[Elecraft] Birdie

[Don Wilhelm]

Martin,

Listening closely, I hear something in the vicinity - mine tunes around the
7014.78 area, and yes it shifts with changes in the filter selection.  It is
not a clear note, but quite 'raspy' and very sharp to tune.  Also it is a
higher order harmonic likely beating with some harmonic of the BFO, because
the 'note' changes pitch in reverse of normal signals - and the pitch
changes several hundred Hz when the K2 VFO is changed by only 10 Hz.  This
one is way down in signal strength - I had to run both the RF and AF gain
controls way up before I could hear it - it will not be any problem for me.

Since it is near a 5 kHz boundary along with its 'raspy' tone, I would
expect it to be some artifact of the PLL.

73,
Don
----- Original Message -----

> Hello elecrafters,
> I notice a birdie on 40m in cw.
> I did not check the other bands yet.
>
> K2 #2706 with the antenna removed, battery-powered,  mode cw:
>
> 7013.85   filter 1.5khz
> 7014.57           700hz
> 7014.65           400hz
> 7014.71           100hz
>
> I know there has been a discussion about birdies, but the archive is
> just too large to find a quick answer.
>