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Sent: Sunday, August 25, 2013 8:22 PM
Subject: LF: New OPERA Modes for new 73K band
73 Khz QRG.
Two New mode's have been added to the
Opera range
OP16 and OP65 ,
OP65 (minutes) is specifically for the 73Khz band
.
The decoding engine utilises a 'Automatic
frequency lock algorithm'
As a result of this , ' Extreme stability'
oscillators for Tx or Rx are not necessary
All other features remain un changed
The OP65 mode has a decode threshold of 6 dB
lower than the
OP16 and WSPR15 systems , but still
retains the ability
to average along the time line , qsb times
on the band
are seen to be much longer than those on 136 KHz
where OP32 is established
Thanks, also, to Philip , the PSK Map ,
has a complimentary
4000m / 73KHz band added to the qrg list
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