Is there any suggestions or information that can be provided for an Automatic Volume/Gain Control for a transceiver. I am trying to improve the level control on over modulated transmissions for the audio output. It would be desirable to incorporate a manual adjustment to the level.

 

Google gets 133, 000 hits on "agc circuit". Here's one with several examples - http://www.discovercircuits.com/A/autogain.htm.