Dear LF Group,
I would agree with Alan - just about any DX station seems to be subject to
fading, more so at night but definitely also sometimes during the day. I
have noticed deep fading on signals from quite short distances - DCF39
often fades 20-30dB, also amateur stations over quite short distances such
as PA, ON, and even the more distant UK stations like G3KEV. I had a QSO
last night with PA3CPM, who faded from 569 to inaudible and back to 569
again over a period of about 10 minutes.
The fact that daytime signal levels do vary significantly would seem to
prove there must be some kind of ionospheric propagation during daylight -
I imagine fading at moderate distances could be due to the interaction of
ground wave and sky wave, as the MF broadcasters try so hard to avoid.
Cheers, Jim Moritz
73 de M0BMU
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