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Stuff You Should Know

Selects: What is a Numbers Station?

11 Apr 2026

Transcription

Chapter 1: What are numbers stations and how do they work?

0.031 - 1.473 Unknown

This is an iHeart Podcast.

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2.615 - 27.135 Michael Easter

Guaranteed human. 2%. That's the number of people who take the stairs when there is also an escalator available. I'm Michael Easter. And on my podcast, 2%, I break down the science of mental toughness, fitness, and building resilience in our strange modern world. Put yourself through some hardships, and you will come out on the other side a happier, more fulfilled, healthier person.

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27.52 - 35.522 Michael Easter

Listen to 2%, that's T-W-O percent, on the iHeartRadio app, Apple Podcasts, or wherever you get your podcasts.

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38.708 - 51.465 Unknown

On the Serving Pancakes podcast, conversations about volleyball go beyond the court. Today we have a little best friend compatibility test. Okay, how long have we been best friends? Since the day we met. As the League One volleyball season heads towards its final stretch, there's no better time to tune in.

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51.586 - 68.261 Unknown

You'll hear unfiltered analysis, behind-the-scenes stories, and conversations with leaders making an impact across the sport. Whether you're following the final push of love season or just love the game, Serving Pancakes brings you closer to the action and the people shaping the future of volleyball. Open your free iHeartRadio app, search Serving Pancakes, and listen now.

69.065 - 72.883 Josh Clark

Presented by Capital One, founding partner of iHeart Women's Sports.

73.302 - 88.998 Unknown

On paper, the three hosts of the Nick Dick and Paul show are geniuses. We can explain how AI works, data centers, but there are certain things that we don't necessarily understand. Better version of play stupid games, win stupid prizes. Yes.

89.158 - 93.602 Chuck Bryant

Which, by the way, wasn't Taylor Swift who said that for the first time. I actually, I thought it was. I got that wrong.

93.622 - 102.111 Unknown

But hey, no one's perfect. We're pretty close, though. Listen to the Nick Dick and Paul show on the iHeartRadio app, Apple Podcasts, or wherever you get your podcasts.

Chapter 2: What historical events led to the rise of numbers stations?

108.711 - 128.773 Chuck Bryant

I hope you're enjoying your year, your month. I hope you're enjoying the very hour in which you are coming across this. It is the select episode for the week. And I'm picking this one because I honestly don't remember much about it and I got to listen to it. So maybe I'll learn it all over again. It's about number stations and it's called What is a Number Station?

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132.668 - 136.353 Unknown

Welcome to Stuff You Should Know, a production of iHeartRadio.

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142.36 - 174.896 Chuck Bryant

Hey, and welcome to the podcast. I'm Josh Clark with Charles W. Chuck Bryant. And this is Jerry. And this is Stuff You Should Know. Can you say it in German? You speak German. Don't even jive me. Zwei, drei, fünf, acht, sieben. Now, can you do that in a little girl voice? You're just toying with me. Come on, do it. No, you always make me play St. Polly Girl. I'm tired of it. St. Polly Girl.

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175.517 - 191.628 Chuck Bryant

No, this is apparently even younger than the St. Polly Girl. It's like a little girl. And it was a live little girl. Who? In the Swedish Rhapsody number station. It was a little girl reading out numbers and letters in German.

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Chapter 3: How have numbers stations evolved since World War I?

191.989 - 215.145 Chuck Bryant

Which makes it even creepier. Yeah. This is a very neat subject, so kudos to you for tossing this one out there. Well, I've been waiting for it to publish. I'd seen it in the calendar coming up and coming up. I'm like, come on and publish. And I think it published on Friday. This is brand new. Right out of the oven. Yes. And we're talking about it just as they are completing their decline.

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216.607 - 230.953 Chuck Bryant

So we are on top of this. Well, I think that, well, we'll get into it. I think that's what makes it even more interesting is that it's still happening. All right. Numbers stations. Numbers stations. Numbers stations. Yeah, like you said, both words are pluralized. It's a little clumsy.

