Message-ID: <4DDEC7E5.8040704@iup.uni-heidelberg.de>
Date: Thu, 26 May 2011 23:36:37 +0200
From: =?ISO-8859-15?Q?Stefan_Sch=E4fer?= <schaefer@iup.uni-heidelberg.de>
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Subject: Re: LF: Re: 137 kHz groundwave
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LF,

THanks for all comments!
PA0A gets visible now in YO.

I'm on a short trip in south Spain this weekend, cuagn on monday.
Have a bice weekend.

73, Stefan/DK7FC

Am 26.05.2011 16:31, schrieb Alan Melia:
> Hi Stefan it may be daytime but both of those paths will be skywave even=
 in
> daytime at your power levels. Skywave and groundwave are about the same
> starength at about 700km acording to all the papers. Dont forget the
> waterfals are very non-linear it only takes about 3dB change in signal
> strength to go from T to O+++, also you are seeing S/N which may be high=
er
> in 4X4 although I got a rumble overhead a few minites ago and the rain=
 was
> horizontal.
>
> Alan G3NYK
>
> ----- Original Message -----
> From: "Stefan Sch=E4fer"<schaefer@iup.uni-heidelberg.de>
> To:<rsgb_lf_group@blacksheep.org>
> Sent: Thursday, May 26, 2011 1:51 PM
> Subject: LF: 137 kHz groundwave
>
>
>   =20
>> LF,
>>
>> I just sent some CQ calls on 137.71 kHz and saw the signal at about the
>> same strength on the G4WGT grabber in 910 km, O copy. But there is no
>> trace at all on the YO/4X1RF grabber in 1426 km (in QRSS-10). The 137
>> kHz groundwave seems to "stop" somewhere between these distances, maybe
>> arround 1000km.
>> I'm sure some of you have some better theoretical and/or practical
>> experience about that?
>> Another advantage of VLF,where it's "easy" to reach 2500 km and above
>> anytime :-)
>>
>> 73, Stefan/DK7FC
>>
>>     =20
>   =20