[Elecraft] Tuning noise on K2 - 40M

[Kevin Schmidt]

I think this is the known "feature" described by Wayne in:
http://www.ac6rm.net/mailarchive/html/elecraft-list/2000-03/msg01007.html

73 Kevin w9cf

>My K2 also produces clicks on 40m which disappear if the antenna
>is disconnected or turned away from strong BC stations above 7100
>kHz. Running CAL PLL has not cured the problem, and I have since found
>the same problem on 15m. It might exist on other bands but I have not
>had the time to check. I have a *suspicion* that strong signals from the
>antenna / banspass filters reach the VCO and Reference oscillator area
>of the RF board by some direct route, not via the Preamp / attenuator /
>mixer and momentarily 'upset' the VCO causing the click. The VCO (VFO)
>could be upset if some product produced by multiple mixing attempted to
>take over control of the loop, sometimes a problem with locked loops. But
>I cannot confirm this yet due to lack of time at the moment.
>
>73,
>Geoff
>GM4ESD