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Re: LF: T/A OPDS

To: <[email protected]>
Subject: Re: LF: T/A OPDS
From: "Graham" <[email protected]>
Date: Sat, 19 Oct 2013 22:47:10 +0100
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S-
 
Only  -39 !  must  be  all  those  new building  works  !
 
M-
 
What is the  opds  calibrated to ? as Op is  showing  a  stronger  signal  , average  or  peak  ?  , Op32 is  expected to  bottom at  ~ -41 dB
 
G,.  
2013-10-19 19:40:33 DK7FC   5745km 137560.109Hz   3mHz -43.0dBOp 100% 20.3dB
19:40 136 DK7FC de UA0SNV Op32 3568 mi -39 dB in Ust-Ilimsk      =  +2 or +3 dB  over the  limit
 
 
 

Sent: Saturday, October 19, 2013 8:11 PM
Subject: Re: LF: T/A OPDS

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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