[Lowfer] VLF ...

[JD]

Thanks for the excellent information, Jay.  Although I presently lack the 
sophistication of Spectrum Lab, I'm pretty sure the one I was receiving the 
other morning was JJI 22.2 kHz.  The frequency was pretty much in the clear 
at that time, and a lot of other Pacific Rim stations were present at good 
strength, but few east of here.

Early yesterday evening I was picking up what both receivers told me was 
22.1, and I'm inclined to believe the one last night was GQD.  Further 
supporting evidence was a distinct lack of other Asian stations at the time, 
and even NWC was much weaker than it was on the morning of the 10th.  On the 
other hand, VTX4 was coming in, weak but distinct on 19.2, which I didn't 
see the other morning, so it's not an open and shut case for GQD.  In 
addition, residual sidebands from TACAMO on 22.6 (20 dB over S9 here) made 
measurement of nearby frequencies a little shaky.

TACAMO was also an intermittent moderately-strong strong visitor on 17.8. 
It was really surprising how wide some of the transmissions were!

NAA was good strength, NLF was strong, and NML was as much as S9+50. 
Somebody quite strong was also occupying most of the spectrum between 
26.2-26.6 kHz.  I didn't spend a lot of time above 30 kHz, but TFK was 
strong on 37.5, NAU was loud and clear on 40.75, and NSY was holding forth 
on 45.9.  JJY 40 was visible but not yet audible at that point, but was 
there when I returned at 9:30 PM.  Before I left the field at 4 AM, JJY was 
up to S7 and DCF77 was running S8.  That's roughly 16 dB below what DCF77 
typically does at that time of night, so that's when I really began to 
suspect I had forgotten to remove the shorting strap for the second session.

(In the pre-buffer days, seeing WWVB at S9 was my standard test for 
operational integrity, but even with the antenna shorted it now comes in 
strong enough to keep the meter pinned.  I may have to find some other 
weaker but consistent signal at the low end of LF to serve that purpose.)

73
John