I had this problem when I was first building my K2 a few years back.
I was scratching my head for hours. Finally put a logic analyzer on the
bus and found the problem: I believe it was the RIT control -- every time
a change was detected, the MPU would snap the VFO back. For some reason,
mine was a little scratchy or was otherwise wandering around by +/- 1 and
it was enough. I fiddled with it a bit and everything was fine. I meant
to make sure I didn't miss a step in the manual saying to rail the
control, and/or post this experience to the reflector, but I don't think I
ever did.
On Wed, 10 Nov 2004, John Heaviside wrote:
PLL Reference Oscillator Range Test (page 57 of manual).
The 4 MHz osc has been calibrated to an external counter with known accurate
reference.
In CAL FCTR the counter reads 12099.15 MHZ
Tap BAND+ there is no change to this reading.
Tap BAND- the reading briefly changes to 12079.?? (too fleeting to read
decimals) and instantly reverts to 12099.15.
_______________________________________________
Elecraft mailing list
Post to: [email protected]
You must be a subscriber to post to the list.
Subscriber Info (Addr. Change, sub, unsub etc.): http://mailman.qth.net/mailman/listinfo/elecraft
Help: http://mailman.qth.net/subscribers.htm
Elecraft web page: http://www.elecraft.com
