My 40m version seems to be having fading output power, literally going down with time on my 40m version.? I thought the finals were overstressed with my issues learning to use the GPS, as this dropped power from 3 watts to 1.8 watts on my 40m version.? Replacing the three MPS170 transistors gave the same 1.8 watts.? Now power is fading down to 1.2 watts, and the current seems to be dropping as well.? Is there anything in the circuit that could behave this way?? I checked all the connections in the transmit section.?
Curt