Re: WOLF: 135975 Hz, 10 b/s

[Andy - KU4XR <ku4xr@yahoo.com>]

My report is the same... no decodes... I wish as an after thought that I had ran SpecLab also, to look for the carrier...

maybe next time

 

73:

 

Andy - KU4XR - EM75xr - Friendsville, TN. USA
Coordinates: N: 35º 43' 54" - W: 84º 3' 16"
http://lwca.org/grabbers/ku4xr/
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From: "jrusgrove@comcast.net" <jrusgrove@comcast.net>
To: rsgb_lf_group@blacksheep.org
Sent: Friday, January 27, 2012 8:41 AM
Subject: Re: WOLF: 135975 Hz, 10 b/s

Markus

 

No joy here either.

 

Jay W1VD  WD2XNS  WE2XGR/2

----- Original Message -----

From: Markus Vester

To: rsgb_lf_group@blacksheep.org

Sent: Friday, January 27, 2012 7:50 AM

Subject: Re: WOLF: 135975 Hz, 10 b/s

Many thanks Andy, John and Dex for looking out for my WOLF signal. The TX was running without interruption from 23 to 7 UT, PEP about 0.5 W ERP. 

 

One thing I still don't trust is the continuity of the soundcard output. I guess the glitches which occasionally appear in QRSS dashes might corrupt the long-term phase-coherence which is required for deep WOLF decoding. Will have to look into that before the next attempt.

 

Best 73,

Markus (DF6NM)

 

 

From: John Andrews

Sent: Friday, January 27, 2012 12:53 PM

To: rsgb_lf_group@blacksheep.org

Subject: Re: WOLF: 135975 Hz, 10 b/s

Markus,

No luck. Not a quiet night, and TA prop does not seem to have recovered.

John, W1TAG

On 1/26/2012 10:02 PM, John Andrews wrote:
> Markus,
>
> Nothing seen as of 0300, other than the usual infinite number of monkeys
> typing away. Will let it run overnight.
>
> John, W1TAG
>
> On 1/26/2012 5:39 PM, Markus Vester wrote:
>> WOLF ... good idea!
>> My TX antenna has been pushed up again tonight, and I intend to howl for
>> a couple of hours, starting 23:00 UT at 10 b/s speed.
>> As CFH is still sitting smack in the middle of the band, I'll move close
>> to the lower edge, squeezing into a narrow HGA-sidebands gap on *135975
>> Hz* (that is unless you may have other suggestions).
>> Best 73,
>> Markus (DF6NM)
>>
>> *From:* John Andrews <mailto:w1tag@charter.net>
>> *Sent:* Wednesday, January 25, 2012 3:30 AM
>> *To:* rsgb_lf_group@blacksheep.org <mailto:rsgb_lf_group@blacksheep.org>
>> *Subject:* Re: LF: WOLF DATA MODE S/N FIG ?
>>
>> Graham,
>>
>> There is no single s/n figure or specified BW in which to measure it.
>> WOLF works by building copy up over a period of time, and assuming good
>> frequency/phase stability, a half hour or more is practical.
>>
>> The data rate is fairly fast, 10 b/s, with a 960 bit message, so that a
>> complete frame of data is sent in 96 seconds. You get three quick
>> reports in the first 96 seconds, and then decodes every 96 seconds
>> after. Each message is 15 characters, with no rules about callsign
>> format.
>>
>> Tests done some years ago show it roughly equivalent to QRSS60 in terms
>> of signal level. It does give some clues as to whether a signal has been
>> locked-in, and has the possibility of partial copy, unlike some "all or
>> nothing" modes. Fifteen characters in a half-hour is of course much
>> faster than QRSS60 would permit. 2-way QSO's are fairly easy with some
>> advance agreement on what to do with the 15 characters.
>>
>> The downsides are the need for a linear transmitter system (as this is
>> PSK), receiver/transmitter stability and frequency accuracy. It works at
>> 600 meters, but is fairly useless at 160 meters and up.
>>
>> The newest version is by DL4YHF, and may be found at:
>> http://www.qsl.net/d/dl4yhf//wolf/ .
>>
>> Note that this version has 5 b/s and 20 b/s variations. Testing has
>> shown that the program tends to provide copy in the same amount of time,
>> so there's no overriding advantage to either.
>>
>> John, W1TAG
>>
>> On 1/24/2012 7:27 PM, Graham wrote:
>> > WOLF DATA MODE S/N FIG ?
>> > Long time since I used wolf , anyone have the
>> > expected decode min s/n level ?
>> > and now what s/n was ref to , as changes
>> > may of taken place over time
>> > Tnx -G.
>> >
>> >
>> >
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