From bounce-ss-6751@lists.tapr.org Tue Apr 11 07:22:07 2000 Received: from lists.tapr.org (lists.tapr.org [204.17.217.24]) by tapr.org (8.9.3/8.9.3/1.13) with SMTP id HAA11968 for ; Tue, 11 Apr 2000 07:22:06 -0500 (CDT) Message-ID: From: "Hast, Chuck" To: "TAPR Spread Spectrum Special Interest Group" Subject: [ss] Looking for Part 15 Solution Date: Tue, 11 Apr 2000 08:18:20 -0400 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: <0D7B0EF78F72D311B95F0008C7F3D0A065C921@DALLAS> Sender: bounce-ss-6751@lists.tapr.org Precedence: bulk Folks: I have had a question dropped on me, and figured that this was the best place to ask it. A customer of mine needs to finish several "last mile" data links these are for Motorola RD-Lap systems, seems the local telco no longer really understands how to do analogue lease lines, the customer has had a real time trying to get the telco (Bell South) to get these lines to work properly, the modems being used are UDS modems at 14k4 so it is not blazing speed. Anyhow, the customer is interested in replacing these lease lines with part 15 links, most of which would be 10 miles or less in length, I see some good information on stuff that is being done with some of the part 15 stuff. What we are thinking is something we can plug into the router at the office nearest the RD-Lap base station site and then run the data up to the RD-Lap site, come out of a small terminal server with the serial data stream to the RD-Lap base station controller, and thereby get rid of the lease line and the problems that it is causing in terms of lack of knowledge by the provider. The customer already has the RD-Lap RNC talking to a DSU/CSU from Atlanta to their Chattanooga office, at that office there is another DSU/CSU that talks to the UDS modem and then up the hill to the radio site, we want to eliminate that lease line up the hill, and go wireless. They are looking for something low cost to test with then if it works reasonably well they will spring for something probably more expensive. The lesson learned here is that the telcos appear to be loosing the expertise to handle analogue lines, that was told us directly by the installer who said he could do a digital line because it was "easy" He told us that the "old analogue guys" were almost gone and no one really was that familiar with those types of leased lines, go figure.. B-b --- 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 11 08:38:59 2000 Received: from lists.tapr.org (lists.tapr.org [204.17.217.24]) by tapr.org (8.9.3/8.9.3/1.13) with SMTP id IAA14310 for ; Tue, 11 Apr 2000 08:38:58 -0500 (CDT) Message-ID: X-Priority: 3 (Normal) Content-Type: text/plain; charset=us-ascii Content-Transfer-Encoding: 7bit MIME-Version: 1.0 In-Reply-To: Date: Tue, 11 Apr 2000 14:37:08 +0100 (BST) Reply-To: "TAPR Spread Spectrum Special Interest Group" Organization: Tobit Computer Co Ltd From: Dirk Koopman To: "TAPR Spread Spectrum Special Interest Group" Subject: [ss] RE: Looking for Part 15 Solution 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 On 11-Apr-2000 Hast, Chuck wrote: > Folks: > I have had a question dropped on me, and figured that this was > the best place to ask it. > > A customer of mine needs to finish several "last mile" data links > these are for Motorola RD-Lap systems, seems the local telco > no longer really understands how to do analogue lease lines, > the customer has had a real time trying to get the telco (Bell > South) to get these lines to work properly, the modems being > used are UDS modems at 14k4 so it is not blazing speed. Hum... I thought that in the US RD-LAP was generally run in 25Khz channels and at 19K2. > > Anyhow, the customer is interested in replacing these lease > lines with part 15 links, most of which would be 10 miles or > less in length, I see some good information on stuff that is being > done with some of the part 15 stuff. > > What we are thinking is something we can plug into the router > at the office nearest the RD-Lap base station site and then run > the data up to the RD-Lap site, come out of a small terminal server > with the serial data stream to the RD-Lap base station controller, > and thereby get rid of the lease line and the problems that it is > causing in terms of lack of knowledge by the provider. > > The customer already has the RD-Lap RNC talking to a DSU/CSU > from Atlanta to their Chattanooga office, at that office there is > another DSU/CSU that talks to the UDS modem and then up the > hill to the radio site, we want to eliminate that lease line up the > hill, and go wireless. > > They are looking for something low cost to test with then if it works > reasonably well they will spring for something probably more expensive. The trade off you have to make here is whether the reliability that you require can obtained from a radio system that has no protected sprectrum, is filling up exponentially with uncontrolled numbers of users and is subject to all the usual atmospheric effects that radio at these frequencies has or to bite the bullet and go with wire/fibre. I have a system out in the field that controls ambulances which has protected spectrum, telco installed radio links which is sufficiently unreliable to cause the customer to have considered suing said telco. That is supposed to be a digital over radio link solution (which suffered constant syncronisation problems [if anyone is interested]) - it has been recently fixed (finally). However, it still suffers from extreme weather effects - which no-one can do anything much about (but is a lot rarer). My experience suggests that the way forward is to avoid radio links like the plague if you want reliability. If all the telco can do is lay digital lines then why not shove in a 56/64Kb line on copper and stick a single port terminal server on each end and use that? > The lesson learned here is that the telcos appear to be loosing the > expertise to handle analogue lines, that was told us directly by the > installer who said he could do a digital line because it was "easy" > He told us that the "old analogue guys" were almost gone and no one > really was that familiar with those types of leased lines, go figure.. B-b He'll be telling you next that installing the local loop on a new analogue telephone is "difficult"! 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 11 12:41:38 2000 Received: from lists.tapr.org (lists.tapr.org [204.17.217.24]) by tapr.org (8.9.3/8.9.3/1.13) with SMTP id MAA21994 for ; Tue, 11 Apr 2000 12:41:37 -0500 (CDT) Message-ID: From: "Hast, Chuck" To: "TAPR Spread Spectrum Special Interest Group" Subject: [ss] RE: Looking for Part 15 Solution Date: Tue, 11 Apr 2000 13:37:36 -0400 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: <0D7B0EF78F72D311B95F0008C7F3D0A065C924@DALLAS> Sender: bounce-ss-6751@lists.tapr.org Precedence: bulk My comments below... > -----Original Message----- > From: Dirk Koopman [SMTP:djk@tobit.co.uk] > Sent: Tuesday, April 11, 2000 09:37 > To: TAPR Spread Spectrum Special Interest Group > Subject: [ss] RE: Looking for Part 15 Solution > > > On 11-Apr-2000 Hast, Chuck wrote: > [Hast, Chuck] cut out a chunk here... > > South) to get these lines to work properly, the modems being > > used are UDS modems at 14k4 so it is not blazing speed. > > Hum... I thought that in the US RD-LAP was generally run in 25Khz channels > and at 19K2. > [Hast, Chuck] Yes where they are still available the channels are 25khz and 19k2... This particular system is UHF and the above applies. The wireline links back to the RNC are 14k4 UDS modems. > > > > Anyhow, the customer is interested in replacing these lease > Cut, Cut... > > They are looking for something low cost to test with then if it works > > reasonably well they will spring for something probably more expensive. > > The trade off you have to make here is whether the reliability that you > require can obtained from a radio system that has no protected sprectrum, > is > filling up exponentially with uncontrolled numbers of users and is subject > to > all the usual atmospheric effects that radio at these frequencies has or > to > bite the bullet and go with wire/fibre. > Yes this is one of the questions, several of these sites are somewhat remote or in small towns, so I am not sure just how congested the part 15 spectrum is out