[A-DX] {dxld} Re: VOA Radiogram, Aug 29-30

[Roger]

Am 29.08.2015 um 19:25 schrieb David Smith  [dxld]:
>
> My issue appears to be fading rather than noise, so as expected the 
> 2000Hz-centred image was no cleaner than the 1500Hz-centred one, 
> 1600-1630 Saturday (it was noisier due to more fading).
>
> 73 David M0OSA
>



That's my impression, too.
As I wrote here:
http://www.rhci-online.net/radiogram/VoA_Radiogram_2015-08-29.htm#VOA
"..The location of the MFSK-mode in the AF area does not have any 
significant influence on the quality of the images.
The horizontal noise stripes originate from instantaneous fading dips 
and this affect the entire decoded audio-range.
If higher AF-frequencies are used, the risk of QRM influences from 
adjacent channels maybe increases,
when demodulation in pure AM."


roger