In article ,
krj wrote:

Doug Dotson wrote:
"Tamaroak" wrote in message
...

I have two new VHF radios, both of which have a PA and foghorn output and
will send a 20 watt signal into a horn mounted on my flybridge. Standard
Horizon says I can't just hook the two outputs together to the horn because
the one radio will backfeed into the other.


True. A better choice might have been a radio with a remote mic capability
like a Standard Horizon or ICOM.


Their solution is to get two diodes and wire them on the + wire before it
gets to the horn. The other option would be to have two horns which would
be ugly.


If it's their solution and they can;t tell what diodes to use I would be
suspect
of the solution. Not sure how 2 diodes solves the problem for an audio
signal.


Question: What kind, size, specifications do I use for said diode? The guy
at Radio Shack looked at me like I was from Mars when I asked him about
this.


Radio Shack lost their interest in anything technical years ago. I went in
the other
day looking for a power resistor and he hadn;t a clue. I found exactly what
I
needed but no thanks to him. I suspect they will be eliminating their parts
department soon anyway.


Is there some other way to do this?

Capt. Jeff



Isn't Radio Shacks slogan "you have questions? we have answers."
krj

From a Radioshack Sales Droid???? You have got to be kidding......

You can't isolate the Audio (AC Waveform) from two radios with
diodes......


Me