[Lowfer] WD2XES 10 mw WOLF

Mon Oct 11 09:51:24 EDT 2010

Bill,

Yes, back in the good old days, you would have had a collection of .wav 
files to analyze to your heart's content. Endless parameter tweaking...

Last night's results may be difficult to compare with the past two 
nights. There is an offshore storm that is still throwing up static 
crashes this morning, and they were loud and continuous last night. This 
morning, I could not copy the 10 milliwatt signal at all, so I cranked 
it back up to 50 mw, where it decodes just fine.

Yes, WOLF is still a very much unfinished project. Bless Wolf Buscher 
for putting the GUI shell around it, but there is still unrealized 
potential in the core program.

I'll put TAG back on before we leave this afternoon.

John, W1TAG

On 10/11/2010 13:35 PM, Bill de Carle wrote:
> At 02:55 PM 10/10/2010 John, W1TAG wrote:
>> Per Bill's suggestion, I dropped the sound card output level by 7 dB,
>> which should give 10 milliwatts from the exciter, as everything is quite
>> linear.
>>
>> Reports are welcome!
>
> Thanks for the test signal John.
> There were no successful decodes at this power level.
>
> As expected, WOLF made its best attempt right around sunup after the
> static subsided.  It found your signal but was unable to gather up
> enough energy to bring out the message.  One has to feel that with
> some tweaking of the settings it might have worked.  I'm not sure I
> have the optimum integration period.  If we assume 1 part per billion
> frequency offset between Rx, Tx, at 137.45 Khz it would take one hour
> to produce a 180-degree phase shift.  With BPSK MS100 it only takes
> +/- 90 degrees to reach the point where adding in older data results
> in more harm than benefit: half an hour or about 19 WOLF frames.  On
> the other hand it would appear the QSB bright-ups early in the
> evening are quite short (less than half an hour), so a shorter
> integration time would be beneficial as it would be less likely to
> contaminate the coherent integration with extraneous noise.  The
> fixed integrate-and-dump blocks in WOLF's current implementation are
> troublesome because the odds of having a full integration period
> coincide optimally with when the SNR peaks are not
> favorable.  Indeed, I got up in the middle of the night to restart
> WOLF in the middle of a block, trying to shift the end of the last
> 3168-second block so it would more favorably overlap the expected SNR
> enhancement around dawn.  I didn't guess all that well on the timing,
> hi!  IMO, the best strategy for making sure you get optimum overlap
> is to use a moving or sliding average instead of a fixed
