2 coaxial switches will work, and you could leave power on. Given that I know 
what I am capable of and this type of system would lead to muliple failures by 
me as I failed to remember to switch things. If it was me I would just move the 
coax connectors as I swapped radios. I have done something like this in the 
past and got irritated and tossed the whole thing is favor of a wide band type 
of amp, which also has its issues of tuning and retuning

--- On Wed, 2/24/10, Lee Pennington <localjunkpedd...@gmail.com> wrote:


From: Lee Pennington <localjunkpedd...@gmail.com>
Subject: Re: [Repeater-Builder] dual band convertacom
To: Repeater-Builder@yahoogroups.com
Date: Wednesday, February 24, 2010, 9:07 AM












Not why............................ but WHY !!


On Wed, Feb 24, 2010 at 11:56 AM, hitekgearhead <hitekgearh...@hotmail.com> 
wrote:


  



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





-- 
"Always drink upstream from the herd."








      

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