HMO1 Cuba Spy Numbers 11635 khz am @0520utc
Nice four minutes of the start of HM01, a Cuban “Spy Numbers” broadcast featuring a traditional female announcer with switch to data using Winradio Excalibur pro and wire antenna. QTH is Tampa Florida and as you can hear, the signal strength is really strong.
Cuba Confidential 
I’m shocked, shocked, that Cuban spying is going on in the United States.
This method they are using is old but in short wave very effective.The Cuban Agents send the numeric codes to their spies and then when the transmission is over the will decoded the message using a numeric board code previously made for them in Havana.This Agents have been using it for decades.Over all this method has been in use since world war 2 by the french resistance,the OSS and even the KGB in post war years.
Ana Belen Montes used this numeric system,the red avispa used this method.
Anybody know where Flippity, Marifeli, and company were during these transmissions_