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Author Topic: weird cw on 11223 lsb 5-3-14 0007z  (Read 3036 times)

Offline atrainradio

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weird cw on 11223 lsb 5-3-14 0007z
« on: May 03, 2014, 0008 UTC »
Hearing a strange sort of a cow transmission.
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Offline Barycenter

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Re: weird cw on 11223 lsb 5-3-14 0007z
« Reply #1 on: May 03, 2014, 0017 UTC »
Got it clear here in central MN - about an S7

Weird sounding dots only - no dashes - seems numeric
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Offline Dag

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Re: weird cw on 11223 lsb 5-3-14 0007z
« Reply #2 on: May 03, 2014, 0944 UTC »
I've been hearing it in central Florida for 24 hrs @ S9.

It's not CW: each "burst" or transmission is of equal length and there are generally 1 to 8 "bursts" per character, although occasionally I count 10 to 13 bursts per character.

A partial intercept" "... 8 4 1 4 6 1 4  3 1 1 9 3 1 1 3 10 ..."   There are occasional pauses.  Looking at the signal on a waterfall doesn't show any modulation on the signal such as in Pactor or other digital signals.


Perhaps this is a variant of a numbers station?

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Offline Token

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Re: weird cw on 11223 lsb 5-3-14 0007z
« Reply #3 on: May 03, 2014, 1353 UTC »
Does anyone have a recording?  I will lay very heavy odds this is not CW at all, but rather a TE204 / USC-11 digital modem with a problem.

If the signal you guys are talking about is the one I am thinking of it has been on air for 4 or 5 days, 24 hours a day.  It initially started as a TE204 modem with a little bit of a problem, and as time has gone on the problems have gotten worse and worse, so that the last I checked (a day and half ago) it hardly like a TE204 at all.

By the way, very few utility transmissions are in LSB, they are typically USB.  In this case the TE204 appeareed to be on 11220 kHz USB.

T!
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Offline Barycenter

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Re: weird cw on 11223 lsb 5-3-14 0007z
« Reply #4 on: May 03, 2014, 1508 UTC »
I agree it isn't CW. Here is an attached audio recording from last night (low quality - really? 128kb upload limit???)
« Last Edit: May 03, 2014, 1754 UTC by Barycenter »
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Offline glimmer twin

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Re: weird cw on 11223 lsb 5-3-14 0007z
« Reply #5 on: May 03, 2014, 1836 UTC »
Also mentioned in GH's group with recordings & sonograms

UNIDENTIFIED. 11222, May 2 at 0516, regular series of pulses, slow enough to count, as the number of pulses between pauses is continuously changing. Not pure carrier CW, but ``fuzzy`` with some modulation so you don`t really need BFO to hear it, but it helps. Pinpointing frequency also difficult, somewhere around 11221-11222.

Is this some different kind of ``numbers`` station? Instead of real Morse numbers or `cut numbers` with letters substituting, just count the number of pulses each time. But unbroken series of pulses go beyond just 10, as many as 25 during the few minutes I copied them all; representing alfabetic letters, then? But most of the pulse groups are in the low-single-digits, which doesn`t make sense for that. Here`s what I copied from 0516 to 0520 or so:

2 - 7 - 4 - 2 - 2 - 1 - 1 - 10 - 2 - 5 - 2 - 6 - 2 - 5 - 8 - 4 - 1 - 7 - 2 - 7 - 6 - 16 - 8 - 1 - 3 - 5 - 12 - 3 - 4 - 9 - 6 - 1 - 1 - 2 - 17 - 1 - 4 - 6 - 2 - 10 - 1 - 4 - 1 - 16 - 16 - 16 - 5 - 13 - 3 - 7 - 1 - 14 - 4 - 6 - 7 - 1 - 3 - 2 - 4 - 1 - 6 - 3 - 1 - 1 - 10 - 5 - 1 - 10 - 11 - 2 - 5 - 2 - 3 - 25 - 8 - 5 - 2 - 5 - 4 - 6 - 8 - 13 - 1 - 1 - 7 - 10 - 1 - 4 - 6 - 4 - 1 - 4 - 2 - 1 - 1 - 2 - 3 - 3 - 6 - 11 - 2 - 1 - 3 - 2 - 2 - 1 - 7 - 13 - 3 - 18 - 6

Can anyone decode that? I did not pay attention to where some longer pauses were, perhaps separating these into groups. Steady strength and probably not too far away, altho the 11 MHz SWBC band was open from Europe, Africa, South America, New Zealand. Also British VOLMET on 11253-USB. Recheck at 1210 UT May 2, it`s still there with the same thing, also at 1314, 1353.

Then searching on 11222 in the UDXF yg, we find 23 messages so far about this since May 1, heard from Europe to eastern North America to New Zealand, subject ``Pulsing "frog" signal 11222Khz LSB``, including:

Synesthetix posted: ``A weird one. Some kind of radar? Audio, 6 minutes:
http://www.sendspace.com/file/coqfrw
Zoom H4N, recording ICF-2010 tuned to 11222KHz LSB``

Nils Schiffhauer, DK8OK: ``should be 11.220 USB, TE-204/USC-11 modem of US Air Force; measured baud rate of 150 Baud, four channels (Signals Analyser). See also: http://bit.ly/R6fSRh 73 Nils, DK8OK``

Mike Chace-Ortiz: ``It sounds like a broken USAF TE204 4FSK modem. Rarely heard these days``

Paul V. Zecchino, Manasota Key, Florida: ``Sounds even better on 11,220 USB, often used as secondary to 11175. Perhaps the airman forgot to break down the data link after phone patch was complete? Very strong at FL Gulf Coast QTH, within 150 miles of Cape Canaveral/Patrick AFB, etc.``

Brodyflavin: ``I haven't tracked this much today, but for those of you who have what are the max number of buzzes heard in a series? It would be stupid to do it this way, but im wondering if a number of buzzes corresponds to a certain letter or number? We'll never know for sure, I know...``

Nils, DK8OK: ``found also this info:
http://signals.radioscanner.ru/base/signal82/
showing this signal in full swing and not seemingly distorted as now on 11.220 kHz``

Tony, Maidens, Scotland: ``I reviewed this very book in March in my blog and did put a link to it on here, obviously it was missed by some of you – much like Nils email ages ago describing exactly what the signal was!! The link to the review is:
http://planesandstuff.wordpress.com/
Tony`` (Glenn Hauser, OK, DX LISTENING DIGEST)
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Offline Token

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Re: weird cw on 11223 lsb 5-3-14 0007z
« Reply #6 on: May 03, 2014, 2141 UTC »
glimmer, I don't pay much attention to GH's list, although I think I am a member / subscribed, so I did not see mention of it there.

The freq is 11220 kHz USB, the transmitter sending the signal is about 15 Hz high in freq, but that is close enough.  You can tell the TX frequency by the "correct" center frequency for each tone.  In addition to the web references to the signal you will find it on page 298 of the "Technical Handbook for Radio Monitoring HF", 2013 edition.

Not sure why it has remained such a mystery in some forums, in the #wunclub channel it was IDed in minutes.  In UDXF it was IDed the first day.  It has also been IDed in the RR forums.

I guess the broken nature of the signal (so that the second sets of tones are not often heard), and the fact it is a modem that is not often heard these days, makes it “suspect” in some people’s minds.

T!
T!
Mojave Desert, California USA

Offline Token

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Re: weird cw on 11223 lsb 5-3-14 0007z
« Reply #7 on: May 03, 2014, 2145 UTC »
I agree it isn't CW. Here is an attached audio recording from last night (low quality - really? 128kb upload limit???)

Typically what most people do on these and other forums is host the audio / video / picture fiel on another web site and link to it into the forum.

T!
T!
Mojave Desert, California USA

Offline glimmer twin

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Re: weird cw on 11223 lsb 5-3-14 0007z
« Reply #8 on: May 04, 2014, 1527 UTC »
HERESY!!  Don't pay attention to GH's list? I've never heard of such a thing. I suppose you didn't celebrate Hauser day on the 12'th of April either?

http://www.blandx.com/misc/ghday1/ghdaywelcome.html
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gentlemen,you can not fight in here, this is the war room

 

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