Low power output

Posted by ae5ka on Dec 26, 2010; 11:47pm
URL: http://elecraft.85.s1.nabble.com/KX1-Low-power-output-tp5868519p5868479.html

With 13.0 volts at the input jack (from a bench supply), and 12.7 volts on the circuit board's + bus, I am only reading 1.4 watts maximum power output into a 50 ohm dummy load. I haven't found a problem using the troubleshooting guide, voltages at Q1, Q4, Q5, and Q6 are where they are supposed to be. T1 and L3 look OK to me - but if I'm a sub-par winder can that lead to lower output?

I have the resistors for the higher power output mod, but I'm trying to rule out build problems first.

Any additional ideas?

Thanks,
Chip