Hey! Found the info! The RX attenuator is CRV-51011, part of the TBL 50064 Speech input set. 73!!! EdZ KG6UTS ---- Ed Zeranski <ezeran at ezeran.cnc.net> wrote:> > Roy and All, > The unit with the large knob is the 'mute'/TR device that was a voltage divider-TR relay and part of, I believe, the voice unit for the TBL.> EdZ KG6UTS