Showing posts with label FBIS (CIA radio monitoring service). Show all posts
Showing posts with label FBIS (CIA radio monitoring service). Show all posts

Sunday, 19 October 2025

Radio Vltava — East Germany's failed covert information operation in 1968

This article looks at a clandestine radio station operated by East Germany in support of the Warsaw Pact invasion of Czechoslovakia in 1968. [1]

Although named after the same river, the Radio Vltava of 1968 and 1969 should not be confused with the eponymous station currently operated by the public broadcaster 
ČRo (Český rozhlas – Czech Radio). 

Some ČRo veterans have said the name of the current station was deliberately chosen at its launch in 1972 as an attempt to erase the memory of the earlier operation.

I also look at some other pro-Soviet radio activity targeting Czechoslovakia in 1968.

Acknowledgements

Along with the published sources listed at the end of this article, I must thank my BBC Monitoring colleague Simona Kralova, whose knowledge of both Czech and German helped me to understand the problems that Radio Vltava faced. 

Thanks also to my fellow radio hobbyists Kai Ludwig and Wolfgang Büschel, who confirmed several points about what happened in 1968 from their informed perspectives either side of the inner German border.

Most of the detailed published accounts of Radio Vltava's operations are in Czech or German and I wanted to tell its story in an English-language article. 

R
ADIO VLTAVA

Summary: Radio Vltava was run by, and from, East Germany (the German Democratic Republic, GDR), targeting audiences in Czechoslovakia following the Soviet-led invasion and occupation of the country in August 1968. Posing – entirely unconvincingly – as an authentic Czechoslovak station, it broadcast hardline pro-Kremlin material supporting the invasion and criticising the reforms of the Prague Spring that had prompted it.

Radio Vltava's technical operations were competent. It aired a substantial volume of daily output, produced in a professional broadcasting environment and carried by a powerful transmitter. But its programmes were poorly conceived and executed. The station's operators gave no sign that they understood the target audience. The broadcasts failed to win