[Repeater-Builder] TKR-820 Repeater
Here is a question a posted yesterday... Any information would be great, thanks! Paul Paul, If you are a member of the Repeater-builder Yahoo group, pose this question to Skipp... IIRC, he is a Kenwood dealer and has come up with an add- on circuit of some type to obtain the correct voltages. But FWIW, I am running an external controller with my TKR-820 with no problems - and no mods to the COR voltage(s). You are correct - Pin 13 is COR (active LO)... Mark - N9WYS -Original Message- 1b. Re: TKR-820 Posted by: wd8chl [EMAIL PROTECTED] com jdbtcore Date: Thu Aug 28, 2008 1:06 pm ((PDT)) Paul wrote: When mating a TKR series repeater to a shared repeater tone panel, the kenwood only shows 3.5 volts on the COR line. Does anyone know if that is sufficient for a CSI TP-154? Is there a fix/mod or better place to get 5 volts, I am getting it from the 15 pin molex pin#13. Thanks, Paul
RE: [Repeater-Builder] Re: Diamond X-50 NA
Bob - Tell us more about how you did that what filtering/protection you used? (I've been thinking of a very similar project) -- Original Message -- Received: Fri, 29 Aug 2008 09:33:50 PM PDT From: [EMAIL PROTECTED] To: Repeater-Builder@yahoogroups.com Subject: RE: [Repeater-Builder] Re: Diamond X-50 NA Not too long ago I installed a TRAM 1480 with the following connected to it: 2M TX, 2M RX (repeater) 445 TX, 440 RX (repeater) 420 TX, 430 RX (duplex link) All running at the same time. No desense.
[Repeater-Builder] M-PA manual
Anyone have (perchance) a copy of LBI38377 - Operator's Manual for the M-PA portable? I was just given one (a UHF Systems radio) and have I no info on it at all. Thanks, Mark - N9WYS
[Repeater-Builder] RE: [EMAIL PROTECTED] VHF Duplexer
This question is best posed on the Repeater-Builder list (Repeater-Builder@yahoogroups.com), but I know the answer: A mobile (notch) duplexer will not work at a 600 kHz split. Even a 3 or 4 MHz split results in unacceptable performance. I have built a portable repeater for 2m, using the special TASMA portable repeater pair of 147.585 MHz input and 144.930 MHz output- a split of 2.655 MHz- but I had to use a Celwave 5085-1 duplexer to make it work. The 5085 duplexer is about twice the size of a mobile notch duplexer, and it is intended for splits as narrow as 3 MHz. With careful tuning on a network analyzer and using a 1-to-10 watt Motorola 1225 full-duplex transceiver, it performs very well. For a 50-watt repeater at a 600 kHz split, you will need a full-size set of cavities, which can be built into a foot locker for portability. 73, Eric Lemmon WB6FLY -Original Message- From: [EMAIL PROTECTED] [mailto:[EMAIL PROTECTED] On Behalf Of crowltom Sent: Saturday, August 30, 2008 9:06 AM To: [EMAIL PROTECTED] Subject: [EMAIL PROTECTED] VHF Duplexer Hello This is way off topic so... Looking for a mobile duplexer for a repeater project 50 watts max VHF Ham band 600 kHz separation. New or used, as long as it has a small foot print and it works. Small group, no money, help! THANKS
[Repeater-Builder] Re: Tait 800 - EPROMS, Manuals, Software
Hi Ed and group! I have the manuals for T838 PA, T837 Exciter and T835 RX scanned in PDF form. I uploaded them on Rapidshare. You can download them from http://rapidshare.com/files/141353699/TAIT_T800_Manuals.zip.html The file size is around 69MB. Hope they are the ones you are looking for. 73, Andreas - 5B8AP If you want I can scan my manuals for the series 1 Taits for 2mtrs. You will just have to give me some time, have to take the wife to a Russian weekend this weekend. Regards Kevin, ZL1KFM. Kevin, That would be great. Thanks, Ed Yoho W6YJ
[Repeater-Builder] RE: [EMAIL PROTECTED] VHF Duplexer
Tom, According to my CommShop duplexer isolation calculation software, a 600 kHz split at 2m with a 50 watt transmitter and a receiver with a (my assumption) sensitivity of 0.35 uV, about 87 dB of isolation is necessary to achieve no desense. If you intend to use two antennas, be aware that they will need to be separated by about 202 feet vertically or over three miles horizontally. Neither of these separations is practical for a portable repeater. Perhaps you should consider a UHF portable repeater, which can use a notch duplexer for the 5 MHz split. However, the ordinary UHF mobile notch duplexer will normally not tune down into the Ham UHF bands without having the internal coupling loops modified at the factory. I once converted a GR300 desktop repeater from the commercial UHF band to the Ham 70cm band, and I had to order a new Celwave factory-tuned duplexer to achieve optimum performance. 73, Eric Lemmon WB6FLY -Original Message- From: [EMAIL PROTECTED] [mailto:[EMAIL PROTECTED] On Behalf Of Tom Crowley Sent: Saturday, August 30, 2008 11:11 AM To: [EMAIL PROTECTED] Subject: RE: [EMAIL PROTECTED] VHF Duplexer Hello I'm tring to get this done before the snow flies. Looks like two ant. and some space to get it to work also some luck thanks for the info Eric At 10:22 AM 8/30/2008 -0700, you wrote: This question is best posed on the Repeater-Builder list (mailto:Repeater-Builder%40yahoogroups.comRepeater-Builder@yahoogroups.com mailto:Repeater-Builder%40yahoogroups.com ), but I know the answer: A mobile (notch) * Thomas E Crowley KC0VII [EMAIL PROTECTED] mailto:tecrowley%40iowatelecom.net http://www.iowatelecom.net/~stagreenhouse/page2.htm http://www.iowatelecom.net/~stagreenhouse/page2.htm St. Ansgar, Iowa. 50472 *
Re: [Repeater-Builder] Re: Tait 800 - EPROMS, Manuals, Software
Andreas Papagapiou wrote: Hi Ed and group! I have the manuals for T838 PA, T837 Exciter and T835 RX scanned in PDF form. I uploaded them on Rapidshare. You can download them from http://rapidshare.com/files/141353699/TAIT_T800_Manuals.zip.html The file size is around 69MB. Hope they are the ones you are looking for. 73, Andreas - 5B8AP Andeas, Are these Series I (EPROM) or Series II (PC / EEPROM) manuals? Ed Yoho W6YJ
[Repeater-Builder] ICOM F-221 Code Plugs
Hello, Looking to see if anyone has code plugs for F221 setup as a repeater. Thanks, Chris NH7QH
[Repeater-Builder] Re: TKR-820 and TKR-720 Kenwood Repeater with an external Tone Panel
Re: TKR-820 and TKR-720 Kenwood Repeater with an external Tone Panel The generic answer is no... the tkr-720 and tkr-820 COS/COR logic will not normally direct drive a tone panel... HOWEVER, you are lucky in the case of using a CSI TP-154, which should work well with the COS/COR Voltages available on/from the repeater. CSI did a very good job of designing their interface circuit. Be sure to follow the CSI TP-154 instructions to set the proper COS/COR logic and you're on your way. cheers, skipp skipp025 at yahoo.com Paul [EMAIL PROTECTED] wrote: Here is a question a posted yesterday... Any information would be great, thanks! Paul Paul, If you are a member of the Repeater-builder Yahoo group, pose this question to Skipp... IIRC, he is a Kenwood dealer and has come up with an add- on circuit of some type to obtain the correct voltages. But FWIW, I am running an external controller with my TKR-820 with no problems - and no mods to the COR voltage(s). You are correct - Pin 13 is COR (active LO)... Mark - N9WYS -Original Message- 1b. Re: TKR-820 Posted by: wd8chl [EMAIL PROTECTED] com jdbtcore Date: Thu Aug 28, 2008 1:06 pm ((PDT)) Paul wrote: When mating a TKR series repeater to a shared repeater tone panel, the kenwood only shows 3.5 volts on the COR line. Does anyone know if that is sufficient for a CSI TP-154? Is there a fix/mod or better place to get 5 volts, I am getting it from the 15 pin molex pin#13. Thanks, Paul
RE: [Repeater-Builder] Re: Diamond X-50 NA
At 8/30/2008 08:19, you wrote: Bob - Tell us more about how you did that what filtering/protection you used? (I've been thinking of a very similar project) Any ol' crossband diplexer to split between the 2 meter 440 bands (well, not quite any: must have connectors on the unit - no pigtail leads, which will cause desense). In this example I used an Austin diplexer, though I found the loss to be higher than the Comet/Diamond equivalents. The antenna port of the 2 meter duplexer of course went to the VHF side of the diplexer. On the UHF side, I used a wide split mobile duplexer to multiplex in the 420 TX. That duplexer was tuned to notch 440 445 on the low freq. port notch 420 on the high freq. port. The high freq. port of that duplexer went to the antenna port of another notch duplexer that duplexed the 445 TX 440 RX. A splitter or 10 dB coupler went on the RX port of that duplexer for the 439 MHz link RX. There were also pass cavities on both UHF TXs on the low freq. (RX) port of the 440 duplexer. The 439 link RX 440 main RX freqs. were close enough that I could tolerate the small additional losses on the 439 channel that were due to the pass cavity being tuned to 440. Bob NO6B
Re: [Repeater-Builder] RE: [EMAIL PROTECTED] VHF Duplexer
At 8/30/2008 11:52, you wrote: Tom, According to my CommShop duplexer isolation calculation software, a 600 kHz split at 2m with a 50 watt transmitter and a receiver with a (my assumption) sensitivity of 0.35 uV, about 87 dB of isolation is necessary to achieve no desense. If you intend to use two antennas, be aware that they will need to be separated by about 202 feet vertically or over three miles horizontally. Neither of these separations is practical for a portable repeater. One thing to consider is that since the primary limiting factor is TX noise getting into the RX, adding a pass cavity on the TX dramatically reduces the amount of separation required. I once operated a 2 meter system with a single pass cavity on the TX ran the RX feed straight to the RX antenna, only 60 ft. about the TX antenna. Worked fine with no desense for several years. Another option would be to go with a low phase noise PLL exciter; see the G.E. duplex curves links posted by Dave KA9FUR a couple of days ago. Still not practical for portable use; IMO standard 600 kHz split systems are impractical as portable repeaters, as by definition that can't be truly portable. Perhaps you should consider a UHF portable repeater, which can use a notch duplexer for the 5 MHz split. However, the ordinary UHF mobile notch duplexer will normally not tune down into the Ham UHF bands without having the internal coupling loops modified at the factory. Wow, that's the first time I've ever heard that. I've bought probably over a dozen UHF mobile duplexers over my lifetime never had a problem tuning them down to 440-450 MHz. Bob NO6B
Re: [Repeater-Builder] RE: [EMAIL PROTECTED] VHF Duplexer
At 8/30/2008 10:22, you wrote: This question is best posed on the Repeater-Builder list (Repeater-Builder@yahoogroups.com), but I know the answer: A mobile (notch) duplexer will not work at a 600 kHz split. Even a 3 or 4 MHz split results in unacceptable performance. I have built a portable repeater for 2m, using the special TASMA portable repeater pair of 147.585 MHz input and 144.930 MHz output- a split of 2.655 MHz- Glad to hear someone besides me is making good use of that pair. but I had to use a Celwave 5085-1 duplexer to make it work. The 5085 duplexer is about twice the size of a mobile notch duplexer, and it is intended for splits as narrow as 3 MHz. With careful tuning on a network analyzer and using a 1-to-10 watt Motorola 1225 full-duplex transceiver, it performs very well. I'm surprised you had to go to something a bit bigger than the standard 6-section mobile duplexer to make it work. I have a total of 3 VHF mobile duplexers 2 of them are quite a bit smaller than the 5085-1, but they still perform adequately: ~2.1 dB loss 65 to 70 dB notches. I actually put a VHF UHS preamp on one system to try to squeeze a little more S/N out of it it actually worked in that it didn't introduce any desense or IMD. Unfortunately the site noise is so high in LA that I don't think it actually made a significant improvement in S/N. Bob NO6B
[Repeater-Builder] Re: Tait 800 - EPROMS, Manuals, Software
I think they are Series I (published in 1991). You have to program the EPROMs using an external programmer. Andreas --- In Repeater-Builder@yahoogroups.com, Ed Yoho [EMAIL PROTECTED] wrote: Andreas Papagapiou wrote: Hi Ed and group! I have the manuals for T838 PA, T837 Exciter and T835 RX scanned in PDF form. I uploaded them on Rapidshare. You can download them from http://rapidshare.com/files/141353699/TAIT_T800_Manuals.zip.html The file size is around 69MB. Hope they are the ones you are looking for. 73, Andreas - 5B8AP Andeas, Are these Series I (EPROM) or Series II (PC / EEPROM) manuals? Ed Yoho W6YJ
Re: [Repeater-Builder] Re: Tait 800 - EPROMS, Manuals, Software
That will be the series I as the series 2 can be drect programmed. Kevin, ZL1KFM. Get Skype and call me for free. - Original Message - From: anpap To: Repeater-Builder@yahoogroups.com Sent: Sunday, August 31, 2008 9:51 AM Subject: [Repeater-Builder] Re: Tait 800 - EPROMS, Manuals, Software I think they are Series I (published in 1991). You have to program the EPROMs using an external programmer. Andreas --- In Repeater-Builder@yahoogroups.com, Ed Yoho [EMAIL PROTECTED] wrote: Andreas Papagapiou wrote: Hi Ed and group! I have the manuals for T838 PA, T837 Exciter and T835 RX scanned in PDF form. I uploaded them on Rapidshare. You can download them from http://rapidshare.com/files/141353699/TAIT_T800_Manuals.zip.html The file size is around 69MB. Hope they are the ones you are looking for. 73, Andreas - 5B8AP Andeas, Are these Series I (EPROM) or Series II (PC / EEPROM) manuals? Ed Yoho W6YJ sparc_nz Description: Binary data
[Repeater-Builder] Wanted: Doug Hall RBI
Please e-mail me directly at: [EMAIL PROTECTED] Thanks...
Re: [Repeater-Builder] Re: Tait 800 - EPROMS, Manuals, Software
As I have a set of these radios, I have a couple of questions. 1. How do tell the difference between the series 1 and series 2 radios? 2. As radios are the -20 versions, my next question is can they me made to move down to 146 mhz (or even 144 Mhz) without too much trouble? Gale KC4PL Gmail - Kevin, Natalia, Stacey Rochelle wrote: That will be the series I as the series 2 can be drect programmed. Kevin, ZL1KFM. My status skype:sparc_nz?call Get Skype http://www.skype.com/go/download and call me for free. - Original Message - *From:* anpap mailto:[EMAIL PROTECTED] *To:* Repeater-Builder@yahoogroups.com mailto:Repeater-Builder@yahoogroups.com *Sent:* Sunday, August 31, 2008 9:51 AM *Subject:* [Repeater-Builder] Re: Tait 800 - EPROMS, Manuals, Software I think they are Series I (published in 1991). You have to program the EPROMs using an external programmer. Andreas --- In Repeater-Builder@yahoogroups.com mailto:Repeater-Builder@yahoogroups.com, Ed Yoho [EMAIL PROTECTED] wrote: Andreas Papagapiou wrote: Hi Ed and group! I have the manuals for T838 PA, T837 Exciter and T835 RX scanned in PDF form. I uploaded them on Rapidshare. You can download them from http://rapidshare.com/files/141353699/TAIT_T800_Manuals.zip.html http://rapidshare.com/files/141353699/TAIT_T800_Manuals.zip.html The file size is around 69MB. Hope they are the ones you are looking for. 73, Andreas - 5B8AP Andeas, Are these Series I (EPROM) or Series II (PC / EEPROM) manuals? Ed Yoho W6YJ
Re: [Repeater-Builder] M-PA manual
What's to know? The top button can be channels or PL depending on the programming. The scan button is obvious. The menu button takes care of the rest. Joe M. n9wys wrote: Anyone have (perchance) a copy of LBI38377 – Operator’s Manual for the M-PA portable? I was just *_given_* one (a UHF Systems radio) and have I no info on it at all. Thanks, Mark – N9WYS Yahoo! Groups Links * To visit your group on the web, go to: http://groups.yahoo.com/group/Repeater-Builder/ * Your email settings: Individual Email | Traditional * To change settings online go to: http://groups.yahoo.com/group/Repeater-Builder/join (Yahoo! ID required) * To change settings via email: mailto:[EMAIL PROTECTED] mailto:[EMAIL PROTECTED] * To unsubscribe from this group, send an email to: [EMAIL PROTECTED] * Your use of Yahoo! Groups is subject to: http://docs.yahoo.com/info/terms/
[Repeater-Builder] Cheap 2 meter duplexer?
See eBay item 300253092365. $10 with less than a day left. I guess if you're in the Ohio area this could be a good deal. Bob NO6B
Re: [Repeater-Builder] Re: Tait 800 - EPROMS, Manuals, Software
I tuned the receiver down to the 2 meter band from 170 mHz with no problem, but I have not tuned the transmitter down yet. One of those things that I will get around to one of these days. I did not have any documentation when I tuned the receiver and a UK ham did the EPROM binary for me and I programmed it into the prom. Now that the documentation is available for the transmitter I need to build up a test cable to take the unit out of the chassis and get the transmitter down into the band. 73 - Jim W5ZIT --- On Sat, 8/30/08, gdw [EMAIL PROTECTED] wrote: From: gdw [EMAIL PROTECTED] Subject: Re: [Repeater-Builder] Re: Tait 800 - EPROMS, Manuals, Software To: Repeater-Builder@yahoogroups.com Date: Saturday, August 30, 2008, 7:09 PM As I have a set of these radios, I have a couple of questions. 1. How do tell the difference between the series 1 and series 2 radios? 2. As radios are the -20 versions, my next question is can they me made to move down to 146 mhz (or even 144 Mhz) without too much trouble? Gale KC4PL Gmail - Kevin, Natalia, Stacey Rochelle wrote: That will be the series I as the series 2 can be drect programmed. Kevin, ZL1KFM. Get Skype and call me for free. - Original Message - From: anpap To: Repeater-Builder@ yahoogroups. com Sent: Sunday, August 31, 2008 9:51 AM Subject: [Repeater-Builder] Re: Tait 800 - EPROMS, Manuals, Software I think they are Series I (published in 1991). You have to program the EPROMs using an external programmer. Andreas --- In Repeater-Builder@ yahoogroups. com, Ed Yoho w6yj_yahoo@ ... wrote: Andreas Papagapiou wrote: Hi Ed and group! I have the manuals for T838 PA, T837 Exciter and T835 RX scanned in PDF form. I uploaded them on Rapidshare. You can download them from http://rapidshare. com/files/ 141353699/ TAIT_T800_ Manuals.zip. html The file size is around 69MB. Hope they are the ones you are looking for. 73, Andreas - 5B8AP Andeas, Are these Series I (EPROM) or Series II (PC / EEPROM) manuals? Ed Yoho W6YJ
