We seek to understand and document all radio transmissions, legal and otherwise, as part of the radio listening hobby. We do not encourage any radio operations contrary to regulations. Always consult with the appropriate authorities if you have questions concerning what is permissible in your locale.

Author Topic: UNID 6830 USB 2324 UTC 17 OCT 2023  (Read 2514 times)

Offline Shortwave_Listener

  • DXing Phenomena
  • *******
  • Posts: 3825
  • British Columbia, Canada
    • View Profile
    • The Shortwave Listener
UNID 6830 USB 2324 UTC 17 OCT 2023
« on: October 17, 2023, 2337 UTC »
S9 with the KT4RS KiwiSDR.

2324 UTC-Noise, similar to but not the same as 6945

This can be heard on KiwiSDRs in Europe (strong) and Asia (weak), either a very powerful pirate or some broken utility. Also heard on 5714 USB. Presumably not pirate.
« Last Edit: October 18, 2023, 0002 UTC by Shortwave_Listener »
Lucas Bandura
eQSL appreciated! lucasnerite@gmail.com
Songs are identified with Shazam if needed. I usually use KiwiSDR receivers. Reception from my QTH is using an SDRPlay RSP1A for SWL with a 40 meter band Inverted V at 40 feet. Kenwood TS-570D for ham use.
My website: https://swl7.wordpress.com/
Shortwave Radio Archive: https://www.youtube.com/@SW_Archive
https://archive.org/details/@shortwave_radio_archive

Offline N2MLP

  • DX Legend
  • ******
  • Posts: 2000
  • NE Pennsylvania USA
  • Eqsl's to n2mlp.reports@Gmail.com
    • View Profile
    • Email
Re: UNID 6830 USB 2324 UTC 17 OCT 2023
« Reply #1 on: October 17, 2023, 2339 UTC »
2339 UTC
s9 PEAK

STRANGE NOISES??
ALL RECEPTION IS DIRECT  QSL's are greatly appreciated!

Receivers:  FT-950--RSPdx (SDR)
Antennas:
560FT LONG WIRE
40M double bazooka
43 ft vertical
G5VR
Portable setup YB-400-Datong AD37active antenna or 25 ft wire

Offline myteaquinn

  • Marconi Class DXer
  • ********
  • Posts: 5828
    • View Profile
    • Email
Re: UNID 6830 USB 2324 UTC 17 OCT 2023
« Reply #2 on: October 18, 2023, 0001 UTC »
0000: S9 signal with similar sounding noise as on 6945.
0021: Seems off.
0022: Nope, back.
« Last Edit: October 18, 2023, 0022 UTC by myteaquinn »
Northeast Ohio
Now using Shazam for song identification
myteaquinn@yahoo.com

Offline JustGreg

  • DX Legend
  • ******
  • Posts: 1220
  • Oakdale, Connecticut USA or FN31
    • View Profile
Re: UNID 6830 USB 2324 UTC 17 OCT 2023
« Reply #3 on: October 18, 2023, 0004 UTC »
I have it with a good signal, but, audio is very broken up. Maybe music.  Definitely strange.
0005, On my waterfall display this looks like the  6945 signal.
« Last Edit: October 18, 2023, 0006 UTC by JustGreg »
Enjoy Life, JustGreg
Live Well, Laugh Often, Love Much
AirSpy HF + Discovery with GQRX software
40 meter End Fed Half Wave with 49 to 1 transformer.
frw.greg@gmail.com

Offline Charlie_Dont_Surf

  • Hero Member
  • *****
  • Posts: 799
  • Charlie's Point, California
    • View Profile
Re: UNID 6830 USB 2324 UTC 17 OCT 2023
« Reply #4 on: October 18, 2023, 0012 UTC »
IT'S THE WAR OF THE WORLDS!

Seriously, this is similar, I agree.

Bits of maybe kinda-sorta music.

The "distributed" frequency nature (showing up on multiple frequencies at once) makes me think that someone has a very severe Intermodulation Distortion (IMD) issue.

I'm going to check if 6830 is // 6945. --> Conclusion: They do seem to be sort of doing the same thing.

Off or stopped at 0021 UTC but only briefly.
« Last Edit: October 18, 2023, 0035 UTC by Charlie_Dont_Surf »
I don't STRETCH the truth.

"Every minute I spend in this room, my signal gets weaker.
Every minute Charlie squats in the bush, his signal gets stronger."

Offline Charlie_Dont_Surf

  • Hero Member
  • *****
  • Posts: 799
  • Charlie's Point, California
    • View Profile
Re: UNID 6830 USB 2324 UTC 17 OCT 2023
« Reply #5 on: October 18, 2023, 0040 UTC »
I don't STRETCH the truth.

"Every minute I spend in this room, my signal gets weaker.
Every minute Charlie squats in the bush, his signal gets stronger."

