[Elecraft] K1 - 40m strong signal performance

[Mike Morrow]

Kevin Danks wrote:

> I've been playing with my newly completed K1 and I've noticed that
> strong signals on 40m often cause a strange squawking sound
> on the start of the first morse character received, almost like chirp.

> Am I right to assume this is an AGC issue, and that changing C31
> to a 1uF could be the answer?

Kevin, that would be my first guess.  I haven't noticed what you describe on my K1, but then I changed RF-C31 to 1 uF very shortly after building my K1 in late 2000.  I think a .47 uF C31 might even be better.  I don't know what the rationale is behind having such slow AGC action as is caused by the 2.2 uF in the stock design.

You might want to use the menu to turn off the AGC to see if that lends credibility to you diagnosis.

73,
Mike / KK5F