[Lowfer] XES Wolf copy & Question

Thu Nov 12 21:06:02 EST 2009

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 -
> 
> 
> 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
> 
> 
> 
> 
> 
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