Deep Search ??
?? in this case = Random noise
Nothing mysterious , Dynamic simply engages , should the main decoder
fail, the look-up table of call signs is also maintained via the
web .. s/n levels from -40 dB and better will be decoded by the
original opera system .
The painting by numbers exercise is the same for any of the
correlation detectors produced to date, all have call list's , all
produce false detections , some more than others , Opera go's one
step on and provides a validation exercise ...Its only provided for
477 and 136, where low s/n levels are encountered , all the other bands
are single pass , serial 250 bit data decode.
73-G,
--------------------------------------------------
From: "John Gibbs" <[email protected]>
Sent: Tuesday, January 19, 2016 6:29 AM
To: <[email protected]>
Subject: Re: LF: Opera decode
Thanks all for the further explanation of my mysterious opera dynamic
detection decode. Another opera detection has shown up this evening, and
posting here for info only.
05:24 136 G3XDV de VE7BDQ Op32 Deep Search ?? -43 dB in SOUTHDELTA BC
1471.7 Hz
*********** 19/01/2016 ***********
73 John / VE7BDQ
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