Gary,
if the QSB comes from multiple path propagation (where one of both of
the paths is changing) QSB can be different on different frequencies.
One could even use the QSB/frequency pattern to determine the path changes.
73, Rik ON7YD - OR7T
Quoting Gary - G4WGT <[email protected]>:
Hi LF,
Just made an interesting observation regarding QSB at 508KHz.
For my own benefit I have started running a slow SpecLab showing 500 to
510KHz & capturing for evaluation.
Occasionally the NDB "Z" shows up. The strange thing is that even though the
carrier on 508KHz & the two ID offsets at 509 & 507KHz are relatively close
they each display at different depth of fading or an out of phase fade
pattern.
I am unsure why this should be, any comments please, see capture at link :-
http://myweb.tiscali.co.uk/wgtaylor/ZNDB.jpg
73,
Gary - G4WGT - IO83QP.
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