Evan -
No WWV here with my indoor antenna, so using an Elecraft XG-1 signal generator on 7.040 MHz. Turned
it on for 10 minutes, although I don't think it moves much as the internal dissipation is so low.
Then turned on the R-7, cold start, and tuned in the XG-1 for a ~600 Hz tone. Using Spectrogram.
It's been running for 20 minutes so far and has smoothly increased a little less than 200 Hz. No
sign of leveling off yet.
After an hour, it's stopped. Drifted ~600 Hz from cold start, and the last 15 minutes it's moved 5
Hz. I don't know how to go back on the 'strip chart' without stopping Spectrascope, so can't tell
exactly where it 'stopped'. I only have about 15 minutes on-screen, but once I have the file, I can
scan through it.
I set the 'range' from about 400 - 1100 Hz on screen.
73, Garey - K4OAH
Glen Allen, VA
Drake 2-B, 2-C/2-NT, 4-B, C-Line&
TR-4/C Service Supplement CDs
<www.k4oah.com>
K9sqg wrote:
Fellow Drake Enthusiasts,
The discussion of the VFO stabilizers prompted me to describe what I
have observed about 7 line PTOs over the past 25 years or so.
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