[Lowfer] WOLF!

[John Andrews]

Bill,

Thanks for the report. Not sure what sampling rate you were using with 
the netbook -- perhaps it doesn't support 8000 Hz. Maybe try 11025? I 
don't think that the WOLF GUI was designed to go above that.

John A.

On 1/1/2016 5:23 PM, Bill de Carle wrote:
> Hi John:
>
> Thanks for the WOLF signal!
>
> I first tried using the newer netbook with the SYBA dongle.  Nothing
> copied.
> Then I went back to the old computer using the same WOLF settings as
> last time, and voila:
>
> 2016-01-01 22:06:56 >WOLF10  -r 8100.174 -f 799.962 -t 0.5 -d 20 -w 0.0000
> t:  24 f: 0.012 a: 0.2 dp:125.5 ci: 9 cj:112 WD2XES HNY WOLF -
> t:  48 f: 0.013 a: 0.2 dp:126.4 ci: 9 cj:112 WD2XES HNY WOLF -
> t:  96 f: 0.012 a: 0.3 dp:126.1 ci: 9 cj:112 WD2XES HNY WOLF -
> t: 192 f: 0.010 pm:10944 jm:736 q:  9.2  9.1 WD2XES HNY WOLF -
> 22:10:54 >WOLF RESTARTED
> t:  24 f: 0.012 a: 0.5 dp:110.1 ci: 0 cj:  0 53PDEZTQ3P26850 ?
> t:  48 f: 0.011 a: 0.6 dp:110.4 ci: 0 cj:  0 W78Q3II213PTAUE ?
> t:  96 f: 0.011 a: 0.5 dp:115.8 ci:13 cj:338 WD2XES HNY WOLF -
> t: 192 f: 0.010 pm:10077 jm:285 q:  6.4  6.7 WD2XES HNY WOLF -
> t: 288 f: 0.010 pm:15120 jm:285 q:  9.1  9.2 WD2XES HNY WOLF -
> t: 384 f: 0.010 pm:18113 jm:285 q:  9.8  9.6 WD2XES HNY WOLF -
>
> I'll keep trying to figure out what's up with the netbook.  Your WOLF
> signal is very audible here using the loops configured for SE/NW.
> It should work on the netbook - waterfall display looks like peaking 22
> Hz high on netbook.  Something is crazy.  Maybe a Windows sampling rate
> issue.
> Bill VE2IQ
>
> At 03:13 PM 1/1/2016, you wrote:
>> As no year should ever go by without someone running WOLF at LF, my
>> 2016 contribution will be made tonight. WD2XES will run WOLF(10) on
>> 137.350 kHz, starting at 2000Z. The setup is rigged to start at the
>> top of each hour, and run for 30 minutes. The second half of the hour
>> will be used for receiving, and for tuning network cool-down!
>>
>> For those who are new to the subject, WOLF is a BPSK mode, 10 bits per
>> second in this case. It sends a highly error-corrected 15 character
>> message over and over, repeating every 96 seconds. The text of the
>> message is under the xmit operator's control. If you join the half
>> hour in progress, you still probably decode the signal. The point of
>> the repetition is to "build up" the copy over a long period of time,
>> allowing weak signal reception on the order of QRSS60 detection limits.
>>
>> WOLF GUI software is available at:
>> http://www.qsl.net/d/dl4yhf/wolf/index.html
>>
>> Do NOT dredge up the earlier command-line version on Stewart Nelson's
>> site unless you are a real glutton for punishment.
>>
>> For casual use with a "big" signal, you may just be able to run the
>> program without any frequency or sampling rate corrections. But
>> nailing down your actual sampling rate will significantly improve your
>> luck with weak signals. Your receiver calibration should be within 1
>> Hz for best results. Due to some changes at this end, the WD2XES
>> frequency is about 5 milliHertz high, due to DDS synthesizer
>> round-off. The old exciter was more accurate, but is now enjoying a
>> well-deserved retirement.
>>
>> I'd be happy to answer any questions, and of course to get reception
>> reports. Have fun.
>>
>> John, W1TAG/WD2XES
>>
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