rip wrote in message .com...
Can you hear this interference through the cabin speaker?

Don't know. Haven't tried that one -- frankly I can hardly
hear anything through the cabin speaker

Or perhaps your using active noise-cancelling headsets?

'rip', we are -- but we have done the obvious experiment of
seeing if it's still there when the ANRs are turned OFF and
we're listening on a passive headset hooked to the handheld
radio. We have had problems with RF noise from a bad ANR
in the past -- however, it was just noise, not the audio
part of some TV or radio program.

However, the switched OFF ANRs are still sitting in the plane
if anyone thinks that makes a difference

I'm still trying to understand how a powered OFF radio with
the power OFF in the plane might be contributing to this
problem and hoping someone will explain this to me.

Cheers,
Sydney