As we discussed on QO-100 last night can I suggest an easy access button (perhpas in the TX pane) where you can rapidly enable/disable the Rx mute ?
My pluto sdr has a TCXO and there is often a slight offset (100s Hz or less) which I tune out with the XIT whilst I monitort my transmissions on the duplex downlink.
I freqeuntly use this capabilty but it takes a few mouse clicks - also the change is not dynamic it only changes sate when you toggle the PTT.
It's only a minor tweak but I think it would really useful for QO-100 use.
Thanks again for such software !