So time ago I obtained a 20W FET-Amplifier module manufactired by AR worldwide (Bothell, WA 98011, USA)
Specified frequency range 3,4 to 3,7 GHz, 20W, 21dB gain, +12V DC supply via a 7W2 mixed sub-d connector.
The 7W2 sub-d connector has marked +/- pins and 5 additional control pins.
As I assume that more of these amplifier modules may have found their way into ham shacks I wonder if anybody is using such an amplifier modul and has information about the funtion of the control pins.
I have not (yet) opened the housing....
regards, DF5VAE