Lwo power in KX1

Posted by Ignacy on Jul 26, 2009; 1:02pm
URL: http://elecraft.85.s1.nabble.com/Lwo-power-in-KX1-tp3328960.html

Just acquired used KX1.

Two problems. None of my screwdrivers moves 20m trimmers. Any idea?

The power as indicated by LP100 is 1W or less with 9V alkalines; the lowest in on 20m.

I made more detailed measurements on 20m. At 12V, the maximum power is 2.2 W measured by LP-PAN and 2.6 W with the inside meter; increasing the voltage does not help on 12V. The radio draws about .6A. Assuming the the final draws .5A, the efficiency seems to be 40-45%, much below that of a  C class amplifier.

On 40 and 30, The LP100-measured power is 2.4 at 12 rising to 3W with 14V.

Ignacy