I’m working with 2.4 GHz band, sometimes tuning to away to 2.2, 2.8 or 2.9 GHz, just to test that interference isn’t causing any problems. TX is at BAND2.
Frontend gain is set to bare minimum, as I mentioned this problem in this topic Heavy distortions on TX . E.g to gain=1 or gain=2.
PAD gain is varying. Typically, higher gain give better results.