Probably don't turn off the finalsdo1jml wrote: ↑Sun Feb 07, 2021 5:49 pmHow would the original firmware do it, then?G4EML wrote: ↑Sat Feb 06, 2021 10:28 pmI would suggest looking at the output amplitude envelope with a diode detector or a fast scope. It sounds to me as if the RD5R is not controlling the output power fast enough and doesn't like the 30ms bursts. The bursts could be very distorted if the power rise time is slow.
But this would require a lot of changes to the firmware if that is the solution, because the entire Tx system in controlled together.
Normally you don't leave the finals turned on then there is no driver signal, as the finals will amplify any noise on their input, including noise.
Not switching the antenna switch to Rx would not cause any spurious emissions, but any change would be a hack, and I don't have the necessary test equipment to look at the results of such hacks.
The last thing I need is people using this firmware on the RD5R causing interferance.