Hi Chuck:

Well, that was from memory. You are right it is an audio feedback based
upon the gain control. The Drake 2B had negative feedback audio and sounded
better.

The last one I worked on, someone had run 100 watts into the antenna input
and that required manufacturing new coils. The forms were ruined. It would
not have been so bad, but when the radio quit, he switched bands to find out
why - with the transmitter still on.

73, Colin K7FM