In September 1945, the Red Army invaded Bulgaria, and a reign of terror began under "Sovietization" of the country. Bulgarians, who took up armed resistance to the imposition of Communism, were known as the Goryani (Горяни -- also transliterated as Goriani), or “Man of the Forests" or "Ones of the Forest.”
In January 1950, CIA’s Office of Policy Coordination (OPC) “Plan of Operation for Bulgaria” was approved by the Assistant Director Policy Coordination (Frank Wisner), Director of Central Intelligence, and by the U.S. Department of State in February 1950. One of the approved lines of action was, “This will necessitate the immediate establishment of covert broadcasting facilities as near as possible to Bulgaria and simultaneous preparation for the distribution of printed material with the target area.”
“Radio Goryanin” shortwave programs over the two mobile transmitters began April 1, 1951, with 30-minute broadcasts. The exact frequency was changed every few minutes to avoid jamming the transmissions. The programs opened with the militaristic, nationalist anthem "One Covenant" and ended similarly with the anthem "Shumi Maritsa."
The Bulgarian Directorate of State Security (DS) reacted to “Radio Goryanin” by trying to locate the station. For example, on May 5, 1951, a DS report contained this passage: "There is still no accurate data on her whereabouts, and who has created and manages it. Intelligence suggests that it is located somewhere in the country, near the Greek border, or on a ship in the waters of the Mediterranean."
1953 was an important year for “Radio Goryanin” broadcasts as the mobile stations were changed out to a recently installed high-powered transmitter near Athens. In June 1953, in addition to the standard broadcasts, CIA headquarters suggested that broadcasts make use of the recent disturbance in East Germany and Czechoslovakia - with emphasis on the spontaneity of the outbreaks, the defections of East German police, and the brutality of the reprisals -- but with warnings against premature action.
In October 1953, a new program format was inaugurated to broadcast "nationalist-communist propaganda: “Hristo Botev.”. The new program eliminated the old recorded introductions and made references to the "Brotherhood for the Freedom of Bulgaria."
In May 1954, the Bulgarian Intelligence Service DS created a special directorate, "Radiooko" (radiokontrarazuznavane) to clarify and work on signals for available illegal hostile radio stations." In one report, there was this comment: "The broadcasts of the radio station "Goryanin" in their goals and purpose are divided into two types. The first addressed the couriers of the radio station and the second - the population. Of course,, the ones addressed to the couriers have coded form." The following representative sample program attributed to “Radio Goryanin or “Hristo Botev” is taken from one DS Report.
October 1, 1951: “The whip will deliver a message to one of the messengers of the Free Brotherhood. Warning! Speaking to the courier Stone. Stone, the sun rose. You have a new backpack. Watermill No 3. At 4, 8, 3, 4, 1. Cut branches up to 4, 2, 8, 6, 5. The pine trees. End.”
“Hristo Botev" last known broadcast was on July 30, 1962; on August 9, 1962, "Radio Goryanin" terminated its broadcasts. The scripts and tapes of both “Radio Goryanin” and “Hristo Botev” are presumably lost or not available publicly to research.
Details of both “Radio Goryanin” and “Hristo Botev” are included in:



