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Re: LF: MF tonite BSK31

To: <[email protected]>
Subject: Re: LF: MF tonite BSK31
From: "Graham" <[email protected]>
Date: Thu, 13 Sep 2012 18:06:00 +0100
Importance: Normal
In-reply-to: <[email protected]>
References: <[email protected]> <[email protected]> <F2C19D7523C24D559473A7B02F21F6FF@AGB> <[email protected]>
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Ok Roland
 
That's  a  good  Tx  system  !  much smaller  than  my   Racal  MA1723
 
If you  have  SDR  then  the  ros-mf  data  modes  can be  used directly  with  SDR   , very little  use  has  been made of them  due to the  need for  audio>rf  or  sdr  Tx  drive  ..or  by  using  Transverter
 
These  modes  are  100 Hz B/W    MFSK   ,  MF-2  is the  same  s/n as  wspr  and  MF-7  , the  same data  rate  as  psk32 , but  some  10 to 12 dB  lower s/n ...part of the  ROS data  package  , download  the  same  site  as opera
 
This  was  nearly  a  mistake  as  Joe has the  Rx  set to 7  only  , so  when I switched  to  MF-1  , decodes  stopped , the  MF-7  was a  warm-up  test  !
 
 
Good  luck  with the  trials
 
73-G..

Sent: Thursday, September 13, 2012 5:31 PM
Subject: Re: LF: MF tonite BSK31

Graham,
I am using a Soft Rock SDR transceiver.
I modified a Soft Rock SDR 160m to 500kHz.
 Additionally I am using a CB PA changed to 500kHz with 80 W output. Ok, this is not very linear.
That's means any modulation mode is possible. Why are you asking?

73
Roland

Am 13.09.2012 17:32, schrieb Graham:
Roland
 
Do you  have  transvertor ? can  use  any  audio  based mode ?
 
G..

Sent: Thursday, September 13, 2012 3:17 PM
Subject: LF: MF tonite BSK31

hello MW,
I am transmitting PSK31 on the transmitting frequency 475kHZ (not dial).

It's mainly a test. It's the first PSK31 transmission with this equipment.

73
Roland DL3NDR


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