According to the affidavit, during this time frame, the CuIS often communicated with its clandestine agents in the United States by broadcasting encrypted radio messages from Cuba on shortwaveradio frequencies.
Clandestine agents in the United States monitoring the frequency on shortwaveradio could decode the messages using a decryption program provided by the CuIS. Such methods were employed by defendants previously convicted of espionage on behalf of Cuba.
South Pole explorer Admiral Richard Byrd used the company's shortwave in 1933 to communicate from just off the Chilean coast to CBS Radio in New York City.
Many people in rural areas get most of their news from radio, which is dominated by the state broadcaster, although several stations based abroad broadcast to Zimbabwe on shortwave.
Many people in rural areas get most of their news from radio, which is dominated by the state broadcaster, although several stations based abroad broadcast to Zimbabwe on shortwave and medium wave.