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Re: LF: DUAL BEACON WSPR + OPERA 500Khz

To: "[email protected]" <[email protected]>
Subject: Re: LF: DUAL BEACON WSPR + OPERA 500Khz
From: M0FMT <[email protected]>
Date: Sat, 14 Jul 2012 19:52:44 +0100 (BST)
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Hi Graham
 
Is there any activity on the 28.076/8 op QRG? been monitoring, band open, but nothing? Any comments?
73 es GL Pete M0FMT IO91UX
From: Graham <[email protected]>
To: [email protected]
Sent: Saturday, 14 July 2012, 1:09
Subject: Re: LF: DUAL BEACON WSPR + OPERA 500Khz

Ok Stefan,
 
QRT  , next to  look at the  reports  , I think  tonight  , minimum   decode  levels  are very  close ,  the  longer  OP modes are much lower , but the  qsb on 500 tends to  prevent  gain being  made by  extended  times
 
Opera   was  designed to  be  sent  by a  normal   CW  Tx   , psk/fsk    has a  dB  advantage , but  not  all  stations  can send   fsk or  psk, , especially  on  136  .. Without the  racal  ma1723 , it  would  be  difficult to  use fsk or  psk  on  500  , ( not that  psk  is  any  use on 500  .. too  much  phase  shifting ) 
 
Not  sure on the  wspr  settings , I dont  think the  software  can  produce   12 Khz  ,   stations  use  ,pic-dds  , that  may  be a  way  ahead ?
 
But tonight , using the  m-delt4    sound  card , I found the    mixer  monitor  could  be  used to  combine  2  channels  , so  the  audio  quality  was much better  than  in the  past, with  no  IMP  showing  ...
 
73 -G.

Sent: Friday, July 13, 2012 11:26 PM
Subject: Re: LF: DUAL BEACON WSPR + OPERA 500Khz

Hi Graham, LF/MF,

Nice setup to see which mode is "better". Rik/ON7YD has done some tests a few months ago i remember. Now you need many receiving stations who monitor these 2 modes to the same time as well.
Compared to WSPR i clearly find Opera an advantage regarding the ease of keying the PA without the need of FSK.
On LF i could run both modes since i have the IQ upconverter (can WSPR set to an output frequency of 12.5 kHz?? (to be mixed with 125 kHz)) but on MF i would need to extend my setup...

I really would like to join in tonite but i can't :-(((

73, GL, Stefan/DK7FC



Am 13.07.2012 20:20, schrieb Graham:
No  cheating  , carriers  are  identical  !
 
tnx  Gary  for  grabber 
 
73 -G. 
 
 
 

From: Graham
Sent: Friday, July 13, 2012 7:06 PM
Subject: LF: DUAL BEACON WSPR + OPERA 500Khz

All,
 
DUAL  BEACON   WSPR + OPERA   500Khz
 
Running   dual  beacon  , parallel   Tx times ......Tx   100%   duty cycle
 
Dial  set   500.000  Khz  USB 
 
73 - Graham
G0NBD
 
 
 


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