Re: LF: 500kHz propagation

To:	[email protected]
Subject:	Re: LF: 500kHz propagation
From:	Gary - G4WGT <[email protected]>
Date:	Thu, 29 Oct 2009 10:52:43 +0000
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Hi Rik, LF,

I have noticed the same here on my 24/7 WSPR monitor station.

The last 3 days shown below :-

27/10/2009

Last decode - 0826utc

First decode - 1552utc

28/10/2009

Last decode - 0826utc

First decode - 1442utc

29/10/2009 (today)

Last decode - 0952utc

73,

Gary - G4WGT - IO83qo.

2009/10/29 Rik Strobbe <[email protected]>

Over the past days I monitored the G4JNT WSPR beacon 24/24.
During daytime I have a weak but consistent copy of Andy's signal, average -24dB with ups and down of some dB.
During nighttime the signal is -10dB on average, with the usual deep QSB (peaking -1dB, dips down to -20dB).
But the most interesting observation is that in the afternoon the first peaks (from -24dB up to -8dB) occur as early as 15:45 UTC.
This is almost 1 hour before sunset (16:37 UTC) and almost 1.5 hours before the D-layer (at mid point) goes into darkness.

73, Rik ON7YD - OR7T

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