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LF: Re: Re: 500kHz WSPR Beacon

from [mal hamilton] [Permanent Link][Original]
To: <[email protected]>
Subject: LF: Re: Re: 500kHz WSPR Beacon
From: "mal hamilton" <[email protected]>
Date: Mon, 22 Dec 2008 11:30:14 -0000
References: <000701c962f1$b79b04c0$4201a8c0@home> <016901c963c8$1c543720$8d01a8c0@JAYDELL> <[email protected]> <004501c963cf$24a20db0$8d01a8c0@JAYDELL> <000901c96356$9dffe3e0$4201a8c0@home>
Reply-to: [email protected]
Sender: [email protected]
NO WE DO NOT WANT THE 3 KHZ AVAILABLE ON 500 SWAMPED WITH UNATTENDED BEACONS TO THE DETRIMENT OF THOSE IN REAL TIME QSO'S You are not doing anything that cannot be done on CW or qrs cw, which takes up a lot less bandwidth. There is plenty of spectrum space available on the other MF band ie 160 metres for your experiments. Sri Jim but the beacon business is getting out of hand, especially unattended. If there is a QRM problem there is noone about to rectify the situation and QSY like one does in real time QSO activity. This band needs a rething if Beacons are to continue and probably some input to OFCOM for their observations. An odd beacon transmission is not objectional but proposing to swamp the 500 khz slot with automated modes is. In the early days of negiotations with OFCOM the proposed and acceptable mode was to be CW and variations thereof ie qrs, in keeping with the traditions of the past use by the Marine service. They did relent and permit other modes but did not intend the band to be swamped with unattended beacons. 

de Mal/G3KEV
----- Original Message ----- From: "James Moritz" <[email protected]> 
To: <[email protected]>
Sent: Sunday, December 21, 2008 10:26 AM
Subject: LF: Re: 500kHz WSPR Beacon



Dear Mark, LF Group,

Thanks for the info on reception of the WSPR beacon. It was shut down at
about 0830utc.
The data from all the receiving stations out as far as TF3HZ at about 1800km 
is so far quite similar, with the SNR figures showing deep fades, as one
would expect. Curiously, there does not seem to be a major difference in the 
SNR figures recorded at different distances.

So far, both myself and previously G0NBD have been copied in the USA using
WSPR - I think this is both the stations that have actually tried, and
positive reports have come within a couple of attempts, so this looks like a 
quite viable mode for transatlantic beacons. Although the band allocations
do not align between UK and US, I think it should be possible to operate
split-frequency to produce a bi-directional trans-atlantic WSPR beacon
network. Anyone interested?

Cheers, Jim Moritz
73 de M0BMU





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