"Steve" wrote in message
...
I have a pair of speakers in the cockpit coaming for the AM/FM radio..

I would like to figure out a way to connect the VHF external speaker to
one
of these, so I can hear any calls on it in scan or monitoring of ch16.

Both radios are below deck so I can only hear them in the cockpit on a
remote speaker..

Here in France there is an automatic commutator on the market. It
automatically switches the cockpit speakers to VHF if there is a
transmission, otherwise stereo is fed through. Works very well. From a
company called Thira I think - try Google.