Return to KLUBNL.PL main page

rsgb_lf_group
[Top] [All Lists]

Re: LF: Re: Opera v qrs evaluation

To: <[email protected]>
Subject: Re: LF: Re: Opera v qrs evaluation
From: "Graham" <[email protected]>
Date: Tue, 31 Jan 2012 20:07:51 -0000
Importance: Normal
In-reply-to: <3A9A60CAE4EB4355A5B0A30CDA0F450A@JimPC>
References: <006201cce044$06c16f80$0401a8c0@xphd97xgq27nyf> <3A9A60CAE4EB4355A5B0A30CDA0F450A@JimPC>
Reply-to: [email protected]
Sender: [email protected]

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..

--------------------------------------------------
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



<Prev in Thread] Current Thread [Next in Thread>