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Re: LF: 500kHz G4NT WSPR beaconing

from [Roger Lapthorn] [Permanent Link][Original]
To: [email protected]
Subject: Re: LF: 500kHz G4NT WSPR beaconing
From: Roger Lapthorn <[email protected]>
Date: Mon, 26 Oct 2009 21:50:24 +0000
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Thanks Clemens.

Yes, I think you are right and I need to significantly reduce the losses in my antenna and ground system next. I cannot start this now for several days (grandchildren here with us) but hope to start on this next week.  My theoretical calculations suggest the ground losses must be very high and the effective height of my (very short) MF antenna very small. Improvements to my ground system yesterday (a few short radials and a second ground spike) did not make any different to the antenna current suggesting other factors/losses may be masking these improvements.

So far I have had reports now from 18 different stations in 4 countries with GM4SLV the best DX at 896kms (several times). I think John must have a very quiet QTH up in the Shetland Isles.

Thanks again for listening and before long I hope you manage to hear me.

73s
Roger G3XBM
http://g3xbm-qrp.blogspot.com/



2009/10/26 Clemens Paul <[email protected]>
Roger,
 
Sri,no copy last evening.
Only G4JNT (1055km) and G0NBD (1245km) .
I didn't see even a faint trace on my Perseus SDR.
From my experience I know that I can decode WSPR sigs
even if they are very weakly visible on Perseus
but what I can't see I can't decode.
I believe at least ~10dB more are necessary to reach central Europe.
 
73
Clemens
DL4RAJ
----- Original Message -----
Sent: Sunday, October 25, 2009 7:34 PM
Subject: Re: LF: 500kHz G4NT WSPR beaconing

Let us hope you manage to hear my signal too later in the evening Clemens.

73s
Roger G3XBM

2009/10/25 Clemens Paul <[email protected]>
 2009-10-25 18:00   G4JNT   0.503850   +12   0   IO90iv   0.2   DL4RAJ   JN68kj   1055   100 
 
This evening looks promising.
 
73
Clemens
DL4RAJ



--
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http://www.g3xbm.co.uk
G3XBM    GQRP 1678      ISWL G11088


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http://www.g3xbm.co.uk
G3XBM    GQRP 1678      ISWL G11088
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