Every week, one short wave radio station in Cuba
broadcasts 97 messages coded in fax-like tones. A computer program
easily available to the public changes the tones into numbers, and the
Cuban spies then decode the numbers into words.
A second Cuban spy
station transmits 16 messages per week in the dots and dashes of the
175-year-old Morse code – secret messages to Havana spies who may be
older or less technologically savvy.
Sixteen years after the arrests in Miami of five Cuban spies who
got their secret orders by short wave transmissions, Havana is still
using a system that fell out of favor in the cloak-and-dagger world with
the end of the Cold War.
There are many more modern and efficient
ways of communicating secrets by using satellites, burst transmissions,
one-time emails and other means, said
Chris Simmons, a retired Pentagon
counter-intelligence officer who specialized on Cuban affairs.
It transmits 11 to 14 messages
per day, a total of 96 per week, on the same schedule each week but
using a dozen different short wave frequencies, said Chris Smolinski,
41, a Maryland software engineer who monitors the spy stations as a
hobby.
Cuba’s most famous numbers station, known as “Atención”
because of the opening line of the deadpan female voice in Spanish that
started its transmissions, went off the air just late last year,
Smolinski.
The lack of any accent in the voice
of the
Atención station was explained in December by Jorge García
Vázquez, a Cuban in Berlin who has been researching the links between
Havana and the STASI, the former East Germany’ intelligence service.A
Jan. 10 1977 letter in the STASI archives shows Cuban intelligence Maj.
Eddy Herrera had requested the equipment for a numbers station,
preloaded with the Spanish words for one through zero, Attention,
Goodbye and Final, Garcia Vázquez reported.
http://www.miamiherald.com/2014/02/16/3939953/cuban-spies-received-secret-messages.html