> integrate-and-dump average.  That's what we did with COHERENT/AFRICA
> and it worked well.
>
> In Stewart's early notes on WOLF he envisioned using the reference
> channel for something more than just establishing
> synchronization.  One thing we might want to try is selectively
> including past frames: keep the ones which improve SNR for the
> frequency we're trying to receive and throw away the others.  Another
> thing is to track the duration of QSB bright-ups for the signal of
> interest and dynamically adjust a sliding average interval for
> optimum enhancement.
>
> Great test, thanks again.  Now I'm kicking myself for not recording
> the overnight run so I'd have something to play with today, hi!
>
> 73,
> Bill VE2IQ
>
> P.S.  In the last block below (covering the dawn enhancement),
> interesting how WOLF prefers a different jm-index value at each end
> of the brightup period.  Any thoughts on why that happens?
>
> 2010-10-11 03:52:30>WOLF10  -r 8100.024 -f 799.983 -t 0.1 -w 0.0000
> t:  24 f:-0.095 a:-1.0 dp: 90.5 ci:11 cj:334 *I47VJBU7/MRKK8 ?
> t:  48 f: 0.080 a: 1.0 dp: 88.3 ci: 8 cj:327 B2 49ISV3W78EBU ?
> t:  96 f:-0.015 a: 1.4 dp: 86.8 ci:11 cj:373 5/TRD9UL63E21ER ?
> t: 192 f:-0.020 pm:40.06 jm: 34 q:-13.1 -7.4 JKGD.Z YLD044F9 ?
> t: 288 f:-0.107 pm:42.87 jm:266 q:-11.7 -8.1 5J5MOUNQE6P.R7L ?
> t: 384 f: 0.039 pm:45.10 jm:153 q:-10.5 -7.4 QSY*8 B9EMCZLQM ?
> t: 480 f:-0.098 pm:50.10 jm:589 q:-10.1 -8.1 Z7A???X5P???EFZ ?
> t: 576 f:-0.020 pm:60.45 jm: 91 q: -9.4 -7.4 14A642D/SC09P53 ?
> t: 672 f:-0.059 pm:66.46 jm:836 q: -8.2 -8.8 E2RLUB1I2IZ4X1I ?
> t: 768 f:-0.020 pm:68.46 jm: 91 q: -8.1 -9.6 XKRZCWOW*Y6I47K ?
> t: 864 f: 0.039 pm:70.85 jm:153 q: -7.7 -8.3 750IS91DNEH8OKO ?
> t: 960 f:-0.078 pm:76.20 jm:551 q: -6.8 -9.1 8WZ*LVJBLIO.WA6 ?
> t:1056 f: 0.088 pm:81.10 jm:346 q: -6.9 -7.9 ..0G*39GTEM1Q32 ?
> t:1152 f:-0.010 pm:85.72 jm:532 q: -5.7 -6.0 Z4DLNTO4/5C4TA9 -
> t:1248 f:-0.068 pm:97.69 jm:364 q: -7.0 -8.5 H2GE/ZF36M3A5D6 ?
> t:1344 f:-0.068 pm:99.75 jm:364 q: -6.7 -9.2 TBWSIW9ET/TNYGG ?
> t:1440 f:-0.068 pm:107.5 jm:364 q: -6.1 -7.9 VTQ24MD28I4HO91 ?
> t:1536 f:-0.068 pm:109.9 jm:364 q: -6.0 -7.9 V.WM2G08*9E9G0W ?
> t:1632 f:-0.068 pm:110.2 jm:364 q: -5.7 -7.5 V.WM2G08*9E9G0O ?
> t:1728 f:-0.068 pm:116.1 jm:364 q: -5.5 -6.3 MTB83 9PEG8RPOA ?
> t:1824 f:-0.068 pm:121.7 jm:364 q: -5.3 -7.7 MTB83 9QHDDPYI6 ?
> t:1920 f:-0.068 pm:122.4 jm:364 q: -4.8 -7.2 MTB83 9QHDDPYI6 ?
> t:2016 f:-0.068 pm:123.2 jm:364 q: -4.5-10.0 Z*5WIOYN69FUZ6H ?
> t:2112 f: 0.000 pm:143.1 jm:693 q: -3.5 -6.8 *OBNZR*1/P3WV6Q ?<--
> t:2208 f: 0.000 pm:143.1 jm:693 q: -3.4 -8.9 FWA16D 5UHXIK7A ?<--
> t:2304 f: 0.000 pm:144.5 jm:693 q: -3.3 -7.8 8S0.E45PC*DOO0Y ?<--
