[Lowfer] XES - WOLF in Friendsville - Final Report
jrusgrove at comcast.net
jrusgrove at comcast.net
Mon Mar 4 07:38:11 EST 2013
Andy
Short on time so just a short response. See complete info on WOLF at
http://www.scgroup.com/ham/wolf.html for more information.
The jump in 'jm:' (framing) shows that the sound card sampling rate is not calibrated. Assuming the
transmitting station sound card is calibrated (as we know it is in John's case) this column should
remain steady all the way down the page. This is a separate issue from f: (frequency) reading the
correct frequency. While one can play with the sampling rate and get f: to read 0.000, this is not
what should be done. WOLF will tolerate some frequency error with little impact on decoding ability.
Correct framing is a bigger deal and is what sound card calibration is used to correct. Looking at
the numbers to the right of jm: one can see copy 'building' and then fall apart right before jm:
jumps. Since the signal being received was so strong WOLF had no problem working through the issue.
It's unlikely that a truly 'weak signal' would have decoded with that sampling rate error.
Jay W1VD WD2XNS WE2XGR/2
----- Original Message -----
From: "Andy - KU4XR" <ku4xr at yahoo.com>
To: " European & UK) and MedFer bandsDiscussion of the Lowfer (US" <lowfer at mailman.qth.net>
Sent: Monday, March 04, 2013 1:01 AM
Subject: Re: [Lowfer] XES - WOLF in Friendsville - Final Report
> Nice clean full run: Can't remember the significance of the
> pm: - jm: - and q: numbers ??
>
> Andy - GN All:
>
> 2013-03-04 05:05:28 >WOLF10 -r 7992.100 -f 551 -t 1 -w 0.0000
> t: 24 f:-0.997 a:-0.4 dp:141.6 ci:13 cj:304 IO6I*YQ5MIK*S18 ?
> t: 48 f:-0.997 a:-0.4 dp:135.8 ci:13 cj:408 U1WKVZXCCH7 8/7 ?
> t: 96 f:-0.996 a:-0.4 dp:129.9 ci:12 cj:408 Z2F0N1WROFFTHEE ?
> t: 192 f: 0.000 pm:12817 jm:307 q: 1.8 2.3 WD2XES 137.441K -
> t: 288 f: 0.000 pm:32588 jm:307 q: 5.5 4.9 WD2XES 137.441K -
> t: 384 f: 0.000 pm:44070 jm:307 q: 6.0 6.2 WD2XES 137.441K -
> t: 480 f: 0.000 pm:47386 jm:307 q: 6.3 6.1 WD2XES 137.441K -
> t: 576 f: 0.000 pm:50604 jm:307 q: 6.8 6.7 WD2XES 137.441K -
> t: 672 f: 0.000 pm:56787 jm:307 q: 7.5 7.5 WD2XES 137.441K -
> t: 768 f: 0.000 pm:59127 jm:307 q: 8.3 8.2 WD2XES 137.441K -
> t: 864 f: 0.000 pm:60250 jm:307 q: 8.7 8.7 WD2XES 137.441K -
> t: 960 f: 0.000 pm:60271 jm:307 q: 8.7 8.5 WD2XES 137.441K -
> t:1056 f: 0.000 pm:61932 jm:308 q: 8.8 8.6 WD2XES 137.441K -
> t:1152 f: 0.000 pm:66689 jm:308 q: 9.3 8.9 WD2XES 137.441K -
> t:1248 f: 0.000 pm:70076 jm:308 q: 9.9 9.6 WD2XES 137.441K -
> t:1344 f: 0.000 pm:71340 jm:309 q: 7.4 6.5 WD2XES 137.441K -
> t:1440 f: 0.000 pm:89948 jm:309 q: 8.3 7.2 WD2XES 137.441K -
> t:1536 f: 0.000 pm:102695 jm:309 q: 8.9 8.0 WD2XES 137.441K -
> t:1632 f: 0.000 pm:112769 jm:309 q: 9.8 8.7 WD2XES 137.441K -
> t:1728 f: 0.000 pm:118293 jm:310 q: 6.4 5.2 WD2XES 137.441K -
> t:1824 f: 0.000 pm:145875 jm:310 q: 7.2 6.2 WD2XES 137.441K -
> t:1920 f: 0.000 pm:157210 jm:310 q: 7.8 6.9 WD2XES 137.441K -
> t:2016 f: 0.000 pm:161686 jm:310 q: 8.1 7.3 WD2XES 137.441K -
> t:2112 f: 0.000 pm:162819 jm:310 q: 8.4 7.7 WD2XES 137.441K -
> t:2208 f: 0.000 pm:163162 jm:310 q: 8.6 8.0 WD2XES 137.441K -
> t:2304 f: 0.000 pm:163487 jm:310 q: 8.9 8.5 WD2XES 137.441K -
> t:2400 f: 0.000 pm:163732 jm:310 q: 8.8 8.5 WD2XES 137.441K -
> t:2496 f: 0.000 pm:164073 jm:310 q: 8.2 8.0 WD2XES 137.441K -
> t:2592 f: 0.000 pm:164902 jm:310 q: 8.3 8.0 WD2XES 137.441K -
> t:2688 f: 0.000 pm:165096 jm:310 q: 8.2 7.8 WD2XES 137.441K -
> t:2784 f: 0.000 pm:165158 jm:310 q: 8.3 7.7 WD2XES 137.441K -
> t:2880 f: 0.000 pm:165326 jm:310 q: 8.2 7.4 WD2XES 137.441K -
> t:2976 f: 0.000 pm:165333 jm:310 q: 8.1 7.1 WD2XES 137.441K -
> t:3072 f: 0.000 pm:165334 jm:310 q: 7.7 6.5 WD2XES 137.441K -
> t:3168 f: 0.000 pm:165444 jm:310 q: 7.6 6.5 WD2XES 137.441K -
>
>
>
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