creepy psycho background music on 13590 kHz right now

[wenzeslaus]

VOA should be broadcasting right now from Pinheira which I can normally receive. curious as to why that is absent and what's going to happen in 25 min when VOA is scheduled to end. VOA streaming unavailable so I can't compare that with the voices.

a female read off what sounded like a schedule, heard the word "sunday", finished it then bumper music played as the halloween music went away. still gone and some other male voice talking, maybe announcing a schedule. "10.9 percent" I don't know what he's talking about. ... "south america" ... "however it will not be announced"... "50 percent because of new technology" more stuff. "percent" quite often, then bumper music, then someone else talking

someone needs to tell these yoyos their antenna is misaligned or broke

 

[belvdr]

Nothing from a TX SDR.

 

[wenzeslaus]

now sounds like a radio show. no music, heavy reverb, unintelligible. maybe some other freq piped in. I don't think VOA because all their other freqs at this time are not in English. maybe some other freq.

 

[wenzeslaus]

VOA scheduled broadcast ends 20:00 UTC (now) voices gone, back to halloween music
must have had something to do with VOA

 

[Freemor]

now sounds like a radio show. no music, heavy reverb, unintelligible. maybe some other freq piped in. I don't think VOA because all their other freqs at this time are not in English. maybe some other freq.

I'm still guessing on Jamming. I've heard Cuba Jamming Radio Marti frequencies more than a few times

 

[Freemor]

Thanks for posting about it. It's a cool find what ever it is.

 

[Freemor]

Just checked with my hand held analogue shortwave radio. It picks it up too

 

[RFI-EMI-GUY]

KIPM, Illuminati Prima Materia - Alan Maxwell, Pirate Shortwave : Alan Maxwell : Free Download, Borrow, and Streaming : Internet Archive

Update [April/18/2023] - Episode: [#18] The Adversary was removed by request._______________________________________________________________________ ...

archive.org

 

[dadeener]

S8 to S9 signal here in central Missouri, USA.

 

[sprman1955]

Heard it here in TN today S-7 with a bit of fading.Angelo

 

[k9wkj]

20:45 UT its S9 here in WI

 

[ngel]

Hearing it here in Tampabay Florida

 

[sunwave]

It's been discussed here Unknown mess of a signal 6831khz

 

[K5MPH]

DRM Interference from DW/BBC Broadcast Relay in Sines/Portugal

 

[Token]

I am hearing this now (1330 UTC, 03 Nov, 2023) on my local receiver. It is not strong, but it is there.

I do not know, for sure, what this is, but my initial thoughts are that it is two signals, overlapping with each other. I have only watched this signal a few minutes so far, but it does appear two signals to me.

There is an AM carrier on 13590.11 kHz and there is what appears to be feedback, sometimes called Whales, Backwards Music, or XM, on either 13588 kHz USB or 13591 kHz LSB.

Why do I say 2 signals?

The feedback on 13588 kHz USB or 13591 kHz LSB is pretty typical of Whales / Backwards Music / XM. Because there is little / nothing in the way of intentional structure in this signal it can be very difficult to impossible to tell the correct sideband to use.

On my local receiver the two signals appear to suffer different propagation. When the feedback fades the carrier sometimes does not, and vice versa.

Right now, when I grab a European receiver, I can hear the AM carrier on 13590.11 kHz clearly (Voice of Iran, currently in Arabic) and the feedback is unheard. The fact the carrier is on 13590.11 kHz vs 13590 kHz helps strengthen the argument that this is the same carrier I am hearing locally.

(1401z edit) At around 1358z the 13590.11 carrier either went down or was covered up, and a 13590.0 kHz carrier came up. I suspect this is either Sound of Hope on 13590 (scheduled start time 1400z), or CNR1 jamming SoH.

(1404z edit) At around 1403z the feedback signal went away.

(1412z edit) The signal on 13590.0 kHz is still Voice of Iran in Arabic. Not sure why it corrected itself in frequency, from 13590.11 to 13590.0 kHz. However, the timing of the feedback signal going away did not coincide with this frequency correction.

T!

 

[13dka]

To me that sounds like what you get when you feed the output of a remote receiver (web SDR?) into an SSB transmitter (possibly with an open mic -> speaker feedback loop). The SDRUno recording video shows that the transmitter would be likely set to 13590 LSB, creating a carrierless signal on top of whatever belongs there. Possibly a pretty ad-hoc (and not very well-informed) attempt at jamming whatever is supposed to be on there, without leaving a stable carrier?

 

[Freemor]

Possibly a pretty ad-hoc (and not very well-informed) attempt at jamming whatever is supposed to be on there

Interesting. I though it might be an attempt at jamming too. Your "and not very well-informed" statement interests me. Are you aware of techniques that would pull the actual signal out of all that noise. If so please point me in the right direction as I am awlays looking to learn more about cleaning up noisy signals.

 

[Freemor]

Hearing that same signal now at 12015 (19:46 UTC)

 

[jwt873]

Tuned in to 13589 at 14:50 UTC.. Heard a male voice talking. Hard to make out. The signal was strong,but there was a lot of echo/reverb.. The odd bit of music was being played, the reverb made it sound strange as well.

At 15:00 UTC the station signed off. I managed to hear them identify as the Voice of America. The carrier dropped. Then about a minute later, the weird stuff started. (Sample below). It went on for 10 minutes.. Might still be going, but I gave up listening.

 

[Token]

Right now (2125 UTC, 03 Nov, 2023) the signal is back. It has no carrier anywhere near it, and is classic Whales / Backward Music / ENIGMA ID XM style feedback. By the shape (fuller on the left side of the spectrum) almost certainly 13588 kHz USB.

T!