> t:2400 f: 0.000 pm:145.3 jm:693 q: -2.9 -8.4  I874TF./J1T9HX ?<--
> t:2496 f: 0.020 pm:147.1 jm:786 q: -3.0 -7.6 DZOX AEZHRAYFEX ?
> t:2592 f: 0.020 pm:153.2 jm:786 q: -2.7 -6.0 QHU8R0UTEN0LN3* -
> t:2688 f: 0.000 pm:162.6 jm:693 q: -2.3 -7.4 TWZ8EZ*1/P3WV6Q ?<--
> t:2784 f: 0.000 pm:162.9 jm:693 q: -2.2 -8.0 M.15 L4V09DRAGX ?<--
> t:2880 f: 0.049 pm:168.2 jm:201 q: -2.1 -8.2 0LY.J6S/4XGWQS9 ?
> t:2976 f: 0.049 pm:171.2 jm:201 q: -2.1 -7.3 DIF24DD 9L2*E0R ?
> t:3072 f: 0.049 pm:171.9 jm:201 q: -2.0 -8.6 GEE??? W1JAG ZC ?
> t:3168 f: 0.049 pm:173.6 jm:201 q: -1.8 -7.2 DIF24DD 9L2*E0R ?
> [..]
> 2010-10-11 04:45:31>WOLF10  -r 8100.024 -f 799.983 -t 0.1 -w 0.0000
> t:  24 f: 0.022 a: 0.9 dp: 90.0 ci:10 cj:478 I2S6QYHNFTZEZ2B ?
> t:  48 f: 0.024 a: 0.7 dp: 88.8 ci:14 cj:146 9*2386W/LBZBE13 -
> t:  96 f:-0.053 a:-0.3 dp: 83.5 ci: 7 cj:  3 M.9URA50O85T 7* ?
> t: 192 f:-0.088 pm:26.33 jm:370 q:-14.6 -9.0 T O8VO39CPEL4/G ?
> t: 288 f:-0.039 pm:39.71 jm:393 q:-12.4 -7.1 E5WY.C.4YYYJR3* ?
> t: 384 f: 0.010 pm:48.87 jm:573 q:-11.2 -7.5  L9W1/0YENR1*TH ?
> t: 480 f: 0.010 pm:49.03 jm:573 q:-11.0 -7.4 MCMN76HI1KJST*0 ?
> t: 576 f: 0.010 pm:56.72 jm:573 q:-10.2 -6.1 JY9B49 0HOXKP/O -
> t: 672 f:-0.020 pm:58.58 jm:872 q: -9.6 -8.5 9KHC4Z 5J.PIR7C ?
> t: 768 f:-0.020 pm:63.29 jm:872 q: -9.2 -8.1 YU5 K YGPMANC9X ?
> t: 864 f: 0.088 pm:81.62 jm:893 q: -7.8 -8.1 7RC4PIQ1QUZ8LOL ?
> t: 960 f: 0.088 pm:82.01 jm:893 q: -6.9 -9.2 X9ZD8ASNTSOC*1R ?
> t:1056 f: 0.088 pm:90.42 jm:893 q: -6.7 -8.4 7RCZ99HT0976H X ?
> t:1152 f: 0.020 pm:92.63 jm:147 q: -7.1 -7.8 VGWPYQDXZ*GB2GO ?
> t:1248 f: 0.020 pm:104.5 jm:812 q: -6.6 -8.4 OSWBIXQ6LQSBTQ1 ?
> t:1344 f: 0.020 pm:109.7 jm:812 q: -6.5 -8.2 0UCDOHOIIBKSX84 ?
> t:1440 f: 0.059 pm:120.2 jm:830 q: -5.8 -6.6 DU2OJ981OD680RK ?
> t:1536 f: 0.059 pm:120.3 jm:830 q: -5.8 -6.9 DU2OJ981U*GFHA  ?
> t:1632 f: 0.059 pm:125.6 jm:830 q: -5.6 -7.5 U2W/CD9QDF1*HSX ?
> t:1728 f: 0.059 pm:128.1 jm:830 q: -5.2 -7.1 NPEOJ983CD1T9YC ?
> t:1824 f: 0.059 pm:132.0 jm:830 q: -4.8 -8.1 YOC5R.6MZSJ5R 6 ?
> t:1920 f: 0.059 pm:132.5 jm:830 q: -4.9 -9.2 3LZ3KAIQOI*MO6I ?
> t:2016 f: 0.059 pm:135.3 jm:830 q: -4.6 -8.8 3LZ3KAIQOI*MO6I ?
> t:2112 f: 0.020 pm:135.9 jm:812 q: -4.0 -8.4 VXV6DQUSPBVX.T4 ?
> t:2208 f: 0.020 pm:136.2 jm:812 q: -3.7 -8.3 VXV6DQUSPBVX.T4 ?
> t:2304 f: 0.059 pm:144.0 jm:830 q: -4.0 -7.7 AZNDJLU1ZTC*RIC ?
> t:2400 f: 0.059 pm:145.4 jm:830 q: -3.8 -6.0 C4AIJAJX/TC*RIC -
> t:2496 f: 0.059 pm:147.1 jm:830 q: -3.7 -5.9 C4AIJA1UFL4GRIC -
> t:2592 f: 0.059 pm:148.9 jm:830 q: -3.4 -5.9 C4AIJA1UFL4GRIC -
> t:2688 f: 0.059 pm:159.2 jm:830 q: -3.2 -6.1 C4AIJA1UFL4GRIC -
> t:2784 f:-0.068 pm:165.2 jm:821 q: -3.2 -9.8 LQ2VMLIYV36 E3D ?
