TAA14014@bigbox.plug-in.com.br> Sender: bounce-ss-6751@lists.tapr.org Precedence: bulk Hi, I'm doing my master degree on Wirelles Data Comm and my thesis will be on implementing a CDPD modem. I got the System Specification release 1.1 and I have just started to study it. What I'm asking for are recommendations about chipsets, evaluation boards or something like that to start my work. Thanks for any info. Marcelo Puhl - PY3SS mark@plug-in.com.br --- 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 Apr 12 12:03:41 1999 Received: from lists.tapr.org (lists.tapr.org [204.17.217.24]) by tapr.org (8.9.3/8.9.3/1.9) with SMTP id MAA07177 for ; Mon, 12 Apr 1999 12:03:41 -0500 (CDT) Message-ID: X-Priority: 3 (Normal) Content-Type: text/plain; charset=us-ascii Content-Transfer-Encoding: 7bit MIME-Version: 1.0 Date: Mon, 12 Apr 1999 17:51:14 +0100 (BST) Reply-To: "TAPR Spread Spectrum Special Interest Group" Organization: Tobit Computer Co Ltd Sender: bounce-ss-6751@lists.tapr.org From: Dirk Koopman To: "TAPR Spread Spectrum Special Interest Group" Subject: [ss] Questions.. List-Unsubscribe: List-Software: Lyris Server version 3.0 List-Subscribe: List-Owner: X-List-Host: Tucson Amateur Packet Radio X-Message-Id: Precedence: bulk Bin reading the ARRL SS Book. I have a few questions that arise from it and and some more general questions which I would appreciate some help with. I would much prefer Web based references to hardcopy ones. 1. The favoured technique for syncronisation in the ARRL book seems to be to run the PLL deliberately slower or faster than the chip rate you are expecting. Would it not be better to leave the coding unit (shift register or whatever) set at some known value and then syncronise with pulses that happen when the code converges every time the m-sequence (or whatever) comes round again? (I am probably presuming DSS here). 2. In a FHSS system what method do you actually use to syncronise. 3. For these 'modern' FHSS cards that we see with > 1Mb/s transfer speeds are they 'slow' hoppers (i.e. more than one transmitted databit per hop) or 'fast' (more than one hop per bit). 4. If they are slow hoppers do they packetise the data and effectively use each hop as a slot with a packet containing data and FEC/CS. 5. Is there any research/information on using FEC techniques within the spreading sequence itself so that it isn't necessary to have a 'perfect' match but can still resolve data. Is it any use compared with FECing the actual data instead and sending that? 6. Are there any dedicated Viterbi/soft decision codec chips as such out there that can work at > 500Kb/s that will take either an I & Q baseband input or some digital converted equiv. I am specifically looking for something that isn't already connected to some radio or other similar hardware. Regards Dirk G1TLH --- Dirk-Jan Koopman, Tobit Computer Co Ltd At the source of every error which is blamed on the computer you will find at least two human errors, including the error of blaming it on the computer. --- 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 Apr 13 04:57:05 1999 Received: from lists.tapr.org (lists.tapr.org [204.17.217.24]) by tapr.org (8.9.3/8.9.3/1.9) with SMTP id EAA24052 for ; Tue, 13 Apr 1999 04:57:04 -0500 (CDT) Message-ID: X-Originating-IP: [193.136.224.2] From: "Rui Guerreiro" To: "TAPR Spread Spectrum Special Interest Group" Subject: [ss] correlator Date: Tue, 13 Apr 1999 02:57:46 PDT 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: <19990413095747.22339.qmail@hotmail.com> Sender: bounce-ss-6751@lists.tapr.org Precedence: bulk I would like to know where I can buy correlators that work around 1 or 2 MHz for baseband digital transmission. Thanks Rui G ______________________________________________________ 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 Tue Apr 13 05:27:29 1999 Received: from lists.tapr.org (lists.tapr.org [204.17.217.24]) by tapr.org (8.9.3/8.9.3/1.9) with SMTP id FAA24801 for ; Tue, 13 Apr 1999 05:27:28 -0500 (CDT) Message-ID: Date: Tue, 13 Apr 1999 12:25:11 +0200 From: "Marius Hauki" Organization: Data Respons MIME-Version: 1.0 To: "TAPR Spread Spectrum Special Interest Group" Subject: [ss] Re: correlator References: Content-Type: text/plain; charset=iso-8859-1 Content-Transfer-Encoding: 8bit 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: <37131B87.635EA350@datarespons.no> Sender: bounce-ss-6751@lists.tapr.org Precedence: bulk Rui Guerreiro wrote: > I would like to know where I can buy correlators that work around > 1 or 2 MHz for baseband digital transmission. > > Thanks > > Rui G > > ______________________________________________________ > Get Your Private, Free Email at http://www.hotmail.com > > --- > You are currently subscribed to ss as: MARIUS@DATARESPONS.NO > To unsubscribe send a blank email to leave-ss-6751T@lists.tapr.org There are several vendors. Harris used to have some pretty good bit correlators. You can also make them yourselves with a couple of shift regs and some xors.You would need some way of clocking the data though. The best way is probably to use a DSP to correlate. Actually you can do some good correlation with FIR filters that have coefficients to mach the pattern you are correlating on. Then you would also be able to extract the relative timer information. That is ;when the match happened relative to some time reference. Several FIR filters can be incorporated with a single dsp. That means you can corellate on several patterns. 73 de LA9EEA Marius Hauki -- ------------------------------------------------------------- Data Respons har nylig opprettet en mer formalisert support-tjeneste basert på e-post. Vennligst send beskrivelse av problemet på ENGELSK til sw-support@datarespons.no for SW, h.h.v. til hw-support@datarespons.no for HW. ------------------------------------------------------------- Marius Hauki Data Respons AS Product Manager Sandviksveien 26 P.O. Box 489 N-1322 Hoevik Dir.Ph. :+47 67 11 20 16 Norway phone :+47 67 11 20 00 fax :+47 67 11 20 50 mailto:marius@datarespons.no Cellular :+47 90 05 16 66 http://www.datarespons.no --- 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 Apr 13 10:25:16 1999 Received: from lists.tapr.org (lists.tapr.org [204.17.217.24]) by tapr.org (8.9.3/8.9.3/1.9) with SMTP id KAA02336 for ; Tue, 13 Apr 1999 10:25:16 -0500 (CDT) Message-ID: From: "yamn" To: "TAPR Spread Spectrum Special Interest Group" Subject: [ss] =?gb2312?B?u9i4tDogW3NzXSBjb3JyZWxhdG9y?= Date: Tue, 13 Apr 1999 22:32:30 +0800 MIME-Version: 1.0 Content-Type: text/plain; charset="gb2312" Content-Transfer-Encoding: 8bit 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 Reply-To: "TAPR Spread Spectrum Special Interest Group" X-Message-Id: <001201be85ba$76450a80$49416fa6@archane.ee.tsinghua.edu.cn> Sender: bounce-ss-6751@lists.tapr.org Precedence: bulk Using FPGA or DSP. Best regards, Zhang,Yaming yamn@public.bjnet.edu.cn -----Original Message----- ·¢¼þÈË: Rui Guerreiro ÊÕ¼þÈË: TAPR Spread Spectrum Special Interest Group ÈÕÆÚ: 1999Äê4ÔÂ13ÈÕ 17:01 Ö÷Ìâ: [ss] correlator >I would like to know where I can buy correlators that work around >1 or 2 MHz for baseband digital transmission. > >Thanks > >Rui G > > > >______________________________________________________ >Get Your Private, Free Email at http://www.hotmail.com > >--- >You are currently subscribed to ss as: yamn@public.bjnet.edu.cn >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 Apr 13 18:37:47 1999 Received: from lists.tapr.org (lists.tapr.org [204.17.217.24]) by tapr.org (8.9.3/8.9.3/1.9) with SMTP id SAA16996 for ; Tue, 13 Apr 1999 18:37:47 -0500 (CDT) Message-ID: From: "Gregory Beat" To: "TAPR Spread Spectrum Special Interest Group" Subject: [ss] RadioLAN quotes Date: Tue, 13 Apr 1999 18:35:50 -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 V4.72.3155.0 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: <004a01be8606$5dae91c0$eb988318@apollo.ce.mediaone.net> Sender: bounce-ss-6751@lists.tapr.org Precedence: bulk Michael Clair CEO RadioLAN Inc. (Sunnyvale, Calif.) Recent quotations: ON CONVERGENCE: "Pundits will have you believe that it's here. But vendors have to rework their technology, throwing out the old and bringing in the new." ON PRODUCT FAILURES: "We've got more battle scars than anybody. Sometimes it takes years to perfect things." ON WIRELESS LANS: "1999 will be the year of the WLAN. It's easy to overcome old perceptions about these products. Just make something great and let test labs publish their reports." For more from Michael Clair, click on http://www.data.com/issue/990421/clair.html "Once you have flown, you will walk the earth with your eyes turned skyward, for there you have been, there you long to return." -- Leonardo da Vinci --- 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 Apr 13 19:49:56 1999 Received: from lists.tapr.org (lists.tapr.org [204.17.217.24]) by tapr.org (8.9.3/8.9.3/1.9) with SMTP id TAA18742 for ; Tue, 13 Apr 1999 19:49:56 -0500 (CDT) Date: Wed, 14 Apr 1999 01:48:10 +0100 (WET DST) From: Henrique Miranda To: "TAPR Spread Spectrum Special Interest Group" Subject: [ss] Re: correlator 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 Hello Rui, > I would like to know where I can buy correlators that work around > 1 or 2 MHz for baseband digital transmission. > Stanford Telecom (http://www.stelhq.com) has several chips that probably will do. These are: STEL-2410: high rate accumulator/correlator STEL-3310: dual 64-tap, 11 Mcps, cascadable digital matched filter STEL-3340: dual 64-tap, 11 Mcps, cascadable digital matched filter (with micro-processor interface) I hope this helps. Henrique Miranda --- 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 Apr 13 22:51:09 1999 Received: from lists.tapr.org (lists.tapr.org [204.17.217.24]) by tapr.org (8.9.3/8.9.3/1.9) with SMTP id WAA23878 for ; Tue, 13 Apr 1999 22:51:05 -0500 (CDT) Message-ID: From: "Marty Tennant" To: "TAPR Spread Spectrum Special Interest Group" Subject: [ss] Time Domain in USA Today Date: Tue, 13 Apr 1999 23:49:06 -0400 MIME-Version: 1.0 Content-Type: text/plain; charset="Windows-1252" Content-Transfer-Encoding: 7bit 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: <005001be8629$c0731060$4abd74cc@ltd> Sender: bounce-ss-6751@lists.tapr.org Precedence: bulk Hope everyone got to see the excellent article in USA Today on Time Domain. http://www.time-domain.com/news.html will allow you to download a .pdf version of the USA Today articles if you missed them in the 4/9/99 issue. Marty Tennant President Low Tech Designs, Inc. "Bringing Technology Down to Earth" sm YEA!! sm - Your Electronic Agent!! sm 1204 Saville St. Georgetown, SC 29440 843 527-4485 voice 843 527-7783 fax --- 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 Apr 14 08:24:58 1999 Received: from lists.tapr.org (lists.tapr.org [204.17.217.24]) by tapr.org (8.9.3/8.9.3/1.9) with SMTP id IAA23578 for ; Wed, 14 Apr 1999 08:24:57 -0500 (CDT) Message-ID: From: "Steve Sampson" To: "TAPR Spread Spectrum Special Interest Group" Subject: [ss] Re: Time Domain in USA Today Date: Wed, 14 Apr 1999 08:19:53 -0500 MIME-Version: 1.0 Content-Type: text/plain; charset="Windows-1252" 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 Reply-To: "TAPR Spread Spectrum Special Interest Group" X-Message-Id: <000801be8679$7c5d32c0$87228cd1@dodge.spacewar.net> Sender: bounce-ss-6751@lists.tapr.org Precedence: bulk Well I went and read the article. First off, it's an article from the legal section and not the technical section. Second, I still don't know what "time-domain modulation" is? I would expect if you modulate the time, that biological death occurs :-) Third, if the patent was issued in 1987, then in 2004 it would expire (another 5 years). I suspect any beginning lawyer can keep a case tied-up that long. Meanwhile, maybe Time-Domain could publish some "technical" articles? Ways around the FCC prohibition of pulse transmissions? You would think that after 12 years since patent issue, that they would have even one product to show, rather than a laboratory experiment?? Steve -----Original Message----- From: Marty Tennant To: TAPR Spread Spectrum Special Interest Group Date: Tuesday, April 13, 1999 10:50 PM Subject: [ss] Time Domain in USA Today >Hope everyone got to see the excellent article in USA Today on Time Domain. > >http://www.time-domain.com/news.html > >will allow you to download a .pdf version of the USA Today articles if you >missed them in the 4/9/99 issue. > >Marty Tennant >President >Low Tech Designs, Inc. >"Bringing Technology Down to Earth" sm >YEA!! sm - Your Electronic Agent!! sm >1204 Saville St. >Georgetown, SC 29440 >843 527-4485 voice >843 527-7783 fax > > > >--- >You are currently subscribed to ss as: SSAMPSON@USA-SITE.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 Wed Apr 14 09:11:07 1999 Received: from lists.tapr.org (lists.tapr.org [204.17.217.24]) by tapr.org (8.9.3/8.9.3/1.9) with SMTP id JAA24921 for ; Wed, 14 Apr 1999 09:11:05 -0500 (CDT) Message-ID: From: "Marty Tennant" To: "TAPR Spread Spectrum Special Interest Group" References: Subject: [ss] Re: Time Domain in USA Today Date: Wed, 14 Apr 1999 10:08:09 -0400 MIME-Version: 1.0 Content-Type: text/plain; charset="Windows-1252" Content-Transfer-Encoding: 7bit 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: <001a01be8680$3b31ae00$69bd74cc@ltd> Sender: bounce-ss-6751@lists.tapr.org Precedence: bulk There were two .pdf files from USA Today on the Time Domain site. One was a front-page article on the legal fight with Lawrence Livermore Labs. The other was a business section article on the technology. I would also encourage all interested parties to go search the FCC's Electronic Filing System for comments and reply comments in the 98-153 UWB docket. Time Domain has a 92 page Reply Comment filing that is worth downloading. Goto: https://gullfoss.fcc.gov/cgi-bin/ws.exe/prod/ecfs/comsrch.hts and enter 98-153 in the "Proceeding" field. Lots of good technical info. Marty Tennant President Low Tech Designs, Inc. "Bringing Technology Down to Earth" sm YEA!! sm - Your Electronic Agent!! sm 1204 Saville St. Georgetown, SC 29440 843 527-4485 voice 843 527-7783 fax ----- Original Message ----- From: Steve Sampson To: TAPR Spread Spectrum Special Interest Group Sent: Wednesday, April 14, 1999 9:19 AM Subject: [ss] Re: Time Domain in USA Today Well I went and read the article. First off, it's an article from the legal section and not the technical section. Second, I still don't know what "time-domain modulation" is? I would expect if you modulate the time, that biological death occurs :-) Third, if the patent was issued in 1987, then in 2004 it would expire (another 5 years). I suspect any beginning lawyer can keep a case tied-up that long. Meanwhile, maybe Time-Domain could publish some "technical" articles? Ways around the FCC prohibition of pulse transmissions? You would think that after 12 years since patent issue, that they would have even one product to show, rather than a laboratory experiment?? Steve --- 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 Apr 14 09:53:54 1999 Received: from lists.tapr.org (lists.tapr.org [204.17.217.24]) by tapr.org (8.9.3/8.9.3/1.9) with SMTP id JAA25997 for ; Wed, 14 Apr 1999 09:53:53 -0500 (CDT) Message-Id: X-Sender: rvaughan@pop.gate.net Date: Wed, 14 Apr 1999 10:51:12 -0400 To: "TAPR Spread Spectrum Special Interest Group" From: Ray Vaughan Subject: [ss] Re: Time Domain in USA Today 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: <3.0.6.32.19990414105112.00b35eb0@pop.gate.net> Sender: bounce-ss-6751@lists.tapr.org Precedence: bulk >Meanwhile, maybe Time-Domain could publish some "technical" >articles? Ways around the FCC prohibition of pulse transmissions? > >You would think that after 12 years since patent issue, that they would >have even one product to show, rather than a laboratory experiment?? Seems to me that if they were real serious, they would have moved testing to a more forward thinking country... or maybe one that doesn't care. I'm sure we could all think of places where such technology could be tested. The FCC thing sounds more like an excuse. Ray, KD4BBM --- 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 Apr 14 10:05:47 1999 Received: from lists.tapr.org (lists.tapr.org [204.17.217.24]) by tapr.org (8.9.3/8.9.3/1.9) with SMTP id KAA26506 for ; Wed, 14 Apr 1999 10:05:46 -0500 (CDT) Message-ID: From: "Marty Tennant" To: "TAPR Spread Spectrum Special Interest Group" References: Subject: [ss] Re: Time Domain in USA Today Date: Wed, 14 Apr 1999 11:03:27 -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 V5.00.2314.1300 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: <00dd01be8687$f521e9e0$69bd74cc@ltd> Sender: bounce-ss-6751@lists.tapr.org Precedence: bulk What I found interesting is that Lawrence Livermore Labs tried to rip off their patents, and then sold the technology for BIG BUCKS to companies that couldn't use it, because the FCC rules didn't allow it. If you go to their website, they have plenty of technical stuff to satisfy folks. Or just go look at their patents online. Marty Tennant President Low Tech Designs, Inc. "Bringing Technology Down to Earth" sm YEA!! sm - Your Electronic Agent!! sm 1204 Saville St. Georgetown, SC 29440 843 527-4485 voice 843 527-7783 fax ----- Original Message ----- From: Ray Vaughan To: TAPR Spread Spectrum Special Interest Group Sent: Wednesday, April 14, 1999 10:51 AM Subject: [ss] Re: Time Domain in USA Today >Meanwhile, maybe Time-Domain could publish some "technical" >articles? Ways around the FCC prohibition of pulse transmissions? > >You would think that after 12 years since patent issue, that they would >have even one product to show, rather than a laboratory experiment?? Seems to me that if they were real serious, they would have moved testing to a more forward thinking country... or maybe one that doesn't care. I'm sure we could all think of places where such technology could be tested. The FCC thing sounds more like an excuse. Ray, KD4BBM --- You are currently subscribed to ss as: marty@sccoast.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 Wed Apr 14 10:33:14 1999 Received: from lists.tapr.org (lists.tapr.org [204.17.217.24]) by tapr.org (8.9.3/8.9.3/1.9) with SMTP id KAA27072 for ; Wed, 14 Apr 1999 10:33:14 -0500 (CDT) Message-ID: X-Priority: 3 (Normal) Content-Type: text/plain; charset=us-ascii Content-Transfer-Encoding: 7bit MIME-Version: 1.0 Date: Wed, 14 Apr 1999 16:18:30 +0100 (BST) Reply-To: "TAPR Spread Spectrum Special Interest Group" Organization: Tobit Computer Co Ltd Sender: bounce-ss-6751@lists.tapr.org From: Dirk Koopman To: "TAPR Spread Spectrum Special Interest Group" Subject: [ss] Another question.. List-Unsubscribe: List-Software: Lyris Server version 3.0 List-Subscribe: List-Owner: X-List-Host: Tucson Amateur Packet Radio X-Message-Id: Precedence: bulk Here is one I forgot.. If you use something like a GPS signal as a timing reference and you then take a number of DSS signals centred on the same frequency with the same spreading code (in every way identical) but offset the synconisation of each signal from the reference by a certain amount, can you expect to be able to resolve each of these signals separately? Dirk G1TLH --- Dirk-Jan Koopman, Tobit Computer Co Ltd At the source of every error which is blamed on the computer you will find at least two human errors, including the error of blaming it on the computer. --- 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 Apr 14 11:13:29 1999 Received: from lists.tapr.org (lists.tapr.org [204.17.217.24]) by tapr.org (8.9.3/8.9.3/1.9) with SMTP id LAA28490 for ; Wed, 14 Apr 1999 11:13:28 -0500 (CDT) Message-ID: Date: Wed, 14 Apr 1999 11:10:16 -0500 From: Jake Janovetz To: "TAPR Spread Spectrum Special Interest Group" Subject: [ss] Re: Another question.. References: Mime-Version: 1.0 Content-Type: text/plain; charset=us-ascii In-Reply-To: ; from Dirk Koopman on Wed, Apr 14, 1999 at 04:18:30PM +0100 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: <19990414111016.A26217@tempest.ece.uiuc.edu> Sender: bounce-ss-6751@lists.tapr.org Precedence: bulk Yes. The autocorrelation function will provide suitable separation. However, the trouble comes in knowing which of those signals is which. That is, you can separate them, but you don't quite know their identity because the code sequence is the same. Cheers, Jake On Wed, Apr 14, 1999 at 04:18:30PM +0100, Dirk Koopman wrote: > Here is one I forgot.. > > If you use something like a GPS signal as a timing reference and you then > take a number of DSS signals centred on the same frequency with the same > spreading code (in every way identical) but offset the synconisation of each > signal from the reference by a certain amount, can you expect to be able to > resolve each of these signals separately? > > Dirk G1TLH > --- > Dirk-Jan Koopman, Tobit Computer Co Ltd > At the source of every error which is blamed on the computer you will find > at least two human errors, including the error of blaming it on the computer. > > > > --- > 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 Wed Apr 14 15:41:53 1999 Received: from lists.tapr.org (lists.tapr.org [204.17.217.24]) by tapr.org (8.9.3/8.9.3/1.9) with SMTP id PAA08779 for ; Wed, 14 Apr 1999 15:41:53 -0500 (CDT) Mime-Version: 1.0 Content-Type: text/plain; charset="us-ascii" ; format="flowed" X-Sender: dewayne@mail.warpspeed.com Message-Id: Date: Wed, 14 Apr 1999 13:38:32 -0700 To: "TAPR Spread Spectrum Special Interest Group" From: Dewayne Hendricks Subject: [ss] Re: Time Domain in USA Today 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 10:51 -0400 4/14/99, Ray Vaughan wrote: >Seems to me that if they were real serious, they would have moved testing >to a more forward thinking country... or maybe one that doesn't care. I'm >sure we could all think of places where such technology could be tested. >The FCC thing sounds more like an excuse. I have talked to them about this and they are looking to do just that. -- Dewayne --- 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 Apr 17 14:01:27 1999 Received: from lists.tapr.org (lists.tapr.org [204.17.217.24]) by tapr.org (8.9.3/8.9.3/1.9) with SMTP id OAA03504 for ; Sat, 17 Apr 1999 14:01:26 -0500 (CDT) Message-ID: Date: Wed, 14 Apr 1999 13:57:18 -0700 (PDT) From: Mike Cummings Subject: [ss] Re: Another question.. To: "TAPR Spread Spectrum Special Interest Group" 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: <19990414205718.13837.rocketmail@send205.yahoomail.com> Sender: bounce-ss-6751@lists.tapr.org Precedence: bulk Yes, the military use systems that do something very simular with FH to allow freq. reuse, etc. There are some limits such as code length, and clocking errors between radios (this can be largely solved by useing your GPS as a common ref.). The most difficult thing is getting initial code and clock sync. with proper offset. (Your idea). kb7rcf@amsat.org _________________________________________________________ Do You Yahoo!? Get your free @yahoo.com address at http://mail.yahoo.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 Mon Apr 19 01:12:10 1999 Received: from lists.tapr.org (lists.tapr.org [204.17.217.24]) by tapr.org (8.9.3/8.9.3/1.9) with SMTP id BAA22964 for ; Mon, 19 Apr 1999 01:12:09 -0500 (CDT) From: "Mr. Mutimushi Patrick" Organization: THE UNIVERSITY OF ZAMBIA To: "TAPR Spread Spectrum Special Interest Group" Date: Mon, 19 Apr 1999 08:15:22 +0200 MIME-Version: 1.0 Content-type: text/plain; charset=US-ASCII Content-transfer-encoding: 7BIT Subject: [ss] DS/FS Priority: normal 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: Sender: bounce-ss-6751@lists.tapr.org Precedence: bulk Can somebody help me on how the hybrid method using DS/FH work. I would like to know how such a system can be implemented. I am doing a project on spread spectrum and its use in civilian communication systems. --- 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 Apr 19 13:12:47 1999 Received: from lists.tapr.org (lists.tapr.org [204.17.217.24]) by tapr.org (8.9.3/8.9.3/1.9) with SMTP id NAA21864 for ; Mon, 19 Apr 1999 13:12:46 -0500 (CDT) Mime-Version: 1.0 Content-Type: text/plain; charset="us-ascii" Message-Id: Date: Mon, 19 Apr 1999 12:58:12 -0500 To: "TAPR Spread Spectrum Special Interest Group" From: "Greg Jones, WD5IVD" Subject: [ss] TAPR activities at Dayton HamVention 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 TAPR Dayton Activities 1999 for details visit: http://www.tapr.org/tapr/html/Fdayton.html ------------------------------ TAPR Digital Forum on Friday The schedule for the TAPR digital forum is: 10:00 - 10:05am (5 min) Introduction to Forum, John Ackermann, N8UR 10:05 - 10:30am (25min) TAPR Update, Greg Jones, WD5IVD 10:30 - 11:00am (30 min) Linux AX.25 Update, John Ackermann, N8UR 11:00 - 11:30am (30 min) PIC Development Update, Steve Bible, N7HPR and John Hansen, W2FS 11:30 - 12:00noon (30 min) GPS Projects, Steve Bible, N7HPR 12:00noon - 12:30pm (30 min) Compact Flash Card Project, John Koster, W9DDD 12:30 - 1:00pm (30 min) TAPR APRS News, Steve Dimse, K4HG and Stan Horzepa, WA1LOU 1:00pm - 1:45pm (45 min) FHSS Radio Project Update, Tom McDermott, N5EG ------------------------------ Attending the 1999 Dayton Hamvention? Then don't miss out on PACK*BASH! What? An event for the digitally-inclined ham, featuring: * Buffet dinner * "A Little Technology Goes a Long Way" -- Keynote address by Dave Pederson, N7BHC * TAPR special interest group meetings * "Birds of a Feather" gatherings When? Friday evening, May 14, 1999 Doors open at 7:00 pm; dinner served at 7:30 pm Speaker and meetings after dinner Where? NCR "Sugarcamp" Conference Center, 101 W. Schantz Ave. -- South of downtown Dayton, just west of Main St. (Rt 48). Maps available on the TAPR web site (www.tapr.org) or at the TAPR booth. How? Dinner requires advance registration and payment through TAPR. Tickets will be available at the TAPR booth on Friday, though we strongly encourage registration Hamvention. The cost is $20.00 per person, tax and tip included. All amateurs are welcome to attend, enjoy the speaker, and particpate in the meetings, although only those purchasing a dinner can eat. To register, contact: PACK*BASH c/o TAPR 8987-309 E. Tanque Verde Road #337 Tucson, AZ 85749-9399 Phone: (940) 383-0000 Fax: (940) 566-2544 Internet: tapr@tapr.org Visa/Mastercard Accepted Who? PACK*BASH is co-sponsored by TAPR -- Tucson Amateur Packet Radio, the national leader in digital communication -- and the Miami Valley FM Association, Dayton's packet radio club. For more information (including maps), go to http://www.tapr.org/tapr/html/dayton.html, or send email to tapr@tapr.org. You can request information via packet radio at BASH@W8APR.#DAY.OH.USA.NOAM. ----- 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 Wed Apr 21 00:40:24 1999 Received: from lists.tapr.org (lists.tapr.org [204.17.217.24]) by tapr.org (8.9.3/8.9.3/1.9) with SMTP id AAA18911 for ; Wed, 21 Apr 1999 00:40:21 -0500 (CDT) Date: Wed, 21 Apr 1999 12:37:07 +0700 (JAVT) From: Thedy Suandi To: "TAPR Spread Spectrum Special Interest Group" Subject: [ss] DSSS 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 Can somebody help me to explain about the main difference of metode aquisition with sliding correlator and PN matched filter on tecnic direct sequence spread spectrum and the application in wireless LAN system. Which one that has more benefit and how about work process from that one? thanks Thedy Suandi --- 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 Apr 22 12:03:49 1999 Received: from lists.tapr.org (lists.tapr.org [204.17.217.24]) by tapr.org (8.9.3/8.9.3/1.9) with SMTP id MAA12714 for ; Thu, 22 Apr 1999 12:03:49 -0500 (CDT) Message-ID: X-Originating-IP: [195.100.177.69] From: "Hamoperator SM7UGT Marcel bos" To: "TAPR Spread Spectrum Special Interest Group" Subject: [ss] Spreadspectrum Packetradio group:Check worlds first IP-telephony handheld! Date: Thu, 22 Apr 1999 10:04:14 PDT 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: <19990422170414.37208.qmail@hotmail.com> Sender: bounce-ss-6751@lists.tapr.org Precedence: bulk http://www.symbol.com/data/std00069.htm Can this one be integrated in our system? ______________________________________________________ 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 Thu Apr 29 16:04:18 1999 Received: from lists.tapr.org (lists.tapr.org [204.17.217.24]) by tapr.org (8.9.3/8.9.3/1.9) with SMTP id QAA15665 for ; Thu, 29 Apr 1999 16:04:17 -0500 (CDT) Mime-Version: 1.0 Content-Type: text/plain; charset="us-ascii" Message-Id: Date: Thu, 29 Apr 1999 16:00:10 -0500 To: "TAPR Spread Spectrum Special Interest Group" From: Greg Jones Subject: [ss] ARRL & TAPR 1999 DCC Announcement 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 1999 ARRL and TAPR Digital Communications Conference September 24-26, 1999 Phoenix, Arizona Full announcement and details can be found at: http://www.tapr.org/dcc ----- The 1999 ARRL and TAPR Digital Communications Conference will be held September 24-26, 1999 in Phoenix, Arizona. This year's conference location is just minutes away from the Phoenix Sky Harbor International Airport (PHX). ----- Symposia, Seminars, Banquet In addition to the presentation of papers on Saturday, three symposia/seminars will be held. These sessions are provided to allow those with additional time and interest to make the most of the Digital Communications Conference. For those who may have interest in just one symposium or seminar, registration for the conference is not required to attend these activities. This allows maximum flexibility for those who may want to participate during the Digital Communications Conference, but do not have an entire weekend to devote to the event. The Third APRS National Symposium will be held on Friday and will be moderated by Steve Dimse, K4HG (the developer of javAPRS). It will likely include many APRS software authors, such as Bob Bruninga, WB4APR (the father of APRS), Keith Sproul, WU2Z, Mark Sproul, KB2ICI (the developers of MacAPRS and WinAPRS), Brent Hildebrand, KH2Z (the developer of APRSPLUS), Mike Musick, N0QBF (developer of PocketAPRS), and other nationally-known APRS leaders. Join this group for the afternoon and evening for in-depth discussions and presentations on the current and future status of APRS. This is a unique opportunity to gain insight into this fast- growing digital aspect of amateur operations that combines computers, packet radio, and GPS (Global Positioning System). Starting late Friday afternoon, a half-day technical seminar will be held. In the past this seminar has covered topics such as RF, DSP, Advanced Networking Topologies and other stimulating topics. On Saturday night the DCC Banquet will be held. This year the conference is proud to have Geoff Baehr, N6LXA, Sun Microsystems Chief Network Officer at the banquet to speak. Sun Microsystems has been doing some very exciting things in networking over the years and the talk should be an interesting one. After the banquet there will be time for special interest group gatherings. The Sunday morning seminar will be focused on PIC development, design, and programming. This five-and-a-half hour seminar will focus on the things you need to know now in order to understand and begin to participate in PIC development. PIC processors are becoming very important in various project designs and implementations. This seminar will by presented by the TAPR PIC Development team. ----- Fourth Annual ARRL and TAPR DCC Student Papers Award ARRL and TAPR especially welcome papers from full-time students to compete for the fourth annual student papers award. Two $500 travel awards may be given, one in each of the following categories: a) best technical/theory-oriented paper by a student, and b) best educational or community-oriented application paper by a student. The paper should relate directly to a wireless digital communication topic (see the guidelines for more information). Papers co-authored by educators or telecommunications professionals are also eligible for this award as long as a student is the first author. The deadline for receipt of finished student paper manuscript is July 10, 1999. Please note that this deadline is different from the general conference paper submission date. For full details and paper guidelines contact TAPR or browse to http://www.tapr.org/dcc. ----- Call for Conference Proceeding Papers Anyone interested in digital communications is invited to submit a paper for publication in the Conference Proceedings. Presentation at the conference is not required for publication. The primary purpose of the conference is to communicate ideas and techniques regarding digital communications. Papers written in an informal style are welcome, as well as those written to academic standards. If you know of someone who is doing great things with digital communications, be sure to tell them about this! Papers are due by August 9, 1999, and should be submitted to Maty Weinberg, ARRL, 225 Main Street, Newington, CT 06111, or via e-mail to lweinberg@arrl.org. The paper submission guidelines are available on-line (http://www.tapr.org/dcc). ----- International Co-Host PRUG (Packet Radio User Group of Japan) will be the International co- host for a second year running. PRUG will be hosting an informal social Friday evening before their seminar and symposium is held. Visit http://www.prug.or.jp for more information about the organization. ----- Full information on the conference and hotel information can be obtained by contacting Tucson Amateur Packet Radio, 8987-309 E. Tanque Verde Road #337, Tucson, AZ 85749-9399, phone 940-383-0000, fax 940-566-2544, e-mail tapr@tapr.org, browse www.tapr.org/dcc. Sincerely, Greg Jones, WD5IVD, TAPR Conference Chair Steve Stroh, N8GNJ, Conference Manager Dan Meredith, N7MRP, Local Host Liaison Keith Justice, KF7TP, Local Host Liaison Note: If you need conference handouts or flyers for ham club meetings, contact TAPR to get what you need! ----- Hotel Information Conference presentations, meetings, and seminars will be held at the Holiday Inn Select Airport. Special DCC rooms rates are $69/single and $79/double per night. When making reservations with the hotel, be sure to indicate you are attending the ARRL and TAPR DCC in order to get the discount. It is highly recommended that you book your room prior to arriving. A block of 75 rooms is reserved until August 22, 1999. After the 75 rooms are booked, rooms will only be available in nearby hotels, so be sure to book your rooms early! The hotel provides transportation to and from the Phoenix Sky Harbor International Airport. Please contact the hotel to arrange specific transportation needs. Holiday Inn Select Airport (conference hotel) 4300 E Washington Phoenix, AZ 850234 Phone 602-273-7778, fax 602-286-1109 ----- ---------------------------------------------------------------------------- Tucson Amateur Packet Radio 8987-309 E Tanque Verde Rd #337 * Tucson, Az * 85749-9399 ---------------------------------------------------------------------------- e-mail: tapr@tapr.org web: ftp: ftp.tapr.org phone: 940-383-0000 fax: 940-565-2544 ---------------------------------------------------------------------------- --- 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 Apr 30 20:16:11 1999 Received: from lists.tapr.org (lists.tapr.org [204.17.217.24]) by tapr.org (8.9.3/8.9.3/1.9) with SMTP id UAA16655 for ; Fri, 30 Apr 1999 20:16:10 -0500 (CDT) Message-Id: X-Sender: lawrence@mail.javanet.com Date: Fri, 30 Apr 1999 21:07:00 -0400 To: "TAPR Spread Spectrum Special Interest Group" From: Lawrence Gruber Subject: [ss] 900 Mhz. Yagi design article 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: <3.0.3.32.19990430210700.014d9270@mail.javanet.com> Sender: bounce-ss-6751@lists.tapr.org Precedence: bulk The new April issue of the British magazine, Elektor Electronics, has a nice design article for an eight element tapered yagi (6 directors) for 900 Mhz. (33.33 cm). The antenna length is 51.3 cm. And the gain is about 11 dB. Balun construction is also described (RG58U). ..that's Elektor, April, 1999. Volume 25 No. 276., pg. 22ff. ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ Larry (Lawrence) J. Gruber Medford, Massachusetts USA lawrence@javanet.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