Return to KLUBNL.PL main page

rsgb_lf_group
[Top] [All Lists]
<prev [Date] next>
[Advanced]
 <prev [Thread] next>

Re: LF: New Version OPERA , with FADE graphical indication

from [Alan Melia] [Permanent Link][Original]
To: <[email protected]>
Subject: Re: LF: New Version OPERA , with FADE graphical indication
From: "Alan Melia" <[email protected]>
Date: Wed, 2 Oct 2013 22:32:42 +0100
Authentication-results: mx.google.com; spf=neutral (google.com: 195.171.43.25 is neither permitted nor denied by best guess record for domain of [email protected]) smtp.mail=[email protected]; dkim=pass (test mode) [email protected]
Delivered-to: [email protected]
Dkim-signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=btinternet.com; s=btcpcloud; t=1380749565; bh=FM0MyPyLYXvFTaFqbdtVPqxPWp2mH0PT3GcHRV+8W5I=; h=Message-ID:From:To:References:Subject:Date:MIME-Version:Content-Type:X-Mailer; b=MlezhHv+Oo1Rmbqj+eQ5DQzBdjtV9Tyvkemh2bzmhYRdauhM7v9VhWB58raEXxSX6j1/1B0jBrAnePhNIO4BeEV9elNv6wJ6GUqIioymwxltUW0PnmGoMcCcAXopAtaQUfYxOJH8xbwhCkGxZ6I2NccTF4BvMDBor5WFipcsxdQ=
References: <FCF0400CE4C54097BC5787701EFAC4B9@AGB> <D5AE5BBAB6EB4F84957C5822C17D79C0@AGB> <34F7E253CCF5444FB496B07AA89435A3@AGB>
Reply-to: [email protected]
Sender: [email protected]
Hi Grahan that would seem to follow the fade at 300mi is probably due to groundwave. This is a lot weaker at 1000mi and the skywaves are relatively stronger. The depth of the fade is a function of the strength of the two paths whose relative phase is changing. If the amplitudes are equal then there is a total "wipeout" ....I guess 10% fade says one path is 20dB stronger than the other.
 
Alan
G3NYK
 
----- Original Message -----
From: Graham
Sent: Wednesday, October 02, 2013 10:04 PM
Subject: Re: LF: New Version OPERA , with FADE graphical indication

Long  range DX  1000  miles  , has less  Fade  than  short  330  miles  , ?
 
 
IZ7SLZ de SWL-G6AVK (England): Op4 1078 mi F:10% -24 dB in Essex with 50w + Inverted-L
 

PA3ABK de SWL-G4WGT (England): Op4 331 mi F:21% -23 dB in Chorley, IO83qo with 40w +

 
 
 
 

From: Graham
Sent: Wednesday, October 02, 2013 9:53 PM
Subject: Re: LF: New Version OPERA , with FADE graphical indication

 
New data  added  to the  web linked  reports  as  well ,  this  showing   10% of the  signal was  'not  decoded' and  at   -24 dB  would  support  a   ROS-MF-2
  'rtty'    qso 
 

IZ7SLZ de SWL-G6AVK (England): Op4 1078 mi F:10% -24 dB in Essex with 50w + Inverted-L

G,
 
 
 
 

From: Graham
Sent: Wednesday, October 02, 2013 7:50 PM
Subject: LF: New Version OPERA , with FADE graphical indication

New Version OPERA , with FADE  / Time line  recording
 
Latest  version provides a graphical  indication  of the  QSB/Fade  on the  signal  along the  time  line
with a  % Fade  indicated  for  each  decode  , all  other  functions   remain as  previous  issues 
there is  no  change to the  Tx format 
 
 
There seems  to be a  problem  using  IE  to  download  at the  moment  , FireFox  or Chrome  are 'ok'
 
 
 
 
 
 
 
 
 
[More with this subject...]
<Prev in Thread] Current Thread [Next in Thread>
Previous by Date:  Re: LF: SM6BHZ Bad but not serious news, Markus Vester
Next by Date:  Re: LF: New Version OPERA , with FADE graphical indication, Graham
Previous by Thread:  Re: LF: New Version OPERA , with FADE graphical indication, Graham
Next by Thread:  Re: LF: New Version OPERA , with FADE graphical indication, Graham
Indexes:  [Date] [Thread] [Top] [All Lists]