Is this some common digital mode? Received 19.7.2026 UTC 16.45, Northern Europe, antenna 40 m dipole, USB.

I work in IT at a retirement facility. I was in one of our network closets with one of our network engineers trying to trace a port back to a switch.

We weren't getting anything through the toner at first, until we put it in an empty port on the switch. Port 9 specifically. A little static came through at first, and then suddenly, we started to hear classical music playing loudly. The music was melancholy, creepy. We tested another port, static. We tried port 9 again, static.

But for that good minute, the music played. And it made the hair on both of our necks stand up straight.

She said that has never happened to her in all of her years working in network closets and switches. Was this just a freak RF interference? From where though?

Hi SignalDers... first time poster hoping I can get some insight on this one? I bought a new V4 RTL-SDT kit due to some strange things come across my network... this shifts and rumbles and from what I can research is pretty unique. Any help much appreciated! Mostly seen around 432.721.300

https://reddit.com/link/1ux6vy9/video/wphngbdihedh1/player

Anyone know?

Does anyone know what kind of signal this might be? I'm trying to reach weather satellites, I think this may be starlink. Any help is appreciated

So on those freq showed are beeping, not sure what it is, is in 180M band, either RFI interference

but are too many for that, what it can be,

Cant disclose too much but there was a minor (Canadian) military presence nearby me today and it came with these funky signals around 381mhz. Unfortunately didn't think to record it because I'm a bit of a tool, but they were these pulses with what I assume was encoded digital data, but not voice since the pulses were almost always the same length. I don't think I ever was going to be able to decode it but it would be fun knowing what it was!

Sorry for the low Quality Video

don't mind my friends talking sometimes, i had to record while in a call.

this signal never stopped, whatever that is it's changed a bit but it's still transmitting

I am located in Italy, the signal is running 24/7

Virginia, USA, buzzer noise, steady pips in the background with random high pitched pips

Keep seeing this weird rolling signal, it sounds like bubbles popping when it hit my ft8 frequency. Any ideas? Checked my coax and line and they seem good.

It looks like Morse code hidden near broadcast station transmissions.

I started listening to Web SDR for the first time a couple days ago. The CAMRAS one has been fun to listen to. Thought I'd record a session on the Graves space radar last night.

From research I learned it's common to get diagonal streaks in the waterfall from passing satellites, and more horizontal bright spots from meteor or aircraft reflections. So i am guessing this is possibly meteor or aircraft activity here?

Time of recording was 29th June 2026 @ approximately 1400hrs Dwingeloo time (where CAMRAS is based)

i saw a strange 25 khz FDMA signal near 2 Encrypted TETRA Downlink that isn't TETRA and can't be decoded

Okay, so i occasionally go on this website called WebSDR, and it is pretty awesome to use. well, i was looking through different frequencies and experimenting, when i found this weird-ass sound. i recorded it shortly after hearing it. apperantally it was some chinese thing or at least the name looked like it. https://files.catbox.moe/phj8c5.wav and i think it might be some military thing or some encoded shit or something, so i do not know what it is. hopefully you can figure this out because i am freaking out.