This is a good example, don't do what you just thought about doing - you
will ruin the rx radio set. Before you transmit into the cavity filter
be sure it has some isolation to the rx port, this is a must... Now how
can you test this? Try a little extra isolation - don't connect direct,
huh? what is he talking about, don't connect? using a weak tx signal,
put a rubber antenna there on the rx port and move the radio without the
antenna closer to the port watching the signal strength drop off, this
can rough you in until the rx port doesn't hear the tx radio signal
coming out of the rx port, this is done with a dummy load on the antenna
port of the cavity filter set. Now reverse the situation, move the
rubber antenna to the tx port and put the rx onto the cavity - with a
signal generator or very weak signal tx a moment and watch the signal
strength, if you saw none you are kinda close. Before you do something
that will cause costly damage, it is worth some time to find someone
around the area that can do deeper testing and tell you just how close
you really were - and get them a dinner gift certificate or at least
something close - ya gotta eat! Who knows you may be asked to join as a
guest at an upcoming tune session or invited to learn about some other
form of public service.
David Schornak wrote:
>
> can't you use two radios antenna on the duplexer and a handi talkie on el
> power and another hooked up to receive and vice a versa when it comes to the
> transmit side. this would be short of having the right equipment of course
> and your work should be checked with the proper equipment ASAP.
>
--
73...Clark Beckman N8PZD
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