K2 Early Ver. A Power out problem #2438
Posted by
Jimithy66 on
Jun 13, 2019; 7:33pm
URL: http://elecraft.85.s1.nabble.com/K2-Early-Ver-A-Power-out-problem-2438-tp7653063.html
I finished building a basic kit with no options and the power output will
not rise above 2 watts and current (2A) is too high for that power.
Hi Cur flashes briefly before power output settles at 2 watts.
Voltage checks found the PA base bias circuit putting out
1.4 VDC but 0.8 V is expected.
Two PN2222A transistors Q11 and Q13 make up
the bias circuit and wonder if anyone else remembers
seeing this problem, and what may have caused it ?
Thanks,
Jim / W1FMR
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