Message-ID: <002a01c39baa$81785b40$3f2965d5@oemcomputer>
From: "Johan Bodin" <sm6lkm.jbeab@swipnet.se>
To: rsgb_lf_group@blacksheep.org
References: <28.3f423925.2cccefb1@aol.com>
Date: Sun, 26 Oct 2003 11:14:08 +0100
MIME-Version: 1.0
Subject: Re: LF: DFCW beacon moved to 40m
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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