[Elecraft] Birdies

[William Myers]

I tried Tom's suggestion by removing the high current supply and powering
the K2 from the low current source.  A few of the birdies did disapear, but
only a few - and the objectionable one at 10.115 mHz is still there.
However, as I look at the schematic, the HV supply oscillator is powered
through P8/J8 (12CTRL) from the K2 Control board.  I wonder if the HV supply
oscillator must be disabled by disconnecting J8.  If so, my test is invalid.
Anyone know?

Tom's input does make sense to me.  I do not remember this particular birdie
before adding the KPA100.

Bill K6IFF

"If the strong birdies disappear with the KPA100 is disabled (power
removed), then there's a chance that the PIN diode Hi-V supply oscillator
might be the culprit."

Tom Hammond   N0SS