Received-SPF: neutral (google.com: 193.82.116.20 is neither permitted nor denied by best guess record for domain of owner-rsgb_lf_group@blacksheep.org)
Date: Wed, 16 May 2007 16:12:58 +0200
To: rsgb_lf_group@blacksheep.org
From: Dick Rollema <dickrollema@casema.nl>
In-Reply-To: <BAY124-F408E3FB582C704B227AB12CF3D0@phx.gbl>
References: <20070515120038.680B75513@mta-fe.casema.nl>
 <BAY124-F408E3FB582C704B227AB12CF3D0@phx.gbl>
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Message-Id: <20070516141229.6A99149E1@mta-fe.casema.nl>
Subject: RE: LF: FS measurements
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Status: O

Dear Laurence,

Yes, I knew that the station at 135.43 kHz=20
sending info similar to DCF 38 is in  Hungary. But I do not know its call=
 sign.

At my location the measured signal from DCF38=20
(near Magdeburg) is 20 dB stronger that the one from the station near=
 Budapest.
The distances of the stations from my location are about 598 resp. 1157 km.

The CCIR propagation graph for "Land"=20
(conductivity 0.03 S/m, di=EBlectric constant 40)=20
predict a difference of only 12 dB, assuming that=20
both stations have the same EMRP. But the=20
assumption that the ground constants of the two=20
paths are identical may be entirely wrong and the=20
radiated powers could be different as well.

The difference in distance of the two stations,=20
"seen" from Shanghai, is negligible, I think. So=20
the fact that you receive Budapest stronger than=20
Magdeburg could mean that Budapest has higher=20
power. But you must be receiving both stations=20
via sky wave and this involves so many=20
unpredictable factors that conclusions as to power are debatable.

73, Dick, PA0SE

At 14:11 15-5-2007, you wrote:
>Dick that 135.4 (135.43) maybe Budapest power=20
>control with the same signature as DCF39.
>Its 10-15dB stronger here in Shanghai than DCF39/38..
>
>LAurence
>
>
>>
>>
>>The station at 135.4 kHz is similar to DCF 38.
>>
>>I have not recorded the FS of MSF at Rugby.
>>
>>My location is at Leiderdorp,  52=B0  09'  37.21" N;  04=B0  31'  23.52"=
 E.
>>
>>73, Dick, PA0SE
>
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