JIm,
I am seeing -32 db decodes, which must be round the lower limit , the
s/n level is referenced to the path-sim software , the readings may be
less than other beacon modes , for the same actual level.
Tnx -G..
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From: "James Moritz" <[email protected]>
Sent: Tuesday, January 31, 2012 6:35 PM
To: <[email protected]>
Subject: LF: Re: Opera v qrs evaluation
Dear Eddie, LF Group,
In an attempt to actually make a comparison, I have set my RX to the
500kHz WSPR frequency, with Spec Lab going also. Since it has been
running, G3ZJO's QRSS3 has been about 10 - 15dB SNR in 0.3Hz FFT
resolution, so say about 6dB above the level needed for "good copy". Opera
has so far reported SNR between -23 and -27dB - I don't know how this
relates to the detection threshold for the Op4 mode. I'll leave it going
for a while...
Cheers, Jim Moritz
73 de M0BMU
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