First of all Thanks Tony and Steve. The radios are rated at "35W adjustable to 5W" I plan to run them at about 20W, and they aren't going to exceed about 30 to 40% duty cycle. So the PAs should be fine.
AS far as a duplexer, it's already installed and tuned in the repeater I'm replacing. I guess what I'm looking for is any method of connecting the receiver to the transmitter. The detect signal output (RX acc plug pin 4) is at 400mV/47Kohms, and the Mic input on the transmitter is 5mV/3KHz dev. 600ohm (TX acc plug pin 5). And also is there a way to get an active low out of the receiver when the programmed freq and tone pair is decoded (to use as PTT on the TX). Hopefully a simple, durable and effective method has been done already. That way I don't have to reinvent the wheel. Otherwise I may have to use an external repeater control panel, like a Zetron. Brian --- In [email protected], KT9AC <kt...@...> wrote: > > Brian, > I agree with Steve, but as a side note if you can run the mobiles at > their lowest rated *power* and use an external PA and fans, it should be > ok. Rated power for example means a 10-25W model run at 10W (since below > that it might induce problems). I have two Motorola GM300 1-10W radios > (M04 models) feeding an external PA and they run cool at 2W for an hour > easily. > > Depending also on where you plan to install you will most likely need an > appropriate duplexer or bandpass filters. > > Good luck!! Its great to build repeaters from an idea, as long as you > use good engineering practices and don't be cheap on what counts. > > Tony > > Steve wrote: > > > > Hi > > I assume they are mobiles and as such you will have to watch > > the tx pa or it will cook, rx wise no problem. > > Dosn't matter if they were made for PS use they were, like > > most mobiles only intended for limited tx times.. > > > > Steve > > ----- Original Message ----- > > From: "briansoehl" <brianso...@alliance com.net > > <mailto:briansoehl%40alliancecom.net>> > > To: <Repeater-Builder@ yahoogroups. com > > <mailto:Repeater-Builder%40yahoogroups.com>> > > Sent: Tuesday, March 16, 2010 5:23 PM > > Subject: [Repeater-Builder] building a repeater out of 2 Kenwood TK-830G's > > > > > Has anyone built a repeater out of 2 TK-830G's? I have 2 and want to > > > build a repeater to replace one. These are "high spec" radios designed > > > for use in public safety and I feel they'd make a good repeater. > > > > > > Any help would be greatly appreciated. > > > > > > Brian > > > > > > > > > > > > > > > ------------ --------- --------- ------ > > > > > > > > > > > > Yahoo! Groups Links > > > > > > > > > > > > > >
