Pete,
When using WWV to set the K3 reference, make certain you are listening
to the carrier. WWV is an AM signal that is modulated by a 500 or 600
Hz tone on alternate minutes (440 Hz 2 minutes after the hour). That
produces tones that are both above and below the carrier.
So be certain you are hearing the carrier and not one of the modulating
tones.
73,
Don W3FPR
On 12/16/2021 4:34 PM, Pete Smith N4ZR wrote:
I've been wondering for some time if my 10-year-old K3's frequency
calibration was off, because it seemed like most spots of me were well
off when I clicked on them, usually in one direction. Not having a
frequency counter, I went to the alternative method outlined in page
49 of the manual. I thought I did it all "by the book", but found
that when I was done 15-MHz WWV's carrier frequency (determined by
zero-beating the carrier) was almost 400 Hz low. Since I wasn't
looking for FMT-level accuracy, I went back to WWV and adjusted the
REF CAL setting by ear until 15.000 on my RX dial was as close to
zero-beat with WWV as I could tell. We'll see how it worked out, but I
wonder if I simply have some fundamental misunderstanding of what's
involved. Wouldn't be the first time...
______________________________________________________________
Elecraft mailing list
Home: http://mailman.qth.net/mailman/listinfo/elecraft
Help: http://mailman.qth.net/mmfaq.htm
Post: mailto:Elecraft@mailman.qth.net
This list hosted by: http://www.qsl.net
Please help support this email list: http://www.qsl.net/donate.html
Message delivered to arch...@mail-archive.com
