[Lowfer] 8957 Hz

[Garry Hess]

Dex, it takes several hours for my spectrum laboratory waterfall to 
begin displaying results using FFT=131k and decimating by 512. That 
gives a noise equivalent bandwidth of about 250 uHz, much better than 
QRSS1200. ARGO at that rate isn't showing anything definite other than 
my SLM reference signal at 8957.1 Hz, but spectrum lab does have a 
lonely line at about 8957.008 Hz. That's with an eprobe/SDR-IQ with 
external clock tied to GPS, but the soundcard sampling rate probably 
isn't perfect. Things looked good for an hour and a half but then the 
noise floor jumped substantially. Hopefully whatever neighbor turned 
something on will turn it off and go to bed so I can see if the same 
line persists.
-- 
73, Garry, K3SIW, EN52ta, Elgin, IL
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