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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 -----
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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