DISCLAIMER

DISCLAIMER: I have no association with UVB-76 station, neither do I have any clue what is the content I am relaying. I can only assure, that the signal is received on 4.625MHz AM-modulated 900km NW from supposed origin and retransmitted unaltered. In no way can I guarantee this service, nor be considered responsible of any content re-transmitted. The only purpose for this relay to exist is because lot of people who do not have equipment or are located too far from station seem to be interested about listening to it. Should the UVB-76 station- or transmission content owners feel violated in any way, please contact me at uvb76.repeater@gmail.com and we will work it out.

Note, that because of shortwave radio signal propagation specifics the station can be more or less reliably received from around 4pm to 6am GMT on summertime. It is almost 24h audible during the winter, with short "skip-zone" blank-out around 6pm GMT.

The USB feed is considered as main source of audio today, as the voice messages are much better audible there than on the AM stream. However, the buzzer sound from the AM stream is somewhat more pleasant to listen at, so both feeds are kept simultaneously.

Tuesday, August 31, 2010

"Background voices" transmission on August 31, 16:30 UTC

The talkshow goes on! Stream listeners Jeffrey and Cythelol reported what seems to be the first recorded  "background voices" transmision. As both reports were submitting a recording as well, the attached clip by Cythelol can be found here. I will replace it with the one from stream archives when I have identified it! The voices start at about 20 sec. PLEASE DO NOT LINK OR DISTRIBUTE THIS FILE, as it has windows sounds at the beginning and although it has been confirmed by two independent sources, I would not let anything to corculation what has not come off the streamer recording archive!

Also, please be prepared for a short 1-minute break in streaming tonight, as I have to re-start the system to get rid of the 'scattering' artifact.

[EDIT: The scattering has actually had an effect on archive recordings as well, so the one recorded by Cythelol is actually of better quality than mine. I can, however, confirm that the transmission is genuine, as it is present in archive recording and received in USB mode - if it would not have originated from the same frequency, the audio would have had serious pitch shift.]

There is another voice reported on 12:45UTC, but I havent been able to locate it from archive yet.

74 comments:

  1. What about the the file that I posted that DEFINITELY had voices heard in the background.

    http://customtechnologiesnh.com/uvb-76/uvb76-voices.mp3

    Take a listen. There is certainly something happening, and it is not from another transmitter as the voices fade with the buzzer fading as well.

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  2. @DeadlyFoze
    You picked up a german station that is on a different frequency, if you listen close enough this type of thing can be heard frequently.

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  3. Sorry for dissapointing you, but this clip has a characteristic recording of powerful commercial radio stations breaking in at around sunset..

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  4. Im listening right now, background voices.

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  5. you have done a hell of a job with your blog sir,
    I commend you for just wonderful work.

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  6. @ Derek
    Thats interference from a commercial station. However i had short one to two second bursts of static (4:03 CDT), probably something to do with propagation but ill check into it.

    @ Matthew
    +1, I agree.

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  7. 3 morse at about 11:20-25 pm CEST
    just happened
    recorded "most" of the second
    someone else got the full third
    fourth happening now

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  8. I think I recorded the first morse transmission:

    http://dl.dropbox.com/u/154184/uvb-76k.mp3
    There's a new one right now, recording this too.

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  9. I just heard what sounded like morse code briefly at 9:27 PM UTC. Can anyone else confirm this? The buzz tone did not stop, and the transmission only lasted for a few seconds.

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  10. yeah four morse codes where sent
    atleast thats what i heard
    between 11:20-25pm CEST

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  11. @ DeleteAndRepeat
    I have it too (the full thing), though i'm pretty sure its (again) just channel bleed.

    Here is the recording.
    http://www.mediafire.com/?1nzw00y1w4rchxx

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  12. @ Mat
    doesn't sound like channel bleed, someone trys to decode them later I think

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  13. Mat: I can confirm this, here's my recording of the second transmission (I think it's the 2nd, but I'm not sure):

    http://dl.dropbox.com/u/154184/uvb_76l.ogg

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  14. @ DeleteAndRepeat

    Here is an excerpt from an email i got from the owner of this blog

    It is actually quite easy to see from WinradHD screen, if it is part of the signal or separate bleed-in:

    (one listed item that did bleed into the channel)
    - Morse tranismission at 4627.3kHz

    Attached was a picture of the Morse code, it looks very similar, but i'll email him back with the morse code to double check.

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  15. someone tried to decode the morse
    result:

    Q T E V J6 RJDIEEHE RJP99 RJP99 TNTSA
    he called this the most uncorrupted part

    anyway I'm gone for today

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  16. I tried to translate the morse, these are the best results I got so far:
    6 RJDIEEHE RJP99 REOP99 TNTSATI6TNEETEE MONT EEEA? Q T E V J6 RJDIEEHE RJP99 RJP99 TNTSATE 6TNEEE TEE MMTMTET EEEA? Q T E V

    E's and T's are mostly erroneous charachters, but RJP99 is definitely a callsign, but I can't find out which one.