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231.574 - 256.41 Chuck Bryant

And number stations are, we should just come out and say, they're shortwave radio transmissions or transmitters making really weird, baffling is the best word for it, transmissions. Yeah. And have been doing so apparently since at least World War I. Oh, really? Yeah.

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256.63 - 283.888 Chuck Bryant

Supposedly the first mention of a numbers station came from a German magazine in World War I. In World War II, they were in full swing. Sure. But apparently they somehow popped up first around World War I, which makes them some of the earliest shortwave transmissions in the world. Because shortwave radio didn't come around, at least in the commercial use, until about 1920. Yeah.

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Chapter 4: What types of messages are transmitted via numbers stations?

283.868 - 299.257 Chuck Bryant

World War I was a few years before that, if you'll remember correctly. Yeah, that's why I didn't even think that that was possible. But like you said, World War II was when they were in full swing. They really peaked in the Cold War. And they've been dying out slowly ever since.

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299.317 - 306.771 Chuck Bryant

But I think one of the neatest things is they are still... If you have a shortwave radio, you can tune into a frequency and hear...

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308.202 - 328.472 Chuck Bryant

beep one two seven five eight you know it's it's usually like some sort of tone we should mention to jerry of the future yeah you're supposed to leave that beep in because it's part of the number station yeah we beep jerry to signal when we want something edited but yeah number station it's not always a beep it'll just have some sort of sometimes it's a bit of a song

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328.891 - 347.743 Chuck Bryant

Yeah, like the Swedish Rhapsody or the Lincolnshire Poacher, a British, English, UK-ish folk song. Yeah. I'm so scared of them whenever I say stuff like that. And the reason that the transmission starts off with a tone or a beep or a song is so you can...

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347.723 - 370.018 Chuck Bryant

It alerts, like, here comes a transmission, tune your station, hone in, make sure you get some good reception, because the secret code is about to be revealed. And that's exactly what everyone is pretty much in consensus on, that what comes after this and what is broadcast over these numbers stations are secret codes. Yeah.

369.998 - 390.218 Chuck Bryant

Again, like for the Swedish Rhapsody Station, it is a little girl speaking in German reading numbers and letters, seemingly random numbers and letters, and then the transmission is over. And that happens like – or it used to happen. That's a defunct –

390.198 - 420.137 Chuck Bryant

numbers station now but it happened on a fairly regular schedule there's other ones the attention station is a woman saying attention and then reading Spanish numbers and then repeating them over and over again and then going on to the next set and everybody no one can say for certain but virtually everyone in the world from Cecil Adams at Straight Dope to the head of the UK's trade and industry agency

420.117 - 451.282 Chuck Bryant

Say these are secret transmissions for spies. The whole basis of them was for espionage. Yeah, and the reason why everyone is speculating that that is absolutely the case, which it almost certainly is, like we said, is because no government to this day has come forward and admitted this or owned this. It is all still technically speculation because you cannot point to a factual statement.

451.342 - 469.77 Chuck Bryant

The closest we've ever come is they finally got – Someone from the United Kingdom, a spokesperson. That was the dude from the trade agency. Oh, really? Yeah. The exact quote is, people should not be mystified by them. They're not, shall we say, for public consumption. Yeah.

Chapter 5: Why do some believe numbers stations are still operational today?

469.79 - 484.228 Chuck Bryant

And that's the only thing on record that any government has ever spoke about what these transmissions are. Right. So the idea that they are government transitions, or the reason we have to speculate is because the government's never claimed them. Yeah.

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484.208 - 507.947 Chuck Bryant

On the flip side, the reason everyone thinks that they are government-backed, clandestine transmissions is because these are pirate radio frequencies, pirate radio transmitters. Yeah, my first thing was like, just find one of these and look it up and find out what the deal is. Yeah, you would think so. They're totally unlicensed. Yeah. Nobody knows exactly where they are.

