[Lowfer] XES Wolf copy & Question

[Andy - KU4XR]

Thanks John:

I bookmarked the link you gave, lots of reading. I had a reason
for asking, The nut-shell version is; I wanted to make sure that
those numbers were S/N Ratios. As you saw, my copy was good, and 
climbing. Frequency was as close as it could be, Tuned 137.440 ,
Signal Readout .977 high or 137.441 KHz. During the decode. I 
switched filters every 2 lines to see what happened to those #'s.
Started at 10Hz, 80Hz, 200Hz, 500Hz, 2.4KHz, 6KHz, and 12KHz.
Lines 18 thru 28 was back at 10Hz and the Pre-Filter engaged.
I never lost copy, and the #'s continued to climb.
When WOLF started a new decode, I started at 12KHz, and went down 
every 2 lines until at 10Hz with Pre-Filter. It never locked on.
I don't remember who told me that WOLF, unlike WSPR builds up
cumulative copy, and dosen't discard it. WSPR starts over each
2 minute decode. So, once WOLF decodes a signal, it will keep
outputting that every frame as long as it can sense that the
signal it locked onto is still there. Is This Correct ??
Once it locked on to your signal; even at 12KHz BW and terrible
noise level, It never lost lock.  That's the observation from
my end, along with the curiousity.

73 :::


Andy - KU4XR - EM75xr - Friendsville, TN.
LOWfer Beacon " XR " @ 185.29866 KHz ( QRSS-60 )
Coordinates:  N:  35* 43' 54" - W:  84* 3' 16"
http://www.myspace.com/beaconxr


--- On Thu, 11/12/09, John Andrews <w1tag at charter.net> wrote:

> From: John Andrews <w1tag at charter.net>
> Subject: Re: [Lowfer] XES Wolf copy & Question
> To: "Discussion of the Lowfer (US, European, & UK) and MedFer bands" <lowfer at mailman.qth.net>
> Date: Thursday, November 12, 2009, 9:06 PM
> Andy,
> 
> The "q:" numbers are signal to noise ratio in dB. To quote
> from the 
> original WOLF docs:
> 
> "Two values are displayed for 'q': reference S/N and data
> S/N, both 
> measured in dB on the 10 BPS baseband signal.
> Unfortunately, the data 
> S/N is only valid when copy is correct. Values above -5
> usually result 
> in good copy; values below -6 usually result in garbage.
> The reference 
> S/N, if steadily increasing, is the best sign of a valid
> signal. Correct 
> copy usually occurs by the time -4 is reached. But with
> some settings, 
> WOLF can choose different frequencies, phases, and timings
> for each 
> frame, and will select apparently "good" matches from the
> noise. If 
> those cases the displayed S/N may need to reach -1 before
> good copy is 
> seen. "
> 
> My experience bears that out. On a weak signal, the first q
> number may 
> start at -10 or less, but as the copy builds up, the number
> will rise 
> (assuming that the signal isn't clobbered by fading). When
> it gets in 
> the range of -4 or -3, correct copy will probably start.
> All of this 
> assumes that the decoder is locked onto a signal, which
> will result in 
> multiple lines with the same frequency.
> 
> The original WOLF docs by Stewart Nelson, KK7KA, can still
> be found at:
> http://www.scgroup.com/ham/wolf.html
> The current WOLF GUI by DL4YHF has simplified a lot of
> this, but 
> Stewart's WOLF Ver. 0.61 is still the core program.
> 
> John, W1TAG
> 
> Andy - KU4XR wrote:
> > What do the 2 sets of numbers before the callsign
> represent ??
> > 
> > 
> > 2009-11-13 00:03:03 >WOLF10  -r 11110.900 -f
> 550 -t 1.0 -w 0.0000
> > t:  24 f: 0.801 a:-0.3 dp:122.6 ci: 2 cj:249
> S2AATS.*F//BLAD ?
> > t:  48 f: 0.919 a:-1.5 dp:120.4 ci: 4 cj: 46
> XVKMX0TJTV6I*I4 ?
> > t:  96 f: 0.494 a:-0.7 dp:117.2 ci: 7 cj:368 5 S
> B5G50 IM XY ?
> > t: 192 f: 0.420 pm: 5913 jm:673 q:-13.5 -7.1
> UDO62A90LML6VVF ?
> > t: 288 f: 0.723 pm:10070 jm:542 q:-11.7 -8.8 I7M7R
> 4W9EMWWKI ?
> > t: 384 f: 0.967 pm:90081 jm:241 q: -0.2 -1.3 WD2XES
> 137.441K -
> > t: 480 f: 0.967 pm:96457 jm:241 q:  2.9  2.9
> WD2XES 137.441K -
> > t: 576 f: 0.977 pm:147840 jm:241 q:  3.0 
> 3.1 WD2XES 137.441K -
> > t: 672 f: 0.977 pm:148108 jm:241 q:  2.0 
> 2.4 WD2XES 137.441K -
> > t: 768 f: 0.977 pm:149964 jm:241 q:  2.1 
> 1.9 WD2XES 137.441K -
> > t: 864 f: 0.977 pm:149982 jm:241 q:  2.0 
> 1.6 WD2XES 137.441K -
> > t: 960 f: 0.977 pm:150068 jm:241 q:  2.1 
> 1.6 WD2XES 137.441K -
> > t:1056 f: 0.977 pm:150089 jm:241 q:  2.1 
> 1.5 WD2XES 137.441K -
> > t:1152 f: 0.977 pm:150126 jm:241 q:  2.0 
> 1.3 WD2XES 137.441K -
> > t:1248 f: 0.977 pm:150180 jm:241 q:  2.1 
> 1.3 WD2XES 137.441K -
> > t:1344 f: 0.977 pm:150188 jm:241 q:  2.1 
> 1.3 WD2XES 137.441K -
> > t:1440 f: 0.977 pm:150191 jm:241 q:  2.2 
> 1.2 WD2XES 137.441K -
> > t:1536 f: 0.977 pm:150200 jm:241 q:  2.2 
> 1.2 WD2XES 137.441K -
> > t:1632 f: 0.977 pm:150206 jm:241 q:  2.2 
> 1.2 WD2XES 137.441K -
> > t:1728 f: 0.977 pm:150230 jm:241 q:  2.2 
> 1.0 WD2XES 137.441K -
> > t:1824 f: 0.977 pm:150335 jm:241 q:  2.0 
> 0.8 WD2XES 137.441K -
> > t:1920 f: 0.977 pm:150719 jm:241 q:  1.5 
> 0.3 WD2XES 137.441K -
> > t:2016 f: 0.977 pm:151380 jm:241 q:  1.2 
> 0.0 WD2XES 137.441K -
> > t:2112 f: 0.977 pm:151619 jm:241 q:  1.2 -0.1
> WD2XES 137.441K -
> > t:2208 f: 0.977 pm:151774 jm:241 q:  1.5 -0.3
> WD2XES 137.441K -
> > t:2304 f: 0.977 pm:152035 jm:241 q:  1.4 -0.4
> WD2XES 137.441K -
> > t:2400 f: 0.977 pm:153437 jm:241 q:  1.3 -0.7
> WD2XES 137.441K -
> > t:2496 f: 0.977 pm:154111 jm:241 q:  1.1 -0.9
> WD2XES 137.441K -
> > t:2592 f: 0.977 pm:154853 jm:241 q:  0.9 -1.3
> WD2XES 137.441K -
> > t:2688 f: 0.977 pm:155059 jm:241 q:  1.0 -1.5
> WD2XES 137.441K -
> > t:2784 f: 0.977 pm:155214 jm:241 q:  1.0 -1.6
> WD2XES 137.441K -
> > t:2880 f: 0.977 pm:155278 jm:241 q:  0.7 -2.0
> WD2XES 137.441K -
> > t:2976 f: 0.977 pm:156493 jm:241 q:  0.6 -2.3
> WD2XES 137.441K -
> > t:3072 f: 0.977 pm:156727 jm:241 q:  0.5 -2.5
> WD2XES 137.441K -
> > t:3168 f: 0.977 pm:156733 jm:241 q:  0.5 -2.5
> WD2XES 137.441K -