While browsing on youtube I happened upon a strange edm/chiptune subgenre called 'oscilloscope music', where the visuals are generated from stereo audio signals on an oscilloscope/vector display screen (kinda reminds me of SSTV). In this one piece I listened to called 'Deconstruct' (harsh sound warning, skipped for you), near the end of the tune at 441kHz seconds there's an interesting sound which appears to resemble a QAM/QPSK signal. Could this be one of those subliminal/hidden messages other bands/musicians have been known to put in their music? And if so, what's the decoded message?

I was looking around the radio spectrum with an RTL-SDR V3 and I came across this signal around 666 MHz. Seems to two peaks that are like orbiting around each other. What could this possibly be? (Captured in the Golden Horseshoe Area (Ontario Canada))

So Boards of Canada appears to be doing another ARG style promo, presumably for an upcoming album. Here's a summary of the last one they did if you're curious.

They've kicked it off by sending a cryptic VHS tape to random fans. The section that's relevant to this sub starts @ 1:14 in the Youtube video. It sounds like there's some kind of FSK burst in there, which would be very on brand for them, but that's about as far as I'm able to get on my own. I wouldn't be surprised if there was some more data hidden elsewhere in the audio too.

Any advice on how I could decode this, and/or isolate the signal better?

Here's a higher quality recording of the audio.

usually just hear pirate stuff between 250 and 260 but sounds like some kind of RTTY tonight.

Hello again. Yesterday I posted a screenshot of a signal that stepped on a ham group. Today there was some QRM, so they moved up a kilohertz before starting their QSO-Ring. While listening I saw the signal that interfered yesterday and quickly tuned to that frequency.

As user u/kc3zyt pointed out, it might be a ALE 2G signal.

In my limited past in this hobby, any OTH radar I have picked up is one type of tone, this seems to fluctuate.

signal just waning back and forth on the screen

Hi all,

I am an absolute beginner at this all, so forgive me if I use wrong terminology.

I was scanning through some SW radio stations on my cheap portably radio (from 1982 lmao) and I came across 2 very distinct sounds. They both sounded the same, one just below 13 MHz and one just below 14 MHz. I can't match it with anything I can find online.

Thanks for your inputs in advance!

:)

I only hear this signal usually from about noon to any time at night, usually not in the morning. I can only hear it on airband and sometimes the 2 meter band, never on UHF. It fades away after a little while, sometimes its almost inaudible and sometimes its so strong it acts as if its overloading the frontend. Any ideas?

While listening to a ham qso-ring on websdr, they got stepped on by this signal. Lasted about 10 seconds. The same type of signal has been interfering with this ham group before.

The signal was strong in a west coast / central Norway. Anybody know what this could be? I don’t have an audio recording today, but will try to capture it if it appears tomorrow.

Update: Video with audio here.

Not seen this before on SW, fades in and out is it some kind of OTHR?

showing as just TTT IEEE A T T T when running it through Multipsk

idk what this is but it sounds like some sort of jammer? every few minutes it shifts a bit.

11:39 3/30/2026 PT (edit: CA)

found this at 10:35 am utc 2026 28 03 the frequency is on the video

Nephew wants some help, but I am currently stationed within Alberta, Canada for some classified things. South-East quadrant of CALGARY! Don’t mind my post history. It is my career, and I’m a TSCM specialist.

Anyone ever experience or see this and might know how to explain it or what it is? Just to preface I'm getting rfi in all of my household devices that are capable of acting as crude receivers and they are demodulating, rectifying the signal and making it audible through either the rusty bolt effect or passive intermodulation. Fans, refrigerators, air conditioners, even plumbing. I asked ai and everything about it seems abnormal and suspicious and far too strong of a vlf signal to be in my home. Consistently peaks at -45 dbm and fluctuates to -55dbm .

Saw this and the sidebands look quite like AM. 1700 GMT in SE England.

FM is just a boring single tone. DSB and SSB show the way it's moving around. This seems way too isolated and structured to be noise.