r/signalidentification

Hello everyone, I have been seeing this signal a lot on my private OpenWebRx instance. I checked SigIdWiki and apparently a similar one appears as unidentified. Has anyone heard or seen it? I’m in North America. 😊

Hi everyone,

I received a repeating Morse-like signal on shortwave around 4.5 MHz.

Date: February 8, 2025

Time: around 21:46 (local time / UTC+8)

Location: Indonesia

The signal sounded like repeating CW/Morse continuously.

I’m still learning about SW and RF, so I’m curious what this could be.

Could this be a beacon, utility station, or something else?

Hello i am new to the hobby. Found this pulsing signal in the orbital band, it has been there quite a while so ruled out satillites. What are your thoughts

Sorry about the really low quality audio.

Data transfer perhaps?

263.600mhz

when i was scanning via my RTL SDR i came to this signal and i have searched for it for a long time and i couldn't find the source and also i couldn't decode it.

can anyone identify this signal for me and the decoding method?

6:50 pm UTC

Captured PDT, 12:00, SoCal.

I don’t know where it comes from but it has significant fading.

6:44 am UTC

Captured here in Copenhagen with my RTL SDR V4. Still a beginner and I'm having trouble recognizing this weirdly pulsating signal at 444.550 mhz.

It seems like a OTH radar but its not like anything I know. 13.70 MHz

Hello , Im not a siginter or anything but doesn't this signal seem kinda Russian Military in origin? The radio does a key tone preamble before the crypto "opens" and is modulated into the carrier wave. Am on the right track to assume so? It seems like some sort of C2 station as there are strong signals which seem to be originating close to Kalachevo (in Russian borders) and some outstations further east responding to the main C2 station which is what I presume to be receiving.