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507.987 - 525.94 Chuck Bryant

They're illegal, technically. Yes, they're very illegal because they transmit over air traffic control frequencies. Well, that's a big one. And no one investigates them. There's no investigation into these number stations whatsoever. So the fact that... The government won't say anything about them.

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526.781 - 552.053 Chuck Bryant

And the fact that the government isn't investigating these very blatantly out in the open weird baffling transmissions suggests that, yeah, everybody's right, that these are government-backed transmissions used to communicate anonymously and in one direction to spies embedded in foreign countries. Yeah, I was about to call it a conversation, but it's really not.

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552.354 - 576.18 Chuck Bryant

I think on the BBC documentary I saw they called it a monologue. Right. You're just sending a one-way message. Exactly. All right. Right after this break, we're going to talk a little bit about shortwave radio technology, the secret key to sending these messages.

580.615 - 597.071 Michael Easter

2%. That is the number of people who take the stairs when there is also an escalator available. I'm Michael Easter, and on my podcast, 2%, I break down the science of mental toughness, fitness, and building resilience in our strange modern world.

597.091 - 608.462 Michael Easter

I'll be speaking with writers, researchers, and other health and fitness experts and more to look past the impractical and way too complex pseudoscience that dominates the wellness industry.

608.695 - 612.84 Unknown

We really believe that seed oils were inherently inflammatory.

Chapter 6: What role do enthusiasts and organizations play in monitoring numbers stations?

613.181 - 619.009 Unknown

We got it wrong. Many of the problems that we are freaked out about in the world are the result of stress.

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619.289 - 636.171 Michael Easter

Put yourself through some hardships, and you will come out on the other side a happier, more fulfilled, healthier person. Listen to 2%, that's T-W-O percent, on the iHeartRadio app, Apple Podcasts, or wherever you get your podcasts.

0

638.902 - 655.583 Unknown

On the Serving Pancakes podcast, conversations about volleyball go beyond the court. Today we have a little best friend compatibility test. Okay. How long have we been best friends for? Since the day we met. As the League One volleyball season heads towards its final stretch, there's no better time to tune in. We really are like yin and yang, vodka and tequila.

0

655.943 - 669.246 Unknown

You'll hear unfiltered analysis, behind the scenes stories and conversations with leaders making an impact across the sports. Today we have Logan Lednicki. I feel like our fan base in general is very connected. It's like a comforting feeling getting to play at home.

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669.927 - 689.4 Unknown

Whether you're following the final push of love season or just love the game, serving pancakes brings you closer to the action and the people shaping the future of volleyball. Jordan Thompson had that microphone out. God forbid we make a mistake or cuss at our coach. Open your free iHeartRadio app, search Serving Pancakes, and listen now.

689.74 - 693.025 Unknown

This has been Serving Pancakes, and we'll catch you on the flip side.

694.247 - 698.693 Josh Clark

Okay. Presented by Capital One, founding partner of iHeart Women's Sports.

699.938 - 722.031 Unknown

I feel like it was a little bit unbelievable until I really started making money. It's Financial Literacy Month, and the podcast Eating While Broke is bringing real conversations about money, growth, and building your future. This month, hear from top streamer Zoe Spencer and venture capitalist Lakeisha Landrum-Pierre as they share their journeys from starting out to leveling up.

722.011 - 738.054 Unknown

If I'm outside with my parents and they're seeing all these people come up to me for pictures, it's like, what? Today, now, obviously, it's like 100%. They believe everything. But at first, it was just like, you got to go get a real job. There's an economic component to community striving.

Chapter 7: How does shortwave radio technology facilitate secret communications?

738.074 - 749.25 Unknown

If there's not enough money and entrepreneurship happening in communities, they fail. And what I mean by fail is they don't have money to pay for food. They cannot feed their kids. They do not have homes. Communities don't work unless there's money flowing through them.

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750.192 - 757.278 Unknown

Listen to Eating While Broke from the Black Effect Podcast Network on the iHeartRadio app, Apple Podcasts, or wherever you get your podcasts.