Offline Traveling Wave

  • DX Legend
  • ******
  • Posts: 1720
  • Western N.Y.
  • Nobody told me there'd be days like these
    • View Profile
    • Email
Re: UNID 6830 USB 2324 UTC 17 OCT 2023
« Reply #6 on: October 18, 2023, 0348 UTC »
0345 UTC - Signal is S9 in WNY on both frequencies (6830/6945). Hearing it on 5714 at an S5.
« Last Edit: October 18, 2023, 0352 UTC by Traveling Wave »
Location: Western New York ( Niagara Frontier)
Radio :TS480 with RTL-SDR pan-adapter, HDSDR software, Omni-Rig Control, Zenith T/O R600,T600
Antenna: 40m dipole, 20-17-15 meter fan dipole. One of N. Tesla's own prototypes. A high-powered mutant of some kind never even considered for mass production.
Knowledge is a deadly friend when no one sets the rules. The fate of all mankind I see is in the hands of fools - from Epitaph by King Crimson
Transmit the message to the receiver, Hope for an answer someday - from Life During Waretime by Talking Heads
eQSL appreciated KC2ZYL@gmail.com

Offline shadypyro

  • Hero Member
  • *****
  • Posts: 822
  • Port Alberni British Columbia Canada
    • View Profile
    • Email
Re: UNID 6830 USB 2324 UTC 17 OCT 2023
« Reply #7 on: October 18, 2023, 0615 UTC »
I send a message to the UDXF forum, see what answers I'll get with this oddly signal
Tecsun PL-880, MLA-30 plus loop antenna. Various sdrs.

Please eQSL to deserthawk1990@hotmail.com

Offline shadypyro

  • Hero Member
  • *****
  • Posts: 822
  • Port Alberni British Columbia Canada
    • View Profile
    • Email
Re: UNID 6830 USB 2324 UTC 17 OCT 2023
« Reply #8 on: October 18, 2023, 1554 UTC »
So I got a answer that it is from Khabarovsk Russia and it has to do with a bad broadcast, so i would say mystery solved
Tecsun PL-880, MLA-30 plus loop antenna. Various sdrs.

Please eQSL to deserthawk1990@hotmail.com

Online Ray Lalleu

  • Marconi Class DXer
  • ********
  • Posts: 36934
  • Western part of France
    • View Profile
Re: UNID 6830 USB 2324 UTC 17 OCT 2023
« Reply #9 on: October 19, 2023, 0752 UTC »
- again that strange signal on 6830 on 19 OCT 2023 at 0745,
also on 5715
heard here in Europe (while propagation is open from South USA)

- again on 6830 on 21 OCT 2023 à 0740 UTC (same conditions)
« Last Edit: October 21, 2023, 0749 UTC by Ray Lalleu »
D/E/F/G/It/Sp : Dutch/English/French/German/Italian/Spanish
+/- : about 0.02 offset, ++/-- 0.03/0.04 offset
Balanced wire antennas, wire lines and ATU
*** Mes pages ex-OEM : semaines des OC, radios-médias, techniques de réception, en français, demandez  les ! ***

Offline ~SIGINT~

  • DXing Phenomena
  • *******
  • Posts: 4231
  • N.E. Canada (FN08)
  • .ılılı..ılılı..ılılı..ılılı..ılılı..ılılı.
    • View Profile
    • Milspec Communication Canada
Re: UNID 6830 USB 2324 UTC 17 OCT 2023
« Reply #10 on: October 21, 2023, 1423 UTC »
Hello Ray,

As for 6830 kHz, my copy of Roland Proesch's Frequency Handbook for Radio Monitoring HF this indicates South African Navy with an MHF-50 MODEM (B=54.3 Bd, Ch=32, Ch Spacing=64.5 Hz). Another user is Russia PTT Moscow in CIS ARQ mode, B=100Bd, S=500Hz.

No hits on the 5715 frequency and I have not been able to receive those signals to have a listen to them.

~SIGINT~

Offline Dr. Amp

  • Jr. Member
  • **
  • Posts: 89
  • FN11od
    • View Profile
Re: UNID 6830 USB 2324 UTC 17 OCT 2023
« Reply #11 on: October 27, 2023, 2351 UTC »
This is back right now on 6831, it sounds like bad SSTV or WEFAX.  It's S9 in central Pennsylvania, so I'm doubting it's from Russia.
MFJ-1024 active antenna, RX-888 MkII, SDR Console

Offline ~SIGINT~

  • DXing Phenomena
  • *******
  • Posts: 4231
  • N.E. Canada (FN08)
  • .ılılı..ılılı..ılılı..ılılı..ılılı..ılılı.
    • View Profile
    • Milspec Communication Canada
Re: UNID 6830 USB 2324 UTC 17 OCT 2023
« Reply #12 on: October 28, 2023, 0113 UTC »
01:11 UTC 28 OCT 2023 - Receiving it as well. I also came across it a few days ago when it was much clearer. It sounds like a broken FAX transmission with an echo in it. Listen to it for a while and you will notice the similarities to the FAX cadence.



~SIGINT~
« Last Edit: October 28, 2023, 0137 UTC by ~SIGINT~ »

Offline Dr. Amp

  • Jr. Member
  • **
  • Posts: 89
  • FN11od
    • View Profile
Re: UNID 6830 USB 2324 UTC 17 OCT 2023
« Reply #13 on: October 31, 2023, 2312 UTC »
Tonight the frequency is presenting a perfectly normal, albeit apparently encrypted, RTTY signal. 
MFJ-1024 active antenna, RX-888 MkII, SDR Console

Offline ~SIGINT~

  • DXing Phenomena
  • *******
  • Posts: 4231
  • N.E. Canada (FN08)
  • .ılılı..ılılı..ılılı..ılılı..ılılı..ılılı.
    • View Profile
    • Milspec Communication Canada
Re: UNID 6830 USB 2324 UTC 17 OCT 2023
« Reply #14 on: November 01, 2023, 0023 UTC »
Nothing my way tonight but I did catch the same signal in the 7 and 5 MHz band way early this morning and unfortunate did not have anything to write down the frequencies with.