Jerry,
That GPSDO will be good for setting the dial calibration, but WWV is
better since it transmits AM at a fixed frequency.
Instructions for doing a good dial calibration are on my website
www.w3fpr.com. It explains the entire procedure.
Use SSB when doing the dial calibration because there is an offset if
you try to use CW - no offset with SSB.
73,
Don W3FPR
On 6/28/2021 1:05 PM, jerry wrote:
All,
OK, I did it. Made up a counter probe from a hunk of
rg316, crimped a couple of dupont female clips onto the end,
put them in a shell, squished a dab of hot melt glue between the pins
so they couldn't short out, slipped over a bit of shrink...etc.
I recently acquired a GPSDO ( GPS Disciplined Oscillator ) that is
supposed to emit 10MHz accurate to a tiny fraction of a Hertz. Will be
using that to calibrate the frequency counter. But for the nonce...
... I redid all 8 CW BFO settings - first wrote down what they were -
by holding a tablet up to the K2 and running spectrum analyzer
software I got off Google Play. I centered each passband at about 600Hz.
The rig is transformed. Now all of the selectivity settings are
completely usable. Wish it had been like this yesterday. And I wish
there were more signals to listen to today :).
- Jerry KF6VB
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