Hi Wolf and the group,
Unfortunately, in a domestic environment I could not decode your QRPPP
signal on 40m yesterday. Was it on the whole night ?
The beacon went QRT last night (some time after 1800UTC) due to a
tripping ground fault interrupter in my schack. The culprit was found to
be water ingress in a mains extension cord for a car heater. Sorry...
The beacon is now QRV again on 7099.997 / 7099.999 kHz.
Slightly "off-frequency": I am frequently monitoring the VLF range with a
colour azimuth spectrogram as invented / presented by DF6NM. There is a
remarkable change of the azimuth of reception (only a few degrees), which seems to
depend on the time of day, and also on the frequency - for example, the lower part
of the MSK signal arrives from a slightly different direction (+- 1°) than
the upper part. DHO38 on 23.4kHz is only ~100km away from here, so the
groundwave should be dominant, but even there is this strange nighttime effect. On "DX"
signals like NWC (19.8kHz) the effect is not visible.
Hmmm... Sounds interesting. Are your antennas resonant? Can you verify the
effect
by DFing with a single rotatable loop?
73
Johan SM6LKM
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