[A-DX] {dxld} VOA Radiogram, Dec 21-22, tries a different MFSK64 center frequency

[Roger]

Am 21.12.2013 15:48, schrieb :
>
> It may be the holiday season, but the experiments continue on VOA 
> Radiogram.
> Experiments for the weekend of December 21-22, 2013, involve MFSK64 at 
> our usual center frequency of 1500 Hz, versus a center frequency of 
> 1700 Hz.
>
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The conditions here were not very good.
MFSK-128 would have problems here, but the MFSK-64 broadcasts were still 
tough enough for the weak signals.
Whether 1500 or 1700 Hz, which did not make much difference here.
The harmonic signals coming from the transmitter directly and FLDIGI 
sets the filter.
For a receiver with too narrow SSB filter (2 kHz) then could there be 
problems with too high AF.

http://www.rhci-online.de/VoA_Radiogram_2013-12-21.htm

roger