🇷🇺Moscow Calling… in Morse code Russian “Spy Numbers Station”, known as M12, was active on 9319kHz at 19:40 UTC Sept 17 2026. Received in 🇮🇹Milan using a Cold War-era Plessey PR2250 receiver radio and MLA30+ outdoor antenna.

M12 sends the call in slow Morse, then transmits the cyphered message at high speed

I used to drink beer and listen to numbers stations. Tell me I'm not an RF geek.

@CedricLeighton attention all hit teams in Europe.

Have you ever thought to give the audio to an AI and try decode something? I also live in Milan and I could help you in this. Good job for sharing these with us by the way

Caught M12 eariler the week on SDR/ham/lna rig I’m just figuring out - from east coast Canada. Blew my mind!

@grok, describe the history of number stations.

Cc @RadioHacking

@MASAOMORITR

@grok what does it say?

Love the look of that radio - despite a modern HAM radio - like my Yaesu FTDX-101 with spectrum display is a lot easier to navigate

M12 still active?

Need any decodes?

258 1

@n4hpg Which is probably an identifier to which OTP pad to use for decoding the ciphertext. Like unit 258, block 1. Or page 258, paragraph 1... 😁 Now just need to find the pads source somewhere...

@n4hpg 1 is the number of messages about to be transmitted. With M12, it can be 0, 1, or 2. 258 should be the recipient's ID. So, "258 1" should mean "Hey 258, a message is about to be sent to you."

@grok what says the morse code

А что ИИ говорит про этот код?

UAHY DE UHMV QTC 1

No. Please don’t spread bullshit. That Morse tell 258 1

I read it, I just posted something I copied many years ago, often.

Morse code

Id love that radio. I dont have one that cool, but I have these ex Military use ones in my collection. They work of course. A Watkins-Johnson, and a Racal.

So what is the message?

The message is OTP-cyphered. Only the recipient holds the key to decrypt it.

Thank you.

@ItsTheEnforcer one for the decoders

@RadioHacking

Why the need to do this?

They got the Burger King message and want in on the action.

Klar, da ist so ein Spion, der fährt heimlich mit einem LKW in den Wald, wirft ein Dieselgenerator an um Strom zu erzeugen, für seine Kurzwellen-Empfangsanlage aus den 60-gern, baut eine Riesenantenne auf, um dann vier Zahlen zu empfangen. 🤣 Nur Amateure betreiben so etwas noch.

We used to trail "auxiliary intelligence gatherers" or AIG's in the Bering Sea. They always were masked as "fishing vessels" and their call signs began with a "u" or a "v". Their code was sent on side-keys and was so fast that you could only make out the V or U.

Il motivo?

Quotidiane comunicazioni unidirezionali tra servizi di intelligence e le loro risorse all’estero

258 repetat, 125H, si iar 258. Care spionaj?