[Lowfer] VLF activity on 26 kHz - 1

[Garry]

Interesting signals here in NE IL this afternoon on 26 kHz. Not the 
usual TACAMO MSK and RTTY but initially a wide, flat spectrum. This was 
followed by a pair of carriers at ~ 26 kHz +/- 200 Hz. In case that was 
RTTY I tried MultiPSK with settings of 425 and 450 Hz bandwidth at 
several buad rates to no avail. Finally, those carriers became modulated 
over individual bandwidths of ~ 75 Hz. While this was going on E6 plane 
with callsign SHADO23 flying at 28,000 ft was noted at the border of TN 
and NC, i.e. not too far from my reception QTH. Given the strength of 
the signal that plane could be the source. But what it was sending was 
not the TACAMO signals often present at UHF, nor was the frequency one 
I've copied anything before. 3 additional cropped captures will follow 
in additional emails.
-- 
73, Garry, K3SIW, EN52ta, Elgin, IL
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