Albert, I had a very similar installation as you describe in my car, and I used a dual-band brick PA with my setup. 5W VHF yielded 50W / 4W UHF yielded 40W. My biggest issue with the setup was they side contacts on my radios wouldn't make good contact all the time with the MVA, so I yanked it in favor of a dual-band mobile. But I still have the MVA and the PA, just in case... ;-)
Seeing you prefer to use separate PAs, you might want to consider two diplexers - one ahead of each PA to "split" the feedlines and then one behind them to "re-combine" them. But to be honest, IMHO this is kinda the "Rube Goldberg" way of doing it, I think. Compare prices - by the time you get the diplexers and other stuff, you may well be approaching the cost of one dual-band PA. Mark - N9WYS -----Original Message----- From: Repeater-Builder@yahoogroups.com [mailto:repeater-buil...@yahoogroups.com] On Behalf Of hitekgearhead I know I am going to get the singular answer of "WHY" but I really would like some technical input on this. In my car I have an old Genesis series convertacom connected to a dual band Comet antenna. I often will swap my VHF and UHF HT back and forth and utilize the dual band capability of my antenna. It works pretty well. What I would like to get some input on however, is how to run some power with this setup. Of course the easiest would be to get a amateur dual band amplifier, but I already have a VHF and a UHF (N1275A and N1274A) amplifier. What I would like to do is parallel these two amps with some kind of switching/duplexer setup so that I could easily switch from VHF to UHF. My initial idea was to run an antenna switch from the convertacom to the amps so I can manually select which one the signal goes to. Then on the output side of the amps I thought about using an antenna duplexer on the output of the amps to feed the antenna. I was also thinking of running a switch to alternately select which amp was receiving DC power, but I don't know if that would be necessary. (Could I leave both amps powered on in this situation?) So, does this sound about right or am I going off the deep end? Thanks Albert
