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Re: LF: T/A OPDS

from [Stefan Schäfer] [Permanent Link][Original]
To: rsgb_lf_group@blacksheep.org
Subject: Re: LF: T/A OPDS
From: Stefan Schäfer <Stefan.Schaefer@iup.uni-heidelberg.de>
Date: Sat, 19 Oct 2013 21:11:50 +0200
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Markus and OPDS fans,

On the page of UA0SNV, http://dl.dropboxusercontent.com/u/76751319/opds32.txt i just found this text:

UA0SNV OO18JB Opera-32 correlation     http://df6nm.bplaced.net/opera/opds.zip

   date      time   call   distance  frequency bandwidth  snr    correlation

2013-10-19 19:00:33 DK7FC   5745km 137560.111Hz   5mHz -49.1dBOp  81% 15.7dB
2013-10-19 18:20:32 DK7FC   5745km 137560.110Hz   5mHz -44.1dBOp 100% 19.1dB

So it also works over the land path of that distance.

It appears to me that, if the transmitted coherent signal and the receiver is stable, the x-mHz reading says something about the phase stability of the path (?).

Markus, good luck! In an hour or so i willy QSY to 472 kHz CW but will be back at night.

73, Stefan/DK7FC
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