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Re: LF: WANTED 8KHz OP4H OPERA TESTER’S

To: <[email protected]>
Subject: Re: LF: WANTED 8KHz OP4H OPERA TESTER’S
From: "Graham" <[email protected]>
Date: Wed, 2 May 2012 19:22:15 +0100
Importance: Normal
In-reply-to: <[email protected]>
References: <6AF9FA27D80A49C4BC95967CB103D19D@AGB> <F61D4EABBEDE4E9AA9CC4C561D398EEC@AGB> <D5B97D7B63914B19A6406CE6706E91CD@AGB> <[email protected]> <4CCEC10479A04AFF91E1823373CA6C00@AGB> <[email protected]>
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If you leave the  garden  gate  a-jar that should  tidy the  signal up on its way  past ?
 
-44 . that's  the  Op  reported level ? so  could  be    -50 / -52 in  wspr  levels .. should  be able to  loose  45% , but  don't  forget the  s/n is the  average  over the  time line , so for a full  capture, you  could be  ~~ 10 db over the limit ??
 
Are you  using  a  pre-amp  etc  of just  directly  into the  sound card Ed, ?.  some  questions in the  news  group  over  filters etc , I think  one of the  simple  pre-amps  may  be the  best option ??
 
Tnx -G..

From: qrss
Sent: Monday, April 30, 2012 11:37 PM
Subject: Re: LF: WANTED 8KHz OP4H OPERA TESTER’S

OK Graham

Well you wouldn't want to radiate an untidy signal.

Second decode was -44dB, about 10dB / Noise in 46mHz. Signal level varied and about 20% data lost in a block, XYL re arranged the configuration of the dining table antenna, they just don't understand!

73 Eddie G3ZJO

On 30/04/2012 22:23, Graham wrote:
Tnx Ed,
 
Steady carrier, that should be  one of the  advantages of Op  on  8Khz , no  real  problems with  sound card 's  and  frequency  stability !
Look's  like  you  may have  some  signals  from PA soon , not  sure  what's happened  to  all the  UK  Tx  stations , I know  there was a  problem  with  having to  inform  the  met-office  ..


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