in those areas (probably others with similar ideas though) > I have a system out in the field that controls ambulances which has > protected > spectrum, telco installed radio links which is sufficiently unreliable to > cause the customer to have considered suing said telco. That is supposed > to > be a digital over radio link solution (which suffered constant > syncronisation > problems [if anyone is interested]) - it has been recently fixed > (finally). > However, it still suffers from extreme weather effects - which no-one can > do > anything much about (but is a lot rarer). > > My experience suggests that the way forward is to avoid radio links like > the > plague if you want reliability. If all the telco can do is lay digital > lines > then why not shove in a 56/64Kb line on copper and stick a single port > terminal server on each end and use that? > That is actually what I told them I thought they should do, and be done with it, particularly given the comments from the telco guy as stated below. > > > > The lesson learned here is that the telcos appear to be loosing the > > expertise to handle analogue lines, that was told us directly by the > > installer who said he could do a digital line because it was "easy" > > > He told us that the "old analogue guys" were almost gone and no one > > really was that familiar with those types of leased lines, go figure.. > B-b > > He'll be telling you next that installing the local loop on a new > analogue telephone is "difficult"! > I started to ask him that question, but thought I would hold off, the customer had given him enough grief, see part of the problem was that said lease line in going from office to tower passed through two CO's and according to the telco guy each CO had a similar box on the end of each line for a total of 6 boxes, he said that each box had to be adjusted (I think setting up roll off or whatever) and that there was not that many people who knew how to set up that many of them in series. He said that the digital lines were easy to set up, but that he really was not that familiar with that type of equipment.. > > --- 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 11 12:49:39 2000 Received: from lists.tapr.org (lists.tapr.org [204.17.217.24]) by tapr.org (8.9.3/8.9.3/1.13) with SMTP id MAA22206 for ; Tue, 11 Apr 2000 12:49:36 -0500 (CDT) Message-ID: From: Tony Balga To: "TAPR Spread Spectrum Special Interest Group" Subject: [ss] RE: Looking for Part 15 Solution Date: Tue, 11 Apr 2000 12:54:15 -0500 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: <01C148251B54D31194240080C8F75F6AD64A@mail.hsbc.org> Sender: bounce-ss-6751@lists.tapr.org Precedence: bulk We have point to point eithernet radios that will go 20+ miles http://www.trillion21.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 11 13:17:58 2000 Received: from lists.tapr.org (lists.tapr.org [204.17.217.24]) by tapr.org (8.9.3/8.9.3/1.13) with SMTP id NAA23436 for ; Tue, 11 Apr 2000 13:17:54 -0500 (CDT) Errors-To: Message-ID: Date: Tue, 11 Apr 2000 14:06:13 -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: Looking for Part 15 Solution 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: <38F36995.C87DBA70@aerodata.net> Sender: bounce-ss-6751@lists.tapr.org Precedence: bulk "Hast, Chuck" wrote: > > South) to get these lines to work properly, the modems being > used are UDS modems at 14k4 so it is not blazing speed. > > Anyhow, the customer is interested in replacing these lease > lines with part 15 links, most of which would be 10 miles or > less in length, FreeWave http://www.freewave.com Basically looks like a long piece of cable, no routing, but if you just hooking together via landline modem anyways, thats what you want, right? 10 miles is a piece of cake if its LOS. I've used them up to 12 miles, and I know others that have gone farther then that. $700 if you ask for the OEM board, and act like your a OEM. Otherwise they are $1250 a side. You need two. I've used a comet verticle, Olde Antenna lab corner reflector and a directive systems loop yagi. FreeWave sells antennas also that are certified so you can stay fully part 15 compliant, if your worried about that. But don't underestimate the line of sight thing, real important. If you in a flatland, you'll need a high tower, which might make the project unrealistic. But if you can see it, you (almost always) will be able to work it with the FreeWaves. Good luck -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 Tue Apr 11 13:51:06 2000 Received: from lists.tapr.org (lists.tapr.org [204.17.217.24]) by tapr.org (8.9.3/8.9.3/1.13) with SMTP id NAA24501 for ; Tue, 11 Apr 2000 13:51:06 -0500 (CDT) Message-ID: From: "Hast, Chuck" To: "TAPR Spread Spectrum Special Interest Group" Subject: [ss] Re: Looking for Part 15 Solution Date: Tue, 11 Apr 2000 14:45:42 -0400 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: <0D7B0EF78F72D311B95F0008C7F3D0A065C926@DALLAS> Sender: bounce-ss-6751@lists.tapr.org Precedence: bulk Thank you Jeff, actually most of these sites are remote offices, the circuits from the RNC to the office are T1's. They have a CSU/DSU that they plug into and that talks to a T1 using a Ethernet connection, on the far end it is the same except that right now the go out of the CSU/DSU as a RS-232 connect to the UDS modem, if we go to wireless we could use wireless Ethernet type devices, and put the CSU/DSU up at the tower, exiting from it to the BSC. The solution below would most certainly work though, we would just replace the UDS modems with the Free Wave devices. The test site is in Chattanooga, the tower is up on Lookout Mountain and the office is in the valley. You can see the tower site from the roof of the office. > -----Original Message----- > From: Jeff King [SMTP:jeff@aerodata.net] > Sent: Tuesday, April 11, 2000 14:06 > To: TAPR Spread Spectrum Special Interest Group > Subject: [ss] Re: Looking for Part 15 Solution > > > > FreeWave http://www.freewave.com > > Basically looks like a long piece of cable, no routing, but if you just > hooking together via landline modem anyways, thats what you want, > right? > > 10 miles is a piece of cake if its LOS. I've used them up to 12 miles, > and I know others that have gone farther then that. > > $700 if you ask for the OEM board, and act like your a OEM. Otherwise > they are $1250 a side. You need two. > > I've used a comet verticle, Olde Antenna lab corner reflector and a > directive > systems loop yagi. FreeWave sells antennas also that are certified so > you can stay fully part 15 compliant, if your worried about that. > > But don't underestimate the line of sight thing, real important. If you in > a > flatland, you'll need a high tower, which might make the project > unrealistic. But if you can see it, you (almost always) will be able to > work it with the FreeWaves. > > Good luck > > > -Jeff wb8wka > > > > > --- > You are currently subscribed to ss as: wchast@utilpart.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 Apr 11 14:12:43 2000 Received: from lists.tapr.org (lists.tapr.org [204.17.217.24]) by tapr.org (8.9.3/8.9.3/1.13) with SMTP id OAA25516 for ; Tue, 11 Apr 2000 14:12:42 -0500 (CDT) Errors-To: Message-ID: Date: Tue, 11 Apr 2000 15:00:09 -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: Looking for Part 15 Solution 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: <38F37638.8465B319@aerodata.net> Sender: bounce-ss-6751@lists.tapr.org Precedence: bulk "Hast, Chuck" wrote: > They have a CSU/DSU that they plug into and that talks > to a T1 using a Ethernet connection, on the far end it is > the same except that right now the go out of the CSU/DSU > as a RS-232 connect to the UDS modem, if we go to > wireless we could use wireless Ethernet type devices, > and put the CSU/DSU up at the tower, exiting from it > to the BSC. Well, remember this. Typically the faster you go, the less range you get. The FreeWave over the air rate is actually 173kbaud, that way the can "kinda" simulate full duplex at 115kbaud. The serial rate on a FreeWave can be set from ~1200baud to 230kbaud (a hidden feature, hit '0' as the baud rate selection). I get about 10kbytes a second on a FTP using one of them. Now, I can go on and on on how the FreeWave is over priced, but thats what they charge. The have some substantial discounts if you buy in volume, but that doesn't help you. If you can actually SEE the site, then some of the 2.4ghz units might work well too. Just keep a tight antenna pattern if your in a urban area.. I think the FCC rules are more liberal on 2.4ghz also for ERP. Good luck. -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 Wed Apr 12 06:31:08 2000 Received: from lists.tapr.org (lists.tapr.org [204.17.217.24]) by tapr.org (8.9.3/8.9.3/1.13) with SMTP id GAA11513 for ; Wed, 12 Apr 2000 06:31:06 -0500 (CDT) Message-ID: From: "Hast, Chuck" To: "TAPR Spread Spectrum Special Interest Group" Subject: [ss] Re: Looking for Part 15 Solution Date: Wed, 12 Apr 2000 07:27:32 -0400 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: <0D7B0EF78F72D311B95F0008C7F3D0A065C927@DALLAS> Sender: bounce-ss-6751@lists.tapr.org Precedence: bulk As a bit more information, one thing I forgot, the data link between the RNC and the BSC is synchronous, so these devices if they are RS-232 must handle synch data rather than asynch... B-] Modem data rate is 14k4 (this is the data rate between RNC and BSC, the over the air data rate is 19k2, but there is overhead for error correction and other stuff that makes up the difference). The CSU/DSU and some terminal servers have no problem with this but so far what I have seen from the wireless RS-232 products is async data. The wireless Ethernet stuff looks better and better all the time, that will just plug right into the router that the T1 terminates into and out we go to the BSC at the tower, which will talk to the other end using another router/TS. --- 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 13 21:55:25 2000 Received: from lists.tapr.org (lists.tapr.org [204.17.217.24]) by tapr.org (8.9.3/8.9.3/1.13) with SMTP id VAA11396 for ; Thu, 13 Apr 2000 21:55:24 -0500 (CDT) Date: Thu, 13 Apr 2000 21:54:15 -0500 Message-Id: X-Sender: kb9mwr@yahoo.com (Unverified) Mime-Version: 1.0 Content-Type: text/plain; charset="us-ascii" To: "TAPR Spread Spectrum Special Interest Group" From: Steve Lampereur Subject: [ss] Re: Looking for Part 15 Solution 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: <200004140254.e3E2sF420928@faulkner.netnet.net> Sender: bounce-ss-6751@lists.tapr.org Precedence: bulk Nothing personal against the gentlemen who asked for input about part 15 wireless linking for his customers.. however may I suggest you check this list for help; http://isp-lists.isp-planet.com/isp-wireless/archives/ I'd like to read more about what hams are doing at higher power levels converting/using these units for part 97 use. Steve Lampereur, KB9MWR Low cost wireless network http://www.dct.com/~multiplx/wireless PS: please contact me if you have buildt your own amp for 2.4 GHz --- 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 14 05:14:50 2000 Received: from lists.tapr.org (lists.tapr.org [204.17.217.24]) by tapr.org (8.9.3/8.9.3/1.13) with SMTP id FAA10869 for ; Fri, 14 Apr 2000 05:14:50 -0500 (CDT) Date: Fri, 14 Apr 2000 12:15:40 +0300 (EEST) From: Anton Shepetko To: "TAPR Spread Spectrum Special Interest Group" Subject: [ss] (to administrator) re-subscribe 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, can you change my subscribed e-mail :Tosha@oberon.pfi.lt to Anton@boxer.impar.com, or tell me how can I do that. Thank you anyway, Anton. --- 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 15 22:17:47 2000 Received: from lists.tapr.org (lists.tapr.org [204.17.217.24]) by tapr.org (8.9.3/8.9.3/1.13) with SMTP id WAA07540 for ; Sat, 15 Apr 2000 22:17:47 -0500 (CDT) To: "TAPR Spread Spectrum Special Interest Group" Date: Sat, 15 Apr 2000 20:14:06 -0700 Subject: [ss] Simple Ultra Wide Band Radio ? Message-ID: MIME-Version: 1.0 Content-Type: text/plain Content-Transfer-Encoding: 7bit X-Juno-Line-Breaks: 0-2,4-5,7,9-10,13-14,18,22-23,25-27,31-32,37-38,44-47,49-55 X-Juno-Att: 0 X-Juno-RefParts: 0 From: tv@juno.com 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: <20000415.201525.-161485.1.tv@juno.com> Sender: bounce-ss-6751@lists.tapr.org Precedence: bulk Is there anyone on this list who has experimented with impulse radio ? After looking through the patents by Fullerton, McEwan, and other listed at: http://www.aetherwire.com/CDROM/General/numbers.html it seems to me that building a basic utra-wide-band impulse radio might be quite simple and inexpensive. Not nearly as exotic as some people seem to want to make it. An impulse transmitter can be as simple as a pulsed transistor driven by the proper train of pulses. McEwan has a patent for a fast MOSFET switch #5,332,938. Other design use a push-pull type circuit like an H-bridge. As far as receivers go, check out patent #5,345.471 by McEwan (an engineer who Livermore Labs), it shows several receivers made of op-amps with a simple diode detector. The receiver really just an integrator and and amplifier. The receiver works by adding (or subtracting) an incomming pulse train from the antenna to a locally generated pulse train that matches the transmitted pattern. The pattern could be a simple equally spaced pulse train, or a complex psuedo random pattern. An easy way to look up this patent (or others) is on the IBM patent database at: http://www.patents.ibm.com/details?&pn=US05345471__ To send digital data the transmitter shifts between one of two patterns or simply shifts the timing of the pattern slightly. The receiver would compare two corelated patterns using a comparator to recover the 0's and 1's. In many ways UWB radios are about as simple as tuned radio frequency receivers or even simpler, except for the pn-codes and corelator. This seems like something hams should be playing with. I am getting tired of waiting for something to be available commercially. I would like to try make something myself. Seems like you might be able to build an impulse radio for about $10 or $20 worth of parts. Maybe a PIC microcontroller chip could control the pulse train by momentarily "tweeking" the frequency of a master oscillator that runs a sequencer that could be something as simple as some XOR gates and a shift register. The PIC would somehow detect when things were in phase. I am no expert on SS radios. What do you experts think ? How about an UWB radio from common parts that a high school kid could build ? Thanks, Tim. WA6KJL --- You are currently subscribed to ss as: lyris.ss@tapr.org To unsubscribe send a blank email to leave-ss-6751T@lists.tapr.org From bounce-ss-6751@lists.tapr.org Sun Apr 16 11:21:36 2000 Received: from lists.tapr.org (lists.tapr.org [204.17.217.24]) by tapr.org (8.9.3/8.9.3/1.13) with SMTP id LAA14515 for ; Sun, 16 Apr 2000 11:21:34 -0500 (CDT) Message-ID: From: "Jeff Millar" To: "TAPR Spread Spectrum Special Interest Group" References: Subject: [ss] Re: Simple Ultra Wide Band Radio ? Date: Sun, 16 Apr 2000 12:14:08 -0400 MIME-Version: 1.0 Content-Type: text/plain; charset="Windows-1252" Content-Transfer-Encoding: 7bit X-Priority: 3 X-MSMail-Priority: Normal X-MimeOLE: Produced By Microsoft MimeOLE V5.00.2919.6600 List-Unsubscribe: List-Software: Lyris Server version 3.0 List-Subscribe: List-Owner: X-List-Host: Tucson Amateur Packet Radio Reply-To: "TAPR Spread Spectrum Special Interest Group" X-Message-Id: <000401bfa7be$ccd37c20$0201a8c0@home> Sender: bounce-ss-6751@lists.tapr.org Precedence: bulk The KK7B direct conversion (zero IF) receiver makes a fine UWB receiver, see http://www.bright.net/~kanga/kanga/kk7b.htm...although they don't know anything about the UWB nature of their kits. These receivers have a mixer at the front end that takes in RF, mixes it with the LO and generates audio. To use them as impulse receivers, simply use an impulse in place of the sine wave IF. "Simply" contains a host of fun issues. To understand how this works, think of the mixer in the time domain. Look at the schematic of minicircuits mixer, it consists of a diode ring and two transformers. The LO causes the polarity of the incoming signal to switch and appear on the IF port. An impulse on the input consists of a positive half cycle, a zero crossing, and a negative half cycle. If a matching impulse on the IF cause the polarity to switch just at the zero crossing of the incoming impulse, then the IF has a DC component proportional to the amplitude and phase of the incoming signals. Now pulse position modulate the transmitter impulse to slide the zero crossing around and the modulation appears on the IF and out to the speakers. I've done this and it works great. The practical problems arise when generating the impulse at the receiver. The pulse train needs a pseudo random position sequence to eliminate lines in the output spectrum. The receiver has to hunt through all the time between impulses to find and acquire the pulse train...equivalent to processing gain in spread spectrum sense. Probably best to use GPS time plus some knowledge of the path length to aid acquisition. The processing gain of this system becomes impulse BW/modulation BW. For example, a VHF UWB system has 100 MHz BW, and uses 10 KHz modulation resulting in 40 dB processing gain...that's a lot of hunting around during acquisition. With 100 Mhz BW, the impulses last for about 10 ns and modulation moves the impulses around by less than 5 ns. The 10 KHz modulation means a 10 ns impulse every 100 usec. My idea for a transmitter (never tried) is to use a TTL bus driver part. 74FCT244, for example, has <1 ns edge speed and eight 64 ma drivers. The output impedance is low, so matching to an antenna is not so efficient. but it's very simple. Suggest using it push pull, tying 4 output to one side of a bowtie antenna and 4 to the other side. Real impulses never look textbook because the antenna and other components resonate a bit. That's ok, just use a matching time domain wave shape at the receiver. UWB is probabaly not the best term for this technology. How about Time Domain Signals, Time Domain Rx, Time Domain Tx, etc? jeff wa1hco ----- Original Message ----- From: To: "TAPR Spread Spectrum Special Interest Group" Sent: Saturday, April 15, 2000 11:14 PM Subject: [ss] Simple Ultra Wide Band Radio ? > > Is there anyone on this list who has experimented with impulse radio ? > > After looking through the patents by Fullerton, McEwan, and other listed > at: > http://www.aetherwire.com/CDROM/General/numbers.html > it seems to me that building a basic utra-wide-band impulse radio might > be quite > simple and inexpensive. Not nearly as exotic as some people seem to want > to make it. > > An impulse transmitter can be as simple as a pulsed transistor driven by > the proper train of pulses. McEwan has a patent for a fast MOSFET switch > #5,332,938. Other design use a push-pull type circuit like an H-bridge. > > As far as receivers go, check out patent #5,345.471 by McEwan (an > engineer who Livermore Labs), it shows several receivers made of op-amps > with a simple diode detector. The receiver really just an integrator and > and amplifier. > The receiver works by adding (or subtracting) an incomming pulse train > from the antenna to a locally generated pulse train that matches the > transmitted pattern. The pattern could be a simple equally spaced pulse > train, or a complex psuedo random pattern. > > An easy way to look up this patent (or others) is on the IBM patent > database at: > http://www.patents.ibm.com/details?&pn=US05345471__ > > To send digital data the transmitter shifts between one of two patterns > or simply shifts the timing of the pattern slightly. The receiver would > compare two corelated patterns using a comparator to recover the 0's and > 1's. > > In many ways UWB radios are about as simple as tuned radio frequency > receivers or even simpler, except for the pn-codes and corelator. This > seems like something hams should be playing with. I am getting tired of > waiting for something to be available commercially. I would like to try > make something myself. > > Seems like you might be able to build an impulse radio for about $10 or > $20 worth of parts. Maybe a PIC microcontroller chip could control the > pulse train by momentarily "tweeking" the frequency of a master > oscillator that runs a sequencer that could be something as simple as > some XOR gates and a shift register. The PIC would somehow detect when > things were in phase. > > I am no expert on SS radios. What do you experts think ? > > How about an UWB radio from common parts that a high school kid could > build ? > > Thanks, Tim. WA6KJL > > > > > > --- > You are currently subscribed to ss as: JEFF@WA1HCO.MV.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 Sun Apr 16 13:21:11 2000 Received: from lists.tapr.org (lists.tapr.org [204.17.217.24]) by tapr.org (8.9.3/8.9.3/1.13) with SMTP id NAA18684 for ; Sun, 16 Apr 2000 13:21:09 -0500 (CDT) To: "TAPR Spread Spectrum Special Interest Group" Cc: jeff@wa1hco.mv.com Date: Sun, 16 Apr 2000 11:16:24 -0700 Subject: [ss] Re: Simple Ultra Wide Band Radio ? Message-ID: MIME-Version: 1.0 Content-Type: text/plain Content-Transfer-Encoding: 7bit X-Juno-Line-Breaks: 0-1,3,5,10-11,18-19,21-25 X-Juno-Att: 0 X-Juno-RefParts: 0 From: tv@juno.com 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: <20000416.111625.-335681.0.tv@juno.com> Sender: bounce-ss-6751@lists.tapr.org Precedence: bulk Hi Jeff, Thanks you for the great ideas. Looks like the R1 receiver would be a great way to go for UWB experiments. I think I will order one and play around with it. Probably would work better than the circuits in patent #5345471 which use a single diode mixer, but I want to try the simple op-amp circuit also. But since you had success with R-1 direct conversion receiver, I would like to try to duplicate what you did first. If you don't mind, could you send more details of your test with R-1 ? I like your idea of using the 74FCT244 for the transmitter. Seems like the PN sequence could be generated by a $3 PIC microcontroller like the common 16F84. Running at 10 MHz and using a simple sequence of bit set and bit clear instructions (BSF/BCF) it could generate 2.5 million bit outputs per second (not pulses, transitions from high-to-low or low-to-high). Would that be fast enough to generate the pseudo random sequence ? Just to test the idea, could you just use a simple pulse train from a function generator ? Tim --- 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 Apr 16 15:33:09 2000 Received: from lists.tapr.org (lists.tapr.org [204.17.217.24]) by tapr.org (8.9.3/8.9.3/1.13) with SMTP id PAA22211 for ; Sun, 16 Apr 2000 15:33:08 -0500 (CDT) Message-ID: From: "Jeff Millar" To: "TAPR Spread Spectrum Special Interest Group" References: Subject: [ss] Re: Simple Ultra Wide Band Radio ? Date: Sun, 16 Apr 2000 16:28:01 -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 V5.00.2919.6600 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: <000a01bfa7e2$44654c00$0201a8c0@home> Sender: bounce-ss-6751@lists.tapr.org Precedence: bulk We used an impulse transmitter from a ground penetrating radar. It consisted of an exciter/amplifier driving a resistively loaded bowtie antenna (loaded to minimize ringing). We simply fed the exciter pulse via cable to the LO input of the KK7B board...probably a predecessor to the R1. The pulse operated at about 1 GHz with hundreds of MHz of BW. Modulation shifted the pulse position about 100-200 ps. The transmitter used a pulse rep rate of about 1 MHz and resulting audio quality seemed very hi-fi. Signals across the room seem very strong...never attempted any kind of range measurement...too much complexity with the acquisition... the main goal was radars anyway. A simple pulse train, without pseudo random will work fine. The rep rate needs to be enough to meet nyquist for the modulation bandwidth. Increasing the rep rate increases transmitted power and allows for integration of the output. Let's say you transmit a 100 KHz square wave with sub-ns edge transitions, You can use a square wave to feed the bowtie dipole directly, The DC and low frequency components of the the time between transitions will not propagate. At the reciever, you want to use a copy of the 100 KHz square wave, but you can't allow the mixer to see the DC between transitions because it will let antenna noise through the mixer to the IF. Think of it as time selectivity instead of frequency selectivity. So run the 100 KHz through a high pass filter to capture just the edge transistion. Match the filter cutoff to the bowtie frequency. jeff wa1hco ----- Original Message ----- From: To: "TAPR Spread Spectrum Special Interest Group" Cc: Sent: Sunday, April 16, 2000 2:16 PM Subject: [ss] Re: Simple Ultra Wide Band Radio ? > Hi Jeff, > > Thanks you for the great ideas. Looks like the R1 receiver would be a > great way to go > for UWB experiments. I think I will order one and play around with it. > Probably would work better than the > circuits in patent #5345471 which use a single diode mixer, but I want to > try the simple op-amp circuit also. But since you had success with R-1 > direct conversion receiver, I would like to try to duplicate what you did > first. If you don't mind, could you send more details of your test with > R-1 ? > > I like your idea of using the 74FCT244 for the transmitter. Seems like > the PN sequence could be generated by a $3 PIC microcontroller like the > common 16F84. Running at 10 MHz and using a simple sequence of bit set > and bit clear instructions (BSF/BCF) it could generate 2.5 million bit > outputs per second (not pulses, transitions from high-to-low or > low-to-high). Would that be fast enough to generate the pseudo random > sequence ? > > Just to test the idea, could you just use a simple pulse train from a > function generator ? > > Tim > > > > --- > You are currently subscribed to ss as: JEFF@WA1HCO.MV.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 Sun Apr 16 20:05:42 2000 Received: from lists.tapr.org (lists.tapr.org [204.17.217.24]) by tapr.org (8.9.3/8.9.3/1.13) with SMTP id UAA29972 for ; Sun, 16 Apr 2000 20:05:41 -0500 (CDT) From: N2HDW@aol.com Message-ID: Date: Sun, 16 Apr 2000 21:04:02 EDT Subject: [ss] Re: Looking for Part 15 Solution To: "TAPR Spread Spectrum Special Interest Group" 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: <1e.3fd8e33.262bbd02@aol.com> Sender: bounce-ss-6751@lists.tapr.org Precedence: bulk In a message dated 4/13/00 10:55:46 PM Eastern Daylight Time, kb9mwr@yahoo.com writes: Hello Steve, I am also interested in hearing more about hams using part 15 hardware as you said, converting/using these units for part 97 use. Barry Groupp N2HDW --- 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 Apr 16 23:26:58 2000 Received: from lists.tapr.org (lists.tapr.org [204.17.217.24]) by tapr.org (8.9.3/8.9.3/1.13) with SMTP id XAA05577 for ; Sun, 16 Apr 2000 23:26:57 -0500 (CDT) To: "TAPR Spread Spectrum Special Interest Group" Cc: jeff@wa1hco.mv.com Date: Sun, 16 Apr 2000 21:23:46 -0700 Subject: [ss] Re: Simple Ultra Wide Band Radio ? Message-ID: MIME-Version: 1.0 Content-Type: text/plain Content-Transfer-Encoding: 7bit X-Juno-Line-Breaks: 0-11,13-15,18-22 X-Juno-Att: 0 X-Juno-RefParts: 0 From: tv@juno.com 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: <20000416.212346.-383323.0.tv@juno.com> Sender: bounce-ss-6751@lists.tapr.org Precedence: bulk Hi Jeff. Thanks for more great ideas. I am going to give this a try. >At the reciever, you want to use a copy of the 100 KHz square >wave, but you can't allow the mixer to see the DC between transitions >because it will let antenna noise through the mixer to the IF. Would a small DC blocking capacitor serve this function ? > Think of it as >time selectivity instead of frequency selectivity. So run the 100 KHz >through a high pass filter to capture just the edge transistion. Match the filter >cutoff to the bowtie frequency. Had a thought, could the high pass filter somehow be another bowtie dipole emitting a week version of the local PN sequence for the receiver ? Otherwise what would you suggest for the highpass filter ? Thanks, Tim --- 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 17 00:18:05 2000 Received: from lists.tapr.org (lists.tapr.org [204.17.217.24]) by tapr.org (8.9.3/8.9.3/1.13) with SMTP id AAA14968 for ; Mon, 17 Apr 2000 00:18:04 -0500 (CDT) Message-ID: From: "Jeff Millar" To: "TAPR Spread Spectrum Special Interest Group" References: <20000416.212346.-383323.0.tv@juno.com> Subject: [ss] Re: Simple Ultra Wide Band Radio ? Date: Mon, 17 Apr 2000 01:10:33 -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 V5.00.2919.6600 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: <001601bfa82b$43a7e540$0201a8c0@home> Sender: bounce-ss-6751@lists.tapr.org Precedence: bulk Blocking cap would be good, 6 pf is 50 ohms at 500 MHz, the mixer looks like 50 ohms, so it's -6 dB at 500 MHz. Something in that range would be good. The uncertainties include bowtie size and TTL edge speed. Almost anything will work, getting max range takes some tweaking. Scale the cap to suit the size of your antenna. Using a local bowtie at the rx creates a time domain matched filter, thus matching the ringing...might gain a couple of dB. Generally, tranmitters avoid ringing because it generates a line in the spectrum. ----- Original Message ----- From: To: Cc: Sent: Monday, April 17, 2000 12:23 AM Subject: Re: [ss] Re: Simple Ultra Wide Band Radio ? > Hi Jeff. > > Thanks for more great ideas. I am going to give this a try. > > >At the reciever, you want to use a copy of the 100 KHz square > >wave, but you can't allow the mixer to see the DC between transitions > >because it will let antenna noise through the mixer to the IF. > > Would a small DC blocking capacitor serve this function ? > > > Think of it as > >time selectivity instead of frequency selectivity. So run the 100 KHz > >through a high pass filter to capture just the edge transistion. Match > the filter > >cutoff to the bowtie frequency. > > Had a thought, could the high pass filter somehow be another bowtie > dipole emitting a week version of the local PN sequence for the receiver > ? > > Otherwise what would you suggest for the highpass filter ? > > Thanks, Tim > --- 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 19 11:47:01 2000 Received: from lists.tapr.org (lists.tapr.org [204.17.217.24]) by tapr.org (8.9.3/8.9.3/1.13) with SMTP id LAA11290 for ; Wed, 19 Apr 2000 11:47:01 -0500 (CDT) From: Jake Brodsky To: "TAPR Spread Spectrum Special Interest Group" Subject: [ss] Re: Simple Ultra Wide Band Radio ? Date: Wed, 19 Apr 2000 12:40:29 -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 LAA11290 On Sun, 16 Apr 2000 11:16:24 -0700, you wrote: >Thanks you for the great ideas. Looks like the R1 receiver would be a >great way to go >for UWB experiments. I think I will order one and play around with it. >Probably would work better than the >circuits in patent #5345471 which use a single diode mixer, but I want to >try the simple op-amp circuit also. But since you had success with R-1 >direct conversion receiver, I would like to try to duplicate what you did >first. If you don't mind, could you send more details of your test with >R-1 ? The R-1 might not be appropriate unless you are able to derive pulse timing from another source. The R-2 is an I/Q direct conversion SSB receiver. Yes, the diplexer is almost identical to the R-1. The advantage to having I and Q channels is that you can tack a simple costas loop on the tail end of the R-2 which can keep you synchronized. I was working an a Direct sequence version of this very idea a couple years ago. And then I had kids. No more time for that ;-) >I like your idea of using the 74FCT244 for the transmitter. Seems like >the PN sequence could be generated by a $3 PIC microcontroller like the >common 16F84. Running at 10 MHz and using a simple sequence of bit set >and bit clear instructions (BSF/BCF) it could generate 2.5 million bit >outputs per second (not pulses, transitions from high-to-low or >low-to-high). Would that be fast enough to generate the pseudo random >sequence ? Depends on what you want to use for modulation... For simplicity, I suggest the Mini-R2. The diplexer is wider and it's simpler. 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 Wed Apr 19 22:18:47 2000 Received: from lists.tapr.org (lists.tapr.org [204.17.217.24]) by tapr.org (8.9.3/8.9.3/1.13) with SMTP id WAA01388 for ; Wed, 19 Apr 2000 22:18:46 -0500 (CDT) Organization: Stroh Publications Message-Id: X-Sender: (Unverified) Date: Wed, 19 Apr 2000 19:16:55 -0700 To: "TAPR Spread Spectrum Special Interest Group" From: Steve Stroh Subject: [ss] TAPR SS Radio MAC address Mime-Version: 1.0 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: <4.3.1.2.20000419191558.00dde7b0@> Sender: bounce-ss-6751@lists.tapr.org Precedence: bulk Has TAPR applied to the IEEE to get their own Organizational Unique Identifier (OUI) of the Ethernet MAC address for the TAPR Spread Spectrum radio? If not, TAPR will need to, won't they (since the SSR will be a unique Ethernet device)? If so, could it be opened to Amateur Radio in general, and perhaps add some "experimental" addresses? We're working on a project in the Seattle area that looks like it will need a OUI, and we'd prefer to do it in a valid manner. Downside is that to get an OUI from the IEEE is $1200 US - a bit more than our current budget. Thanks, Steve Stroh N8GNJ -- Steve Stroh steve@strohpub.com Woodinville, Washington USA Learn, Share, Grow, and Enjoy! --- 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 19 22:26:41 2000 Received: from lists.tapr.org (lists.tapr.org [204.17.217.24]) by tapr.org (8.9.3/8.9.3/1.13) with SMTP id WAA01557 for ; Wed, 19 Apr 2000 22:26:40 -0500 (CDT) Message-ID: Date: Wed, 19 Apr 2000 22:19:26 -0500 From: Jake Janovetz To: "TAPR Spread Spectrum Special Interest Group" Subject: [ss] Re: TAPR SS Radio MAC address References: Mime-Version: 1.0 Content-Type: text/plain; charset=us-ascii In-Reply-To: ; from Steve Stroh on Wed, Apr 19, 2000 at 07:16:55PM -0700 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: <20000419221926.A326@tempest.ece.uiuc.edu> Sender: bounce-ss-6751@lists.tapr.org Precedence: bulk You might have some luck talking someone at a small company into donating a subsection of their address space. They allocate 2^24 addresses per company which is a lot. Some time ago, someone on comp.embedded was giving out groups of 256 addresses to interested hobbyists. I got one of those. Cheers, Jake On Wed, Apr 19, 2000 at 07:16:55PM -0700, Steve Stroh wrote: > > Has TAPR applied to the IEEE to get their own Organizational Unique > Identifier (OUI) of the Ethernet MAC address for the TAPR Spread Spectrum > radio? > > If not, TAPR will need to, won't they (since the SSR will be a unique > Ethernet device)? > > If so, could it be opened to Amateur Radio in general, and perhaps add some > "experimental" addresses? > > We're working on a project in the Seattle area that looks like it will need > a OUI, and we'd prefer to do it in a valid manner. Downside is that to get > an OUI from the IEEE is $1200 US - a bit more than our current budget. > > Thanks, > > Steve Stroh N8GNJ > > -- > Steve Stroh steve@strohpub.com Woodinville, Washington USA > Learn, Share, Grow, and Enjoy! > > > --- > 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 | How can it be that mathematics, being after all a University of Illinois | product of human thought independent of experience, | is so admirably adapted to the objects of reality? PP-ASEL | - Albert Einstein Disclaimer: The policies of this University certainly do not reflect my own opinions, objectives, or agenda. --- 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 19 22:49:45 2000 Received: from lists.tapr.org (lists.tapr.org [204.17.217.24]) by tapr.org (8.9.3/8.9.3/1.13) with SMTP id WAA01954 for ; Wed, 19 Apr 2000 22:49:45 -0500 (CDT) Mime-Version: 1.0 Content-Type: text/plain; charset="us-ascii" Message-Id: Date: Wed, 19 Apr 2000 22:46:20 -0500 To: "TAPR Spread Spectrum Special Interest Group" From: Greg Jones Subject: [ss] Re: TAPR SS Radio MAC address 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 We will not be appyling for OUI address block. We are using a part from Dallas Semiconductor that has that as part of the part function. Thus, we are buying a number that is under their block. Cheers - Greg >Has TAPR applied to the IEEE to get their own Organizational Unique >Identifier (OUI) of the Ethernet MAC address for the TAPR Spread Spectrum >radio? > >If not, TAPR will need to, won't they (since the SSR will be a unique >Ethernet device)? > >If so, could it be opened to Amateur Radio in general, and perhaps add some >"experimental" addresses? > >We're working on a project in the Seattle area that looks like it will need >a OUI, and we'd prefer to do it in a valid manner. Downside is that to get >an OUI from the IEEE is $1200 US - a bit more than our current budget. > >Thanks, > >Steve Stroh N8GNJ ----- 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 19 22:56:48 2000 Received: from lists.tapr.org (lists.tapr.org [204.17.217.24]) by tapr.org (8.9.3/8.9.3/1.13) with SMTP id WAA02130 for ; Wed, 19 Apr 2000 22:56:47 -0500 (CDT) Mime-Version: 1.0 Content-Type: text/plain; charset="us-ascii" Message-Id: Date: Wed, 19 Apr 2000 22:49:41 -0500 To: "TAPR Spread Spectrum Special Interest Group" From: Greg Jones Subject: [ss] UPdate on things 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 Steve L is fabing another RF board so that we have an extra one in Dallas for Bob to work on PIC code. Any more on the RF board John S ? Also, the digital board is back and Steve L will be building one of those up. Very good news. Greg ----- 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 Thu Apr 20 00:42:09 2000 Received: from lists.tapr.org (lists.tapr.org [204.17.217.24]) by tapr.org (8.9.3/8.9.3/1.13) with SMTP id AAA12838 for ; Thu, 20 Apr 2000 00:42:09 -0500 (CDT) Date: Thu, 20 Apr 2000 12:55:14 +0700 (JVT) From: Sigit To: "TAPR Spread Spectrum Special Interest Group" Subject: [ss] Looking for VCXO 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 Dear All, I have problem that I could not solve until now. I want to build spread spectrum, but dedicated for experiment only. There is no high frequency carrier. I will use frequency arround 16.384 kHz for carrier and PN clock. Ofcourse, the data clock will be as low as 100 Hz. For generating that clock I will use 32.768 kHz crystal. The methode that I will use is DLL (Delay Lock Loop). We know that in DLL methode we need VCXO (Voltage Control Crystal Oscillator). That is my problem. I still could build VCXO using that frequency. Anybody help me ? Thank you very much. Regards, SIGT --- 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 20 23:43:08 2000 Received: from lists.tapr.org (lists.tapr.org [204.17.217.24]) by tapr.org (8.9.3/8.9.3/1.13) with SMTP id XAA01431 for ; Thu, 20 Apr 2000 23:43:08 -0500 (CDT) To: "TAPR Spread Spectrum Special Interest Group" Cc: frussle@erols.com Date: Thu, 20 Apr 2000 21:40:59 -0700 Subject: [ss] Re: Simple Ultra Wide Band Radio ? Message-ID: MIME-Version: 1.0 Content-Type: text/plain Content-Transfer-Encoding: 7bit X-Juno-Line-Breaks: 0-9,11,13-15,17-18,21-24 X-Juno-Att: 0 X-Juno-RefParts: 0 From: tv@juno.com 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: <20000420.214059.-364809.0.tv@juno.com> Sender: bounce-ss-6751@lists.tapr.org Precedence: bulk >On Wed, 19 Apr 2000 you wrote >The R-1 might not be appropriate unless you are able to derive pulse >timing from another source. The R-2 is an I/Q direct conversion SSB >receiver. Yes, the diplexer is almost identical to the R-1. The >advantage to having I and Q channels is that you can tack a simple >costas loop on the tail end of the R-2 which can keep you >synchronized. I had to do a little research on the very clever Costa loop. Great idea. Using the Costa loop a microcontroller generated psuedo random (PN) pulse train for the receiver local mixer signal should be able to be maintained by slightly varying the clock frequency of the microcontroller. Does that seem reasonable ? The biggest problem seem to be matching up the local PN pulse train with the transmitted signal. Hunting for it could take a while. There must be more hams out there who have tinkered with this. There needs to be more sharing of ideas. Why let the professional engineers have all the fun ! Tim --- 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 21 17:54:49 2000 Received: from lists.tapr.org (lists.tapr.org [204.17.217.24]) by tapr.org (8.9.3/8.9.3/1.13) with SMTP id RAA21075 for ; Fri, 21 Apr 2000 17:54:46 -0500 (CDT) Date: Fri, 21 Apr 2000 17:50:26 Subject: [ss] FHSS Radio To: "TAPR Spread Spectrum Special Interest Group" From: "stewart teaze" 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" Sender: bounce-ss-6751@lists.tapr.org Message-Id: Precedence: bulk I'm wondering if there is anyway I can help out on this project. I'm a Systems/Software Engineer for General Atomics Aeronautical Systems where I'm currently working on UAV(Unmanned Air Vehicle, aka Remote Control Aircraft) applications in San Diego, CA. I have been working on UAVs for 10 years on the Hunter/Predator/Prowler/Gnat systems - which includes a lot of work with synchronous serial communication drivers and TCP/IP communications applications. I have 20 years experience in the Industry, which includes extensive integration and test experience. In the '80s I did a lot of assembly language programming, and I am interested in PIC-based development. Is there any way that I could help out with I&T or beta-testing on initial units? Stewart Teaze N0MHS --- 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 21 20:29:56 2000 Received: from lists.tapr.org (lists.tapr.org [204.17.217.24]) by tapr.org (8.9.3/8.9.3/1.13) with SMTP id UAA26175 for ; Fri, 21 Apr 2000 20:29:55 -0500 (CDT) Date: Fri, 21 Apr 2000 21:27:20 -0400 (EDT) From: Jim Ussailis Subject: [ss] Re: ss digest: April 20, 2000 To: "TAPR Spread Spectrum Special Interest Group" cc: ss digest recipients 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 Two items: 1. Is a reply message an appropiate method of using this forum? 2. I am almost into the lock-up problem on a 900 MHz band DS link. I keep asking why receiver lock-up is so difficult. Why not wend a preamble, which has a gap in it. The receiver "sees" the gap, and then knows after the remaining preamble is sent, the code starts. Of course, my system has only one P/N code. What am I overlooking here? Jim Ussailis, W1EQO ussailis@shaysnet.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 Fri Apr 21 20:58:07 2000 Received: from lists.tapr.org (lists.tapr.org [204.17.217.24]) by tapr.org (8.9.3/8.9.3/1.13) with SMTP id UAA26974 for ; Fri, 21 Apr 2000 20:58:06 -0500 (CDT) Message-Id: X-Sender: kn6td@mail.clubnet.net Date: Fri, 21 Apr 2000 18:52:06 -0700 To: "TAPR Spread Spectrum Special Interest Group" From: Derek Lassen Subject: [ss] Re: ss digest: April 20, 2000 In-Reply-To: References: Mime-Version: 1.0 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: <4.2.0.58.20000421184850.00b9fe30@mail.clubnet.net> Sender: bounce-ss-6751@lists.tapr.org Precedence: bulk re 1) : Reply is good. But trim it of stuff not relevant to follow the thread. re 2): How do you lock onto the preamble? The whole point of SS is processing gain. At 09:27 PM 4/21/00 -0400, you wrote: >Two items: > >1. Is a reply message an appropiate method of using this forum? > >2. I am almost into the lock-up problem on a 900 MHz band DS link. I keep >asking why receiver lock-up is so difficult. Why not wend a preamble, >which has a gap in it. The receiver "sees" the gap, and then knows after >the remaining preamble is sent, the code starts. > >Of course, my system has only one P/N code. > >What am I overlooking here? > >Jim Ussailis, W1EQO > >ussailis@shaysnet.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 Fri Apr 21 22:19:28 2000 Received: from lists.tapr.org (lists.tapr.org [204.17.217.24]) by tapr.org (8.9.3/8.9.3/1.13) with SMTP id WAA29376 for ; Fri, 21 Apr 2000 22:19:28 -0500 (CDT) From: Jake Brodsky To: "TAPR Spread Spectrum Special Interest Group" Subject: [ss] Re: Simple Ultra Wide Band Radio ? Date: Fri, 21 Apr 2000 23:12:11 -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: <1o52gs0001g0dv46i2i44jurc24aodm490@4ax.com> 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 WAA29376 On Thu, 20 Apr 2000 21:40:59 -0700, you wrote: >I had to do a little research on the very clever Costa loop. Great idea. > >Using the Costa loop a microcontroller generated psuedo random (PN) pulse >train for the >receiver local mixer signal should be able to be maintained by slightly >varying the clock frequency of the microcontroller. >Does that seem reasonable ? Sure, as long as the rate of PN phase variation from the transmitter at the other end doesn't exceed the phase slewing ability at the receiver, you should be fine. Tinkering with the clock ought to do just fine. In fact, you may want to slow the clock up to some preset so that you can advance through the PN codes until you acquire the signal. >The biggest problem seem to be matching up the local PN pulse train with >the transmitted signal. Hunting for it could take a while. Many DSSS radios when unlocked use a preset faster or slower PN rate which will allow for PN lockup when the two codes match. Assuming the PN sequence isn't terribly long, lockup time should be reasonable. That's why we used the older 193 bit PN sequence from the old regulations (described in the SS handbook from ARRL). It was long enough to spread, and short enough to acquire rapidly. >There must be more hams out there who have tinkered with this. There >needs to be more sharing of ideas. Why let the professional engineers >have all the fun ! I agree. 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 Sun Apr 23 18:05:00 2000 Received: from lists.tapr.org (lists.tapr.org [204.17.217.24]) by tapr.org (8.9.3/8.9.3/1.13) with SMTP id SAA05561 for ; Sun, 23 Apr 2000 18:04:59 -0500 (CDT) From: ela97pg@sheffield.ac.uk To: "TAPR Spread Spectrum Special Interest Group" Date: Sun, 23 Apr 2000 19:45:35 +0300 MIME-Version: 1.0 Content-type: Multipart/Mixed; boundary=Message-Boundary-9012 Subject: [ss] Re: Looking for VCXO Priority: normal References: In-reply-to: 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 --Message-Boundary-9012 Content-type: text/plain; charset=US-ASCII Content-transfer-encoding: 7BIT Content-description: Mail message body Yes I could help you... I send you a cct diagram for a VCXO built and tested. It works perfectly... Since your crystal is at 32.768 KHz and you wanna play at 16.384 you just add a d-type flip flop configured as a frequency divider (/2) Ok good luck... P.S. I can reconfigure it in order to give you rapid acquisition just by adding a transitor switch that switches the clock from a frequency offset providing you the abbility to slide the code against the received code signal. When you finally synchronise them the switch will make your VCXO go back at the frequency were it should be. It took me about 3 secs to synchronise them and extract the data using a 255 chip code.. Good luck, I have mastered D.S. S.S now, so anything you need tell me... By the way are you a student? Let me know... --- 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 Apr 23 18:17:26 2000 Received: from lists.tapr.org (lists.tapr.org [204.17.217.24]) by tapr.org (8.9.3/8.9.3/1.13) with SMTP id SAA06130 for ; Sun, 23 Apr 2000 18:17:23 -0500 (CDT) From: ela97pg@sheffield.ac.uk To: "TAPR Spread Spectrum Special Interest Group" Date: Sun, 23 Apr 2000 19:50:46 +0300 MIME-Version: 1.0 Content-type: Multipart/Mixed; boundary=Message-Boundary-7191 Subject: [ss] Re: Looking for VCXO Priority: normal References: In-reply-to: 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 --Message-Boundary-7191 Content-type: text/plain; charset=US-ASCII Content-transfer-encoding: 7BIT Content-description: Mail message body Yes I could help you... I send you a cct diagram for a VCXO built and tested. It works perfectly... Since your crystal is at 32.768 KHz and you wanna play at 16.384 you just add a d-type flip flop configured as a frequency divider (/2) Ok good luck... P.S. I can reconfigure it in order to give you rapid acquisition just by adding a transitor switch that switches the clock from a frequency offset providing you the abbility to slide the code against the received code signal. When you finally synchronise them the switch will make your VCXO go back at the frequency were it should be. It took me about 3 secs to synchronise them and extract the data using a 255 chip code.. Good luck, I have mastered D.S. S.S now, so anything you need tell me... By the way are you a student? Let me know... --Message-Boundary-7191 Content-type: text/plain; charset=US-ASCII Content-disposition: inline Content-description: Attachment information. The following section of this message contains a file attachment prepared for transmission using the Internet MIME message format. If you are using Pegasus Mail, or any another MIME-compliant system, you should be able to save it or view it from within your mailer. If you cannot, please ask your system administrator for assistance. ---- File information ----------- File: YOURVCXO.zip Date: 23 Apr 2000, 19:34 Size: 9643 bytes. 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leave-ss-6751T@lists.tapr.org From bounce-ss-6751@lists.tapr.org Fri Apr 28 09:38:02 2000 Received: from lists.tapr.org (lists.tapr.org [204.17.217.24]) by tapr.org (8.9.3/8.9.3/1.13) with SMTP id JAA05796 for ; Fri, 28 Apr 2000 09:38:01 -0500 (CDT) From: "Rob Wittner" To: "TAPR Spread Spectrum Special Interest Group" Subject: [ss] Suggestions? Date: Fri, 28 Apr 2000 10:36:17 -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 In-Reply-To: X-MimeOLE: Produced By Microsoft MimeOLE V5.00.2314.1300 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 Does anyone know if there is a PCI or ISA card made that will accept a 16-bit PCMCIA card in order for a desktop machine to use a PCMCIA 802.11 card? I know I've seen one of these before, and the card manufacturer (3Com) shows one on their web site, but they deny its existence. (Figures.) Any ideas? Thanks in advance, -Rob KZ5RW --- 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 28 10:03:11 2000 Received: from lists.tapr.org (lists.tapr.org [204.17.217.24]) by tapr.org (8.9.3/8.9.3/1.13) with SMTP id KAA06586 for ; Fri, 28 Apr 2000 10:03:10 -0500 (CDT) Sender: bounce-ss-6751@lists.tapr.org Message-ID: Date: Fri, 28 Apr 2000 09:58:24 -0500 From: Gerry Creager N5JXS 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: Suggestions? 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: <3909A710.B75DB0D2@cs.tamu.edu> Precedence: bulk Rob Wittner wrote: > > Does anyone know if there is a PCI or ISA card made that will accept a > 16-bit PCMCIA card in order for a desktop machine to use a PCMCIA 802.11 > card? I know I've seen one of these before, and the card manufacturer > (3Com) shows one on their web site, but they deny its existence. (Figures.) I'll check at the PX this weekend, I've seen, over there, a combo 3.5/PC card combo. Don't know about mfgr or interface off hand. -- Gerry Creager "Due to the confusion from too many genres of music, we have decided to put both country music and rap music into the genre of Crap music." --- 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 28 10:18:00 2000 Received: from lists.tapr.org (lists.tapr.org [204.17.217.24]) by tapr.org (8.9.3/8.9.3/1.13) with SMTP id KAA07323 for ; Fri, 28 Apr 2000 10:17:58 -0500 (CDT) From: adesjard@cme.com Reply-To: "TAPR Spread Spectrum Special Interest Group" Sender: bounce-ss-6751@lists.tapr.org To: "TAPR Spread Spectrum Special Interest Group" Subject: [ss] Re: Suggestions? Date: Fri, 28 Apr 2000 10:15:46 -0500 Message-ID: MIME-Version: 1.0 Content-Type: multipart/mixed; boundary="----=_NextPart_000_0000_01BFB0FA.ADB24FC0" X-Priority: 3 (Normal) X-MSMail-Priority: Normal X-MimeOLE: Produced By Microsoft MimeOLE V4.72.2106.4 In-Reply-To: <27ACC5D88FCAD311991700805FEA31D60662B6@sntsex01-bk.merc.chicago.cme.com> 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: <27ACC5D88FCAD311991700805FEA31D6070AD5@sntsex01-bk.merc.chicago.cme.com> Precedence: bulk This is a multi-part message in MIME format. ------=_NextPart_000_0000_01BFB0FA.ADB24FC0 Content-Type: text/plain; charset="iso-8859-1" Content-Transfer-Encoding: 7bit Rob, Take a look at SanDisk, they make a combo PCMCIA / CF desktop PC adapter, and I presently use on with an Aironet DS4800 PC card. Alan DesJardins N5VXL RF Network Engineer MIS Systems Chicago Mercantile Exchange 30 South Wacker Drive Chicago, IL 60606 (312)338-2853 adesjard@cme.com -----Original Message----- From: bounce-ss-12965@lists.tapr.org [mailto:bounce-ss-12965@lists.tapr.org]On Behalf Of Gerry Creager N5JXS Sent: Friday, April 28, 2000 9:58 AM To: TAPR Spread Spectrum Special Interest Group Subject: [ss] Re: Suggestions? Rob Wittner wrote: > > Does anyone know if there is a PCI or ISA card made that will accept a > 16-bit PCMCIA card in order for a desktop machine to use a PCMCIA 802.11 > card? I know I've seen one of these before, and the card manufacturer > (3Com) shows one on their web site, but they deny its existence. (Figures.) I'll check at the PX this weekend, I've seen, over there, a combo 3.5/PC card combo. Don't know about mfgr or interface off hand. -- Gerry Creager "Due to the confusion from too many genres of music, we have decided to put both country music and rap music into the genre of Crap music." --- You are currently subscribed to ss as: adesjard@cme.com To unsubscribe send a blank email to leave-ss-6751T@lists.tapr.org ------=_NextPart_000_0000_01BFB0FA.ADB24FC0 Content-Type: application/octet-stream; name="Desjardins, Alan.vcf" Content-Transfer-Encoding: 7bit Content-Disposition: attachment; filename="Desjardins, Alan.vcf" BEGIN:VCARD VERSION:2.1 N:Desjardins;Alan FN:Desjardins, Alan EMAIL;PREF;INTERNET:ADesjard@CMEDOMAIN.CME.com REV:20000413T133750Z END:VCARD ------=_NextPart_000_0000_01BFB0FA.ADB24FC0-- --- 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 28 16:28:14 2000 Received: from lists.tapr.org (lists.tapr.org [204.17.217.24]) by tapr.org (8.9.3/8.9.3/1.13) with SMTP id QAA21113 for ; Fri, 28 Apr 2000 16:28:13 -0500 (CDT) Message-Id: X-Sender: kf7tp@mail.cybertrails.com Date: Fri, 28 Apr 2000 14:22:34 -0700 To: "TAPR Spread Spectrum Special Interest Group" From: Keith Justice Subject: [ss] Re: Suggestions? In-Reply-To: References: Mime-Version: 1.0 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: <4.3.2.20000428141340.00ae54b0@mail.cybertrails.com> Sender: bounce-ss-6751@lists.tapr.org Precedence: bulk Last year I bought a pair of "Aviator 2.4" wireless lan pcmcia cards. They came with ISA adapters. The adapters say RayCom RIS 100. Made in Korea. You could try a search on that. They have jumpers to set the slot to 1 - 4 and DMA channel. The chip is a Ricoh RF5C296. Keith At 10:36 AM 4/28/2000 -0400, you wrote: >Does anyone know if there is a PCI or ISA card made that will accept a >16-bit PCMCIA card in order for a desktop machine to use a PCMCIA 802.11 >card? I know I've seen one of these before, and the card manufacturer >(3Com) shows one on their web site, but they deny its existence. (Figures.) > >Any ideas? > >Thanks in advance, > > -Rob > KZ5RW > > > >--- >You are currently subscribed to ss as: kf7tp@cybertrails.com >To unsubscribe send a blank email to leave-ss-6751T@lists.tapr.org Keith Justice, KF7TP 6759 Wagonwheel Lane Lakeside, AZ 85929 LL: 520-537-8657 Occ. in Mesa, AZ: 480-461-8687 kf7tp@cybertrails.com kf7tp@kf7tp.ampr.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 Apr 28 16:47:42 2000 Received: from lists.tapr.org (lists.tapr.org [204.17.217.24]) by tapr.org (8.9.3/8.9.3/1.13) with SMTP id QAA21783 for ; Fri, 28 Apr 2000 16:47:40 -0500 (CDT) Message-ID: From: "Eric S. Johansson" To: "TAPR Spread Spectrum Special Interest Group" References: Subject: [ss] NETCPA meeting Saturday Date: Fri, 28 Apr 2000 17:45:41 -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 V5.00.2919.6700 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: <051201bfb15b$19366a00$0500a8c0@rufus> Sender: bounce-ss-6751@lists.tapr.org Precedence: bulk (I apologize for the late notice but I've been up to my butt in alligators) This coming Saturday April 29th the New England TCP association will be holding a meeting at miter in Bedford MA. The group is trying to build a New England based wide area network and would welcome volunteers. For more information about the group, the upcoming meeting, and our activities, take a look at our website. http://www.netcpa.org/ thanks --- eric ( ka1eec) --- 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 Apr 30 18:02:05 2000 Received: from lists.tapr.org (lists.tapr.org [204.17.217.24]) by tapr.org (8.9.3/8.9.3/1.13) with SMTP id SAA13859 for ; Sun, 30 Apr 2000 18:02:03 -0500 (CDT) Message-ID: Date: Sun, 30 Apr 2000 16:59:08 -0600 To: "TAPR Spread Spectrum Special Interest Group" From: vincen@mail.enol.com Subject: [ss] NOS for Palm MIME-Version: 1.0 Content-Type: text/plain Content-Transfer-Encoding: 8bit User-Agent: IMP/PHP IMAP webmail program 2.2.0 X-Originating-IP: 216.67.96.240 Sender: bounce-ss-6751@lists.tapr.org 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: <957135548.390cbabcb25cf@webmail.enol.com> Precedence: bulk I would like to use my palm to access Internet Email over ham radio. Is there a JNOS like program for the palm? What would be necessary to do this? Are there some ss options coming along that could be uses in the future. ----------------------------------------------------- This mail sent through http://webmail.enol.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