From: "Dave Sergeant" <dave@davesergeant.com>
To: rsgb_lf_group@blacksheep.org
Date: Mon, 14 Sep 2009 21:31:00 +0100
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Subject: LF: Re: MY first WSPR - by ear ;)
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On 14 Sep 2009 at 21:54, Dennis wrote:

> 
> > >>>I have learnt, WSPR sounds like a slightly rough CW and is
> > >>>transmitted
> > in 
> > >>>4min-blocks. <<<<<
> > 
> > Dennis , That may  not be wspr , wspr  tx time is  120 seconds locked
> > to the exact time , with the  start time on the  00-00 by sound its
> > like a very  slow narrow shift psk signal .....but it is only one 
> > carrier  changing frequency  with  no breaks in the 120 second
> > transmission
> 
> Okay better to say: One cycle seemed to be 4min, divided into abt.
> 115sec TX and 125sec no TX, maybe RX? The beginning of the received
> transmissions were always well within half a second around even minute +
> zero seconds which to me seems to be the strongest hint that is really
> was some wspr what I was hearing. (DCF77-clock beside the speaker)
> 
> Since yesterday I'm looking for a notebook - to run wspr :)
> 
> vy73
> Dennis
> DL6NVC
> 
> 
> 
> 
> 
> 
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