In the shadowy corners of the shortwave spectrum lurk the Numbers Stations: strange radio broadcasts of mysterious blocks of numbers in creepy monotone voices!

It's actually an old form of spycraft which is still in use today. And as it's #WorldRadioDay let's take a listen...

A Numbers Station is a type of one-way voice link for sending information to spies in foreign countries.

Operating on Short Wave radio bands they transmit a secret code of spoken numbers. Use of Numbers Stations peaked during the Cold War, but some are still operating today.
Numbers Stations are operated by various national intelligence agencies. At set times on a pre-arranged frequency a musical tone is played, followed by a speech synthesised voice reading out blocks of numbers. To most listeners it sounds both creepy and meaningless.
However to spies it can be vital. The numbers can be decoded to reveal a message, provided the spy has the right One Time Pad (OTP) - a random number key that is only used once before it is destroyed. OTP encryption is impossible to break if done correctly.
Why broadcast your secret message on Short Wave? Because it can be picked up across the globe. All a spy needs is a shop bought SW radio, a pencil, and the correct One Time Pad and they - and only they - can decipher the message. No complex kit is required.
For decades governments have denied running Numbers Stations, and for decades amateur radio enthusiasts have documented and recorded the stations to prove they do exist. It's only recently that more information about them has begun to emerge.
The Lincolnshire Poacher was a Numbers Station run by British Intellegence from Cyprus up until 2008. It played a minute of music before a female synthesised voice would read out 200 blocks of five digit numbers. Here's a clip: https://t.co/kcXDtPxrOD
Swedish Rhapsody was run by Polish Intelligence during the Cold War. It used a Stasi Sprach-Morse-Generator to synthesize a child's voice reading out number codes in German, preceded by a song from a music box. Here's how it sounded: https://t.co/f5nHnAEwLl
Gong was a Stasi run Numbers Station operating from East Germany. A series of gong strikes would be broadcast every half hour followed by the command "Achtung!" and the code number sequences. Here's a clip: https://t.co/KiiVA7jkGc
Not every Numbers Station broadcast numbers. Some stations, such as Whalesong, broadcast 'backwards music', a series of tones that would need to be recorded and deciphered by specialist equipment: https://t.co/tMTtrMVQ6F
UVB-76 isn't a Numbers Station, but it has continuously broadcast a series of buzzing sounds for 45 years across Russia. Is it just a channel marker, or could it be a 'Dead Hand' system to launch a nuclear retaliation if Moscow is destroyed? Hmm...: https://t.co/3nkZ2T4UEl
Numbers Stations may sound quaint, but they are still used today by many countries: a global signal with unbreakable encryption that is very hard to intercept - why reinvent a method that works?

More spy stories another time...

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🌿𝑻𝒉𝒆 𝒔𝒕𝒐𝒓𝒚 𝒐𝒇 𝒂 𝑺𝒕𝒂𝒓 : 𝑫𝒉𝒓𝒖𝒗𝒂 & 𝑽𝒊𝒔𝒉𝒏𝒖

Once upon a time there was a Raja named Uttānapāda born of Svayambhuva Manu,1st man on earth.He had 2 beautiful wives - Suniti & Suruchi & two sons were born of them Dhruva & Uttama respectively.
#talesofkrishna https://t.co/E85MTPkF9W


Now Suniti was the daughter of a tribal chief while Suruchi was the daughter of a rich king. Hence Suruchi was always favored the most by Raja while Suniti was ignored. But while Suniti was gentle & kind hearted by nature Suruchi was venomous inside.
#KrishnaLeela


The story is of a time when ideally the eldest son of the king becomes the heir to the throne. Hence the sinhasan of the Raja belonged to Dhruva.This is why Suruchi who was the 2nd wife nourished poison in her heart for Dhruva as she knew her son will never get the throne.


One day when Dhruva was just 5 years old he went on to sit on his father's lap. Suruchi, the jealous queen, got enraged and shoved him away from Raja as she never wanted Raja to shower Dhruva with his fatherly affection.


Dhruva protested questioning his step mother "why can't i sit on my own father's lap?" A furious Suruchi berated him saying "only God can allow him that privilege. Go ask him"