> t:2880 f:-0.068 pm:169.9 jm:821 q: -3.0 -8.4 WGLT3NM5OLTSL * ?
> t:2976 f: 0.059 pm:173.5 jm:830 q: -2.8 -7.7 1425*NA9/TC*RIC ?
> t:3072 f: 0.000 pm:183.6 jm:307 q: -2.8 -7.9 WSKIKHZGRW4RSCJ ?<--
> t:3168 f: 0.000 pm:187.7 jm:307 q: -2.6 -5.9 *..T7/89CCD*W7D -<--
> [..]
> 2010-10-11 10:52:10>WOLF10  -r 8100.024 -f 799.983 -t 0.1 -w 0.0000
> t:  24 f: 0.006 a:-0.5 dp:108.5 ci:12 cj: 72 TTI80PHCKHXV??? ?
> t:  48 f: 0.002 a:-0.2 dp:106.4 ci: 7 cj: 49 X74B*O3.BSW3*Q5 ?
> t:  96 f: 0.093 a:-0.6 dp:103.8 ci:10 cj: 32 /7E15*MVQ7ZU8V  ?
> t: 192 f: 0.088 pm:301.5 jm:896 q:-14.5 -7.4 1YCI7ABIN*RP/AX ?
> t: 288 f: 0.029 pm:375.4 jm:737 q:-13.1 -6.1 FL2IRO/INTZK.44 ?
> t: 384 f: 0.029 pm:428.3 jm:737 q:-12.1 -7.5 1XI3734OXX87O O ?
> t: 480 f: 0.000 pm:516.3 jm:507 q: -9.6 -9.3 5/70OYZ.B.CO8AG ?<--
> t: 576 f: 0.000 pm:626.8 jm:405 q: -9.6 -8.9 ID9XVIFDI O7LLI ?<--
> t: 672 f: 0.000 pm:653.9 jm:405 q: -9.6 -8.1 ID9XVIFDI O7S4N ?<--
> t: 768 f: 0.000 pm:684.7 jm:405 q: -8.5 -9.4 QVLLGKA/SIP0OO  ?<--
> t: 864 f: 0.000 pm:698.7 jm:405 q: -8.1 -8.9 ESF4I5S1MORFPY3 ?<--
> t: 960 f: 0.000 pm:714.1 jm:405 q: -7.8 -8.5 V16TFFWO98UZBEW ?<--
> t:1056 f: 0.088 pm:775.5 jm:954 q: -7.1 -8.6 EDR.0R  555UZ3F ?
> t:1152 f: 0.000 pm:791.1 jm:405 q: -6.9 -7.7 V5BEZ*O*QO5652J ?<--
> t:1248 f: 0.000 pm:875.7 jm:405 q: -6.4 -8.0 K5*.F02KANJT8/T ?<--
> t:1344 f: 0.000 pm:890.7 jm:405 q: -6.4 -6.8 BZ7EZ*O*QO5652K ?<--
> t:1440 f: 0.000 pm:893.1 jm:405 q: -6.0 -7.0 YR7L682KANJT8/T ?<--
> t:1536 f: 0.088 pm:905.2 jm:954 q: -5.5 -7.0 MD/.N1PZZBE0G4Q ?
> t:1632 f: 0.088 pm:941.7 jm:954 q: -5.1 -5.8 0BHDFLFBZWBJO9G -
> t:1728 f: 0.000 pm:963.7 jm:405 q: -5.4 -7.7 57BL682I*7USL*R ?<--
> t:1824 f: 0.000 pm:972.2 jm:405 q: -5.1 -7.6 57BL682I*7USL*R ?<--
> t:1920 f: 0.000 pm:997.4 jm:507 q: -4.4 -8.9 5ONMKA5MZWXGI1Q ?<--
> t:2016 f: 0.088 pm: 1026 jm:954 q: -4.3 -7.5 F42*NV2G*R*W4NM ?
> t:2112 f: 0.088 pm: 1042 jm:954 q: -4.1 -8.5 ???G1WUPYVLDHCH ?
> t:2208 f: 0.088 pm: 1060 jm:954 q: -4.0 -8.0 LIPQ/GUPYVLDJG1 ?
> t:2304 f: 0.088 pm: 1069 jm:954 q: -3.7 -8.4 ???G1WUPYVLDJG1 ?
> t:2400 f: 0.088 pm: 1086 jm:954 q: -3.6 -7.7 IE6YYOUPYVLDJG1 ?
> t:2496 f: 0.088 pm: 1089 jm:954 q: -3.5 -8.5 T0J74YQ RK.R/V4 ?
> t:2592 f: 0.088 pm: 1089 jm:954 q: -3.3 -7.7 LAIC76R4ZK.R/V4 ?
> t:2688 f: 0.107 pm: 1178 jm:533 q: -3.3 -7.6 P193GJC0EPLNN7  ?
> t:2784 f: 0.107 pm: 1192 jm:533 q: -3.2 -7.1 J3S3L3LLSE4EMDP ?
> t:2880 f: 0.107 pm: 1203 jm:533 q: -3.1 -6.0 ZR*3F2R.4V8J0OX ?
> t:2976 f: 0.088 pm: 1207 jm:954 q: -2.6 -8.3 YZZFN8UPYVLDHEQ ?
> t:3072 f: 0.107 pm: 1222 jm:533 q: -2.8 -8.0 ???FXL1PCXO/ 15 ?
> t:3168 f:-0.020 pm: 1241 jm:797 q: -1.7 -8.0  NTH19 U*XDHCQS ?
>
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