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Re: LF: Re: Throb -2- beacon 503.000

To: <[email protected]>
Subject: Re: LF: Re: Throb -2- beacon 503.000
From: "Graham" <[email protected]>
Date: Tue, 27 Oct 2009 18:54:17 -0000
Importance: Normal
In-reply-to: <004d01ca5734$142a68c0$6402a8c0@e7010>
References: <2A8239B7C5DB475997C9B096CD5F9586@AGB> <004d01ca5734$142a68c0$6402a8c0@e7010>
Reply-to: [email protected]
Sender: [email protected]
Ok Walter
 
Well that is a good  question ! ...
 
Its a  narrow  band  data  mode that  uses a combination of   multi  tones and  amplitude modulation .. the  tones relay the  data  and the  amplitude modulation  provides the  syn-pulse .. so  every character   has its ''own sync pulse''  so the  system has no  'lock up or  sync time'' 
 
I am using  FLDIGI  as the  tx software .........  you  need to be very  close on frequency to decode
 
Tnx - G ..

Sent: Tuesday, October 27, 2009 6:34 PM
Subject: LF: Re: Throb -2- beacon 503.000

Please help, Graham - what is THROB-2?
73
Walter DJ2LF / DI2AG
 
----- Original Message -----
From: Graham
Sent: Tuesday, October 27, 2009 6:28 PM
Subject: LF: Throb -2- beacon 503.000

Running  THROB-2-  Beacon   503.000 khz centre  frequency
 
TX set  502.000 USB
Audio  1000 Hz cent frequency
 
Repeat time 60  seconds 
 
RX  'ON'  during cycle tx 'off'  time
 
Reports / observations  
 
Tnx  Graham
 
G0NBD - IO83LK  




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