Buenas tardes,

I have ordered a module like this https://learn.adafruit.com/adafruit-tpa2016-2-8w-agc-stereo-audio-amplifier. 

The module has adjustable gain via I2C and incorporates AGC and Mute, so the idea is to test it on a V6 with ESP32 (see https://groups.io/g/BITX20/topic/76873326#82075) and have AGC and Squelch without making modifications to the circuit, only using the connectors available on the main board of the uBitx.

The second channel of the amplifier could be used to add a SA828 VHF/UHF module to the uBitx as a separate transceiver.

We will see ...

Ramón