Here’s the actual machine behind the numbers station. This machine pronounces, in a monotone voice, a string of numbers used by intelligence agencies for one-way shortwave radio communication with their agents in enemy countries.

This machine belongs to a German collector who has a vast collection of various spy-gadgets. There were many machines of this particular model produced in East-Germany for usage within the DDR itself or other communist bloc nations, like the Soviet Union or Cuba.

The voice for this machine comes from a swapable printed circuit board with EEPROM’s on it. In this video another board was inserted, which contained the Spanish voice samples, in the so-called Speech/morse generator, or “Sprach/morse generator”, as it was referred to in Germany.

These EEPROMS enabled the machine to pronounce the numbers and other characters in Spanish or other languages depending on which card was inserted on the back of the machine.

 

 

This machine pronounces, in a monotone voice, a string of numbers used by intelligence agencies for one-way shortwave radio communication with their agents in enemy countries. This machine belongs to a German collector who has a vast collection of various spy gadgets. There were many machines of this particular model produced in East Germany for usage within the DDR itself or other Communist bloc nations, like the Soviet Union or Cuba.

The printed circuit boards only contains the voice samples of the lady pronouncing numbers in either German or Spanish. The EEPROMs never contain the actual message. For a message to be put in the machine a paper tape was used that not only contained the actual message intended for the agent, but also (coding that determined) the number of times this message should be repeated by the machine.

The Speech/morse generator can also change the speed at which the pronunciation occurs, giving the voice a slightly higher or lower pitch.

 

The Spanish Voice Behind The “Atencion” Numbers Station

The German Voice Behind The East-German Numbers Stations 1

The German Voice Behind The East-German Numbers Stations 2

How To Operate The Machine Manually For Morse

How To Operate The Machine With A Tape

How To Operate The Machine Manually For Speech

 

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Videos
  • Number Stations Revealed - Part 1 of 6: The Spanish Voice Behind The

    Number Stations Revealed - Part 1 of 6: The Spanish Voice Behind The "Atencion" Numbers Station

  • Number Stations Revealed - Part 2 of 6: The German Voice Behind The East-German Numbers Stations 1

    Number Stations Revealed - Part 2 of 6: The German Voice Behind The East-German Numbers Stations 1

  • Number Stations lecture Delft University of Technology - Feb 8 2011

    Number Stations lecture Delft University of Technology - Feb 8 2011

  • Number Stations Revealed - Final:  Swapping datacards and the interior

    Number Stations Revealed - Final: Swapping datacards and the interior

  • Number Stations Revealed - Part 6 of 6: How To Operate The Machine Manually For Speech

    Number Stations Revealed - Part 6 of 6: How To Operate The Machine Manually For Speech

  • Number Stations Revealed - Part 3 of 6: The German Voice Behind The East-German Numbers Stations 2

    Number Stations Revealed - Part 3 of 6: The German Voice Behind The East-German Numbers Stations 2

Rare Number Stations Book by Havana Moon - Uno DOS Cuatro: A Guide to the Number Stations