"Robert Briggs" wrote in message
...

Let's see, you know that the guy is transmitting on one frequency,
but what about his second box?

If he's using it to monitor another frequency then, with a spot of
educated trial-and-error, you may be able to get through to him.


Does the side-tone of the transmitter not take over his intercom?

I thought that it does and that all he gets in his headphones is his own
mic, no matter what else is "on"??