[Elecraft] Weird signal on 80m on K3 S/N 642

[Tim Tucker]

Can you post a picture of the signal?

On Tue, Jul 20, 2021 at 2:35 PM Fred Jensen <k6dgw at foothill.net> wrote:

> 1.  Is this list still active?  Seems like ages since I've seen any
> activity.  Wonder if foothill.net has it blocked?
>
> 2.  I have a strange noise on 80.  It consists of what appears on the P3
> to be two slightly fuzzy carriers about 3 kHz apart, about S5-6.
> Sometimes that's all there is, but much of the time, the signal slides
> back and forth between them forming a rope-like pattern.  The pattern is
> repeated about 25 kHz lower, and both are synchronized.  The lower pair
> is centered on 3518, the upper pair on 3542.
>
> I've done all the usual [K3 on battery/main breaker off], DFing some,
> and I've searched down to 100 kHz and don't find it.  My P3 is in fixed
> tune mode so the noise display remains constant on the screen as I tune
> across it.  Then, I noticed that when I tune the K3, it disturbs the
> steady back and forth, creating a much finer rope-like pattern.  It is
> totally repeatable, and happens on both the lower and upper signals.
> Tuning either direction does the same thing.  When I stop tuning the Big
> Knob, it reverts to the slow back and forth about once per second.
>
> Wondering if there's something amiss in my K3.  It works normally in all
> other respects, and these signals do not appear anywhere else up to 29.5
> MHz.
>
> 73,
>
> Fred ["Skip"] K6DGW
> Sparks NV DM09dn
> Washoe County
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