I think the winner of the best response is Mark with the "Rube Goldberg" statement followed by Kris with "wonky" and Lee with the plain old "WHY?"
Thank you all for your input. I appreciate the comments and the technical advice. My main motivation for doing this is A)to be different and weird... ie I do like the "wonky" aspect of it. And B) I already have most everything installed in the car and have the two amplifiers on hand. All I need is a couple cables and the appropriate switch and/or duplexer/diplexer. Also, on that note, hopefully you guys will forgive me if I used the incorrect term for the splitter/combiner. I have heard them called both duplexers and diplexers. Maybe I will get even more weird and add a 10m and 6m Genesis HT to my collection and rig them all to work from the same MVA...... Thanks again. Albert --- In Repeater-Builder@yahoogroups.com, "Mark" <n9...@...> wrote: > > 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 >
