[Elecraft] 30 Metre Birdy

[Dave]

Mike & Gang

My K2 (serial #1892) also has a birdy around that frequency... 10.114.83
showing on the dial at the moment. My K2 is modified to Rev B and includes
RS232, SSB, 160, ATU.

73's Dave G4AON


----- Original Message -----
From: "Mike Harris" <mike.harris@horizon.co.fk>
To: <elecraft@mailman.qth.net>
Sent: Friday, February 14, 2003 5:00 PM
Subject: [Elecraft] 30 Metre Birdy


> G'day all,
>
> I don't monitor the list all the time so this might have already come
> up.
>
> Following installation of the replacement BFO L33 and realignment of
> filters I was casually tuning 30 metres and bumped into an S1
> (flickering first LED) signal on 10115.22kHz (my calibration,
> currently about -50Hz on 10MHz WWV).
>
> It was interesting to step through the filters and note that signal
> vanished out of the passband of each filter and had to be retuned.
> Stepping through the filters on a regular CW signal results in
> basically zero frequency shift.
>
> Also noticed that the signal step shifted approximately 170Hz lower
> by rotating the power control from QRP to QRO with a noticeable
> change in signal level, can't remember which was stronger.
>
> The signal is internally generated.
>
> The signal is probably a high order mixing product, 5th order or
> higher which will be confirmed when I check the tuning rate later.
> The audio frequency changes HF when tuning HF and rapidly vanished out
> of the filter and stepping at a significant multiple of the 10Hz
> tuning step.
>