
ADF4350 has 4 output power levels: 5, 2, -1, -4 depending on DB7 DB6 of R4.
The code hard codes the following for the rx and tx
adf4350_rx.rfPower = 0b00;
adf4350_tx.rfPower = 0b11;
which is -4 for RX and 5 for TX.
For amplifier testing, it is good to be able to move down in TX power level.
The VNA_QT app has power setting but currently does nothing for NanoVNA V2.
Can user selectable tx output power be implemented, even if it is only available with ADF4350 operation?