[Repeater-Builder] Repeater Linking
OK, I know I've mentioned this before, but I think I'm on to something now... I wanted to have a stand alone repeater linker, kind of a crossband repeater, that would link uhf and vhf repeaters together without needing to make any changes to either repeater. The problem I ran into is when the first repeater finishes transmitting, the linker will hear the second repeater (if the pl doesn't drop out) and will key up the first repeater again. This cycle will continue until you turn off the linker. I tried this with my crossband radio and it causes the same problem. One solution is to have the repeater controller stop transmitting their pl right after the COR drops. Not all repeaters do this, so you would have to be selective as to which repeaters you link. The solution I came up with today is to use a microcontroller with a built in a/d converter. If after the first repeater stops transmitting, the microcontroller can sample the audio coming from the second repeater. If I go through a high pass filter, I should (might) be able to determine if the audio is 'dead air', a courtesy tone, or someone talking. If it's dead air or a tone, I won't key the linker. I can then wait for the COR from the second repeater to drop, or listen for audio. Do you think it will work? - Jerry
Re: [Repeater-Builder] Repeater Linking
Can you not get the cooperation of the operators of the repeaters you want to link? Without that, the technical issues will be the least of your problems. If they approve, the PL solution can actually work quite well. The decision to be part of a linked system belongs to the licensee of each repeater. A remote which allows you to use your own repeater to access another is one thing, but linking two repeaters and their communities to each other through a third-party box without approval is a no-no in my book. 73, Paul, AE4KR - Original Message - From: Jerry To: Repeater-Builder@yahoogroups.com Sent: Wednesday, January 20, 2010 4:05 PM Subject: [Repeater-Builder] Repeater Linking OK, I know I've mentioned this before, but I think I'm on to something now... I wanted to have a stand alone repeater linker, kind of a crossband repeater, that would link uhf and vhf repeaters together without needing to make any changes to either repeater. The problem I ran into is when the first repeater finishes transmitting, the linker will hear the second repeater (if the pl doesn't drop out) and will key up the first repeater again. This cycle will continue until you turn off the linker. I tried this with my crossband radio and it causes the same problem. One solution is to have the repeater controller stop transmitting their pl right after the COR drops. Not all repeaters do this, so you would have to be selective as to which repeaters you link. The solution I came up with today is to use a microcontroller with a built in a/d converter. If after the first repeater stops transmitting, the microcontroller can sample the audio coming from the second repeater. If I go through a high pass filter, I should (might) be able to determine if the audio is 'dead air', a courtesy tone, or someone talking. If it's dead air or a tone, I won't key the linker. I can then wait for the COR from the second repeater to drop, or listen for audio. Do you think it will work? - Jerry
Re: [Repeater-Builder] Repeater Linking
The best way is to have the pl drop when the cor drops --- On Wed, 1/20/10, Jerry gdste...@yahoo.com wrote: From: Jerry gdste...@yahoo.com Subject: [Repeater-Builder] Repeater Linking To: Repeater-Builder@yahoogroups.com Received: Wednesday, January 20, 2010, 6:05 PM OK, I know I've mentioned this before, but I think I'm on to something now... I wanted to have a stand alone repeater linker, kind of a crossband repeater, that would link uhf and vhf repeaters together without needing to make any changes to either repeater. The problem I ran into is when the first repeater finishes transmitting, the linker will hear the second repeater (if the pl doesn't drop out) and will key up the first repeater again. This cycle will continue until you turn off the linker. I tried this with my crossband radio and it causes the same problem. One solution is to have the repeater controller stop transmitting their pl right after the COR drops. Not all repeaters do this, so you would have to be selective as to which repeaters you link. The solution I came up with today is to use a microcontroller with a built in a/d converter. If after the first repeater stops transmitting, the microcontroller can sample the audio coming from the second repeater. If I go through a high pass filter, I should (might) be able to determine if the audio is 'dead air', a courtesy tone, or someone talking. If it's dead air or a tone, I won't key the linker. I can then wait for the COR from the second repeater to drop, or listen for audio. Do you think it will work? - Jerry __ Yahoo! Canada Toolbar: Search from anywhere on the web, and bookmark your favourite sites. Download it now http://ca.toolbar.yahoo.com.
Re: [Repeater-Builder] Repeater linking
On Sep 10, 2007, at 5:55 PM, Mike Mullarkey wrote: Nate, Take the TAIT radio sell themon EBAY and get some Motorola SM50 or 120 radios. You will be much happier. Mike K7PFJ Mike, you replied to the wrong person. I was replying to VE6IVN who's working with the Tait radios. My experience with them is in the past. ivanjewell wrote: Hello all we have 4 tait 2000 radios to link our repeater to another one I was wondering if anyone has a wiring diagram to do this? We are running a arcom 210 controller thanks in advance and 73's VE6IVN Ivan But for discussion's sake, I'm wondering what you found wrong with them, Mike. I didn't build it, but one of our club's early 440 repeaters (a LONG time ago) was a pair of Tait mobiles, and it ran fine for something like 3-5 years. The radios are still in their custom rack panel downstairs in the club's storage area... my basement, and I've used them with a duplexer for a quick-and-dirty full-duplex UHF link two years ago, and then shelved them again. They're tanks... and just keep running. Someone before my time tapped them for PTT/COS and put a little board they made in them to amplify and de-emphasize discriminator audio they tapped and installed into those DB-9 holes I mentioned to Ivan. The only bummer is that they tapped a real COS and it's not muted/gated audio, but that's fixable if I ever need them again for another mini-project. I had a couple of the LTR 220 MHz mobiles without the accessory DB-9 connector and accidentally blew a chip hunting for a CTCSS-follow line in one of them... oops. Probe slipped. I had figured out how to program them for ham 220, using the LTR channel ID's, well at least the receiver of one and the transmitter of another, and was going to hook them up to a 220 antenna for a poor- man's 220 repeater (not for the club, just a backyard project). Anyway, never had any problems with the four of them that are floating around here other than blowing that one up. And that was my own fault. Wondering what you ran into. Mobiles are never good repeaters, but... these mobiles work just fine... -- Nate Duehr, WY0X [EMAIL PROTECTED]
Re: [Repeater-Builder] Repeater linking
ivanjewell wrote: Hello all we have 4 tait 2000 radios to link our repeater to another oneI was wondering if anyone has a wiring diagram to do this? We are running a arcom 210 controller thanks in advance and 73's VE6IVN Ivan The Tait mobile radios I've messed with either have or don't have an option in them to bring out various signals on a DB-9 connector in the back. They had to be ordered with the option, however the punch-out is still there and you can find tap-points using the schematic and it makes a handy place to mount a DB-9 if they weren't ordered with the option. If they already have the DB-9 connector on the back, the signals you need are already there, most likely. Do yours have DB-9's on the back, near the power connector? Are they Tait 2000 Series II radios? Series III? Tait 2000 is somewhat generic, as they have had multiple series of radios in that product line, on wildly different bands... Nate WY0X
RE: [Repeater-Builder] Repeater linking
Nate, Take the TAIT radio sell themon EBAY and get some Motorola SM50 or 120 radios. You will be much happier. Mike K7PFJ _ From: Repeater-Builder@yahoogroups.com [mailto:[EMAIL PROTECTED] On Behalf Of Nate Duehr Sent: Monday, September 10, 2007 5:53 PM To: Repeater-Builder@yahoogroups.com Subject: Re: [Repeater-Builder] Repeater linking ivanjewell wrote: Hello all we have 4 tait 2000 radios to link our repeater to another one I was wondering if anyone has a wiring diagram to do this? We are running a arcom 210 controller thanks in advance and 73's VE6IVN Ivan The Tait mobile radios I've messed with either have or don't have an option in them to bring out various signals on a DB-9 connector in the back. They had to be ordered with the option, however the punch-out is still there and you can find tap-points using the schematic and it makes a handy place to mount a DB-9 if they weren't ordered with the option. If they already have the DB-9 connector on the back, the signals you need are already there, most likely. Do yours have DB-9's on the back, near the power connector? Are they Tait 2000 Series II radios? Series III? Tait 2000 is somewhat generic, as they have had multiple series of radios in that product line, on wildly different bands... Nate WY0X
[Repeater-Builder] Repeater linking
Hello all we have 4 tait 2000 radios to link our repeater to another oneI was wondering if anyone has a wiring diagram to do this? We are running a arcom 210 controller thanks in advance and 73's VE6IVN Ivan
