5W HF PA - setting bias current


As I understand it, by adding a temporary link to load the DA shift register with 255, I can set the bias point by monitoring the supply current drawn, with no need for any RF drive.

Is this all there is to it? As theres no drive, do I take it that there is no requirement to terminate the output? Or, does the output require at least to 'see' a 50 ohm load?

I will be adding this amp into my 6-band U3S case,

Martin G7MRV

Join QRPLabs@groups.io to automatically receive all group messages.