[Lowfer] 8822 Hz on at 2200Z

[Garry]

Dex,

I got a tantalizing "signal" peak for a couple of hours around noon 
local time (1800Z). A marker from my GPS-locked SLM is a bit low, but 
the "signal" is even lower if the intent is to be exactly on 8822.0 Hz. 
I recall your Nov 30 note where Paul Nicholson reported your signal 0.01 
Hz low, so it's possible the "signal" is really W4DEX.

The attachment is from Spectrum Laboratory using an FFT size of 65K and 
decimating by a factor of 1536. That gives an FFT-bin width of 119 uHz, 
compared to a width of 715 uHz for QRSS1200. The narrow peak I see on my 
SLM marker indicates receiving at such a fine scale is still useful. I 
run ARGO simultaneously and note that as I weaken my marker the sharp 
AGC action causes the detected line to come and go. That's probably why 
Doug, KB4OER gets a punctured copy of your signal when the QRSS rate 
isn't sufficiently slow.

I've noted QSB on the Russian Alpha signals so presume it's also 
possible on your signal. Since you're getting over the Atlantic to 
Europe very well I imagine propagation over land isn't as good as over 
water. The European SWL's probably have better antennas and receiving 
setups too. I should look into tying my soundcard sampling rate to 1pps 
GPS ticks.

I get a major noise floor rise when the furnace runs so I'm trying to 
keep that to a minimum. But who knows what's going on at neighbor's houses.

I've begun running Spectrum Laboratory with an FFT size of 131k. The 
software isn't likely to even acquire by the time you QRT (it will take 
about 5 hours, and even longer for the waterfall to display results), 
but I'll let it run over night and perhaps you'll transmit again tomorrow.

73, Garry, K3SIW

-- 
Garry, K3SIW, EN52ta, Elgin, IL
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