[Elecraft] K2 Early Ver. A Power out problem #2438

Jimithy66 jimithy66 at gmail.com
Thu Jun 13 15:33:38 EDT 2019


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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