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769.889 - 798.478 Chuck Bryant

All right, the key to this whole thing is sending a short way. Like, you might think, in this day and age, why not just send a Telefax? No, why not send an email or, you know, surely there are safer ways to send espionage, this information, highly classified instructions to go kill the leader of a country perhaps. Right. Like if you want to activate Reggie Jackson to kill Queen Elizabeth.

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798.858 - 827.837 Chuck Bryant

Kill Norberg. Yeah. Yeah. How would you do it in this day and age? You'd think an email would do it. No. And you want to know who proves definitively that that is not safe or secure? um who jimmy fallon edward snowden yeah there are um if you use a computer you leave a trace yeah it's virtually impossible to erase anything on a computer yeah if you think you have then you haven't

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827.817 - 849.117 Chuck Bryant

Plus, if you are, say, emailing somebody, you're transmitting what's supposed to be highly sensitive, even encrypted information over a network. That stuff can be captured. Like, go listen to your employer spying on you episode. Yeah. You can't do it. Like, you can communicate like that, but you're leaving digital traces everywhere. Right.

849.097 - 869.008 Chuck Bryant

The beauty of the shortwave radio transmission is that, again, it's anonymous and it's one directional. But if you get caught with a shortwave radio, at least say back in the 60s or the 70s or something, it wasn't weird. It didn't prove that you were a spy. Yeah, you're just tuning in to my stories.

Chapter 8: What are the implications of numbers stations in modern espionage?

869.488 - 892.182 Chuck Bryant

Exactly. I'm just listening to the BBC World Service. Shortwave energy, radio energy, it's all determined by the power of your transmitter. So if you've got a humongous transmitter, you can send, and it didn't need to be that big, but you can send a message, one-way message, to the other side of the world. Right. And the reason it can travel across the planet is because it's bouncing off of...

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892.162 - 919.941 Chuck Bryant

it literally is bouncing off the ionosphere of the earth or of well yeah of the earth uh 50 to 375 miles up above our surface it's in the upper atmosphere and solar ionization creates an electrical charge and that charge reflects that signal right back down to earth it's called uh sky wave or skip i like sky wave sky wave yeah and that's why you can with a seemingly pretty simple piece of equipment

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919.921 - 941.524 Chuck Bryant

I can send a message to the South Pacific. Yeah. From my bedroom. Well, I don't know if I'd have one big enough for my... My bedroom's pretty big. I wanted to see how big these things were, actually. You know, like if they say really big ones to send them further and further, like how big do they get? They get very huge. They can cover scores of acres. Oh, okay.

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941.544 - 965.211 Chuck Bryant

A big shortwave antenna, which is why it can get very expensive. Gotcha. So that's bigger than my bedroom. You can also use ones that are the size of your bedroom. It depends not only, like you said, on the size of the transmitter. It depends on the atmospheric conditions, too. Supposedly, shortwave transmissions are received best at sunrise and sunset, and no one's 100% sure.

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965.492 - 982.948 Chuck Bryant

But it has to do with the ionosphere. Yeah. And because that's where the northern lights are happening. Yeah. That's where solar rays hit the Earth's atmosphere, and the atoms lose their electrons, I believe, so they become ions, forming the ionosphere.

983.489 - 1004.249 Chuck Bryant

And because this is constantly changing, you can't predict exactly how a shortwave radio wave will act, but you can kind of guess, well, this time the sun's least active or most active wave Whatever. It has some impact on that sky. What's it called? The sky what?

1004.269 - 1004.71 Unknown

Sky wave.

1004.85 - 1022.59 Chuck Bryant

The sky wave effect. So you can communicate with somebody in a foreign country, right? Yeah. And not only can it not be tracked, it's very difficult to trace who sent that, where that transmission is coming from. Yeah. It's impossible to trace who's receiving it. That's right.

1022.971 - 1040.647 Chuck Bryant

So you have no idea who in your country is getting this, which means that you're broadcasting to anybody and everybody who feels like listening to this a secret code. But the fact is, if you use the right kind of secret code, no one can crack it.

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