Tamaroak wrote:
I have two VHF radios, both of which have a PA and foghorn mode and will
send a 20 watt signal into a horn mounted on my flybridge. Standard
Horizon says I can't just hook the two of them to the same horn becxause
the one radio will backfeed into the other, causing it to be harmed.

The solution is to get two diodes and wire them on the + wire before it
gets to the horn.

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 this.

Capt. Jeff

Not everything is clear to me, however, why do you need to use both
anyway?????

We got the extra amplifier solution, as well as the dual voice coil
PA, and toggle switch method, and summing transformer method. I think
thats
it. What are you going to do?????

greg

??