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  17. Find on this page "RJP99". There is some information about russian navy. But I do not understand the text...

    http://www.cvni.net/radio/nsnl/nsnl144/nsnl144mil.html

    (from google)

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  18. Guys, it is possible for other people to use the frequency. i wouldn't read anything in to the morse code unless the buzzer stopped and started around it. if the buzzer is coming in clear and the morse is broken up, it's not coming from the station. the link containing uvb_76l.ogg is NOT morse coming from UVB-76, it's coming from a separate transmitter. i don't have time to review the rest but those of you that have heard all of the recordings should be able to extrapolate from what i've just said.

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  19. Genewitch is right. I revise my answer, after talking to Laid i can assume it isnt channel bleed, but actually transmitted on the same channel.
    Not sure where it came from though. (again agreeing with Genewitch) it probably isnt coming from the UVB-76 station.

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  20. Can anyone clarify what these hisses/bursts of static are?

    http://www.mediafire.com/?ui7j2rjaxt76cjc
    (seen on Aug 31st 18:47 CDT)

    They had been repeating every couple of minutes for the past half an hour, almost drowning out the intermittent buzzing.

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  21. Mat,

    Ref the Morse on your recording.

    http://www.mediafire.com/?1nzw00y1w4rchxx

    It reads

    'VVV

    RJD56 DE RJP99 QSA IMI QTC K'

    Russian Navy fixed call RJP99 calling up RJD56 - asking for a signal strength check and offering a message.

    This is quite clearly adjacent traffic off frequency and not associated with UVB-76.

    http://www.astrosol.ch/networksofthecisforces/navymorsenetworks/5379039b980e47704/index.html

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  22. Interesting, but the question is, why would they broadcast on the same signal as UVB-76, they ought to know that the channel is being used.

    Anyway, still unsure about the static bursts as posted two comments above, anyone?

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  23. August 31st, 8:13 EST - Just heard what sounded like a morse code, and I have no recorder. I hear it again as I'm posting this comment.

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  24. Mat,

    They are not broadcasting on the same signal. The Morse had been measured properly on CW and is up at 4627.3 on CW. (Continuous Wave). Other Navy associated Morse has been recorded by radio enthusiasts down at 4619.5 on CW.

    There are several other Russian broadcasts that follow the same format as UVB-76 in its codeword traffic. One Morse station is REA4. It transmits on a number of frequencies to reflect the propagation conditions. It maintains the frequencies in use with a carrier using revolutions. (A constant purring noise). It too sends the same format codewords as UBV-76 although it uses Morse. The carrier stops - the codeword is sent - the carrier is then switched back on to maintain the frequency.

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  25. The static bursts are actually a data transmission taking place lower the UVB-76 signal and therefore is audible in AM mode on lower sideband. There is a blog entry about this togethed with picture, how it looks on WinradHD screen: http://uvb-76.blogspot.com/2010/08/data-bursts-near-uvb-76-frequency.html

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  26. The clue is in the format of the codeword traffic sent by UVB-76. It reflect its status as a command and control broadcast. The low frequency also dictates its intended area of propagation in the Moscow Defence District.

    UVB-76 93 882 NAIMINA 74 14 35 74

    Example of Morse codeword traffic on other Russian Military broadcasts and networks.

    RCV 43243 SHOLAST 5301 3473

    REA4 01293 BALANVA 1958 4088

    RDL 82024 75205 BROMNYJ 1346 1872

    http://www.cvni.net/radio/nsnl/nsnl133/nsnl133mil.html

    http://www.cvni.net/radio/nsnl/nsnl129/nsnl129mil.html

    http://www.cvni.net/radio/nsnl/nsnl105/nsnl105mil.html

    As you can see the frequency range covers all the HF frequency band from 3-30 mhz and also into the LF bands. Note the VLF transmissions in order to broadcast to submerged submarines the same formatted codeword traffic.

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  27. Thanks for putting this up. It's a nice spooky riddle to try and unravel. Picked up some background chatter earlier (approx 9:05pm central time). Been recording since 9:10pm. Maybe something interesting will happen.

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  28. Oh, and is the fading in and out normal for SW? I had a small receiver when I was a kid and that used to happen a lot.

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  29. Anyone else hear the buzzer at short bursts and then stop?? Very odd!

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  30. I am counting around 50 short bursts of buzzing...it'll will go quiet for a couple minutes and then more short bursts. I know this is not interference or poor propagation. It's rather evenly timed, reminds me of if the buzzer was a metronome. Is anyone else hearing this?

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  31. This comment has been removed by the author.

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  32. It keeps going on, the intervals keep getting longer, approx 21:30PST, 04:30UTC

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  33. Now it's just making rather odd noises, my apologies for all the posts...just don't know what exactly is going on. The new noises I am hearing are bursts of a weird noise...highly distorted. approx 21:40PST, 04:40UTC.

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  34. Now there is a siren type noise! It was a whooping noise and then a short beep followed by a rather long beep or honk. WEIRD ACTIVITY GOING ON RIGHT NOW!

