> "briansoehl" <brianso...@...> wrote: > 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.
They'd easily be fine at 35 watts, especially at that duty cycle but by all means use what you feel comfortable with. > 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. You'd do well to have an external controller but it's not required. You could email me direct and I'll provide you with some additional connection information. > Otherwise I may have to use an external repeater control > panel, like a Zetron. > Brian Doesn't have to bet that expensive and complicated... s. > --- In [email protected], KT9AC <kt9ac@> 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 > > > > > > > > > > > > > > > > > > > > >
