[time-nuts] Doppler and FMT

quartz55 quartz55 at hughes.net
Thu Sep 19 09:48:19 EDT 2013


I was playing with SpecLab and my TS-2000 just to see how accurately I could measure frequencies in the HF region.  I notice when I set the rx on cw and listen to the 750 Hz output of WWV at 15 or 20 MHz with SL, I get like 2 and sometimes more tracks about 2 Hz apart constantly shifting around. I assume this is Doppler going in and out?  If that's so, how can anyone reasonably expect to measure any ionospheric HF signal in the mHz range?

Dave
N3DT


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