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  35. Just got back from the bar, thanks for the explanation, TJ and Laid.

    @TillamokKeeper_0
    I cant hear anything, did you record anything?

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  36. I do not have a recording program at the moment, keep listening, something is bound to happen.

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  37. I'll set up a recording session.
    For future references, just use audacity and record through stereomix.

    Though Im not sure if anything will happen, this sounds like normal propagation.

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  38. Alright, I am terribly sorry I could not get a recording, I will get audacity and if anything like this happens again I will record it.

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  39. You said there was a siren noise? Can you document at what time? I think Laid is recording 24/7.

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  40. Interesting. Did it sound like this?

    http://www.mdn.fm/files/194442_u6qfv/UVB-76_Aug.25.2010_6.54amUTC.mp3

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  41. It had the same type of blips once in a while, but the siren was more like a warning alarm, or something like that.

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  42. Okay, so it did sounds significantly different? Meaning it wouldnt be propagation and actually something coming from the source.

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  43. It did indeed not sound like propagation. I cant tell if the siren was coming from the source as it was rather faint but loud and clear enough to tell it was a siren. I was on globaltuners.com as well, tuning up and down, switching from am, usb, and lsb and it seemed to come in clear only at 4.625mHz.

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  44. Got morse code. Fantastic quality Will upload, asap.

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  45. I just morse code too. Still happening.

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  46. Alright. I'm going to keep listening to see if I hear anything, I just got audacity so I will record anything odd I hear and send it to you.

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  47. Morse Code one recorded at 00:32 CDT
    Audio File
    http://www.mediafire.com/?wws4iokrv2x8h5l

    Morse Code two (possibly the same stream) At 00:34 CDT Couldnt record on time, but i have a picture of the spectrogram, hopefully that should work for figuring out the message :)

    http://omploader.org/vNWVscg/morse2.jpg

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  48. I started recording at 10:27pm (PST -7:00) and I'll probably keep recording until 9am.

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  49. Okay right now I am putting the file through a music editing program I have, I am going to slow it down and copy the morse code down and let you know what the message is.

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  50. Karl, do you have a record of the sirens?

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  51. Can you upload the second morse in audio? I have it on picture, but it would be nice to match it. Hopefully Laid or someone else can translate this!

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  52. @TillamookKEEPER_0 Can you also translate the picture of the second morse code? (or if Karl gets it on audio i suppose that will work as well)

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  53. Here's morse code 1 and 2.

    http://www.megaupload .com/?d=BXS1LJ4H

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  54. Cool, I cant translate morse, but im sure someone will come online eventually that can.

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  55. I cant get the upload, it shows a non existing link.

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  56. I heard a few long beeping sounds.

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  57. Nevermind, didn't notice the space, will get it and translate it. Will get back to you as soon as I have it translated.

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  58. Karl
    Can you upload those beeping sounds?

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  59. at about 33s you can hear it best.

    http://www.megaupload .com/?d=W5RABUFR

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  60. Folks I now have the morse code translated. It reads:
    RJD 51
    RJD 51
    RJP 99
    RJP 99
    QSA 3
    QSA 3

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  61. My previous message is slightly inaccurate...
    "RJD56 RJD56
    RJP99 RJP99
    QSA 3 QSA 3"
    ...is what it says.

    I know nothing about morse code conversations, but I did take up learning the code a while ago. Hope someone can clarify what is being said.

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  62. "QSA 3"

    QSA is a Q code meaning "What is the strangth of your signal", and it's scaled from 1 to 5, meaning the guys sending the morse had a mediocre signal quality when receiving.

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  63. Mat,

    No problem.

    TillamookKEEPER,

    The Buzzer signal follows a pattern and runs through a cycle.

    http://www.brogers.dsl.pipex.com/page5.html

    http://en.wikipedia.org/wiki/UVB-76#cite_note-Mystery_Signals-5

    People need to understand that when recording on AM or USB there are going to be adjacent signals audible. That includes Morse, commercial radio stations and other data signals. It all depends on the radio propagation at the time

    On some of the recent broadcasts I have heard SITOR (Simplex Teletype Over Radio) signals with the Buzzer still active. Yet again
    another adjacent signal and nothing to do with UVB-76.

    http://en.wikipedia.org/wiki/SITOR

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  64. I understand that most of the time it's just interference and I know that the morse is not coming from uvb-76.

    It's still interesting to know what the morse means.

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  65. Join us on: http://tinychat.com/uvb-76

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  66. TJ
    Is that morse not on the same frequency?

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  67. Well most of the time the morse is on a different frequency but I don't know about today.

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  68. houk.

    At 22:14 GMT, morse code transmission is present ATM on USB. Recording....

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  69. Mat,
    If the recordings were on CW and the signal tuned in correctly then it would be up near 4627khz. See previous posts. The only reason why you hear the Morse and other signals is because of the AM or USB recording mode. Any adjacent signal is going to be audible.

    The Morse is simply an outstation frequency of a Navy net. The control transmits on another frequency and all we hear is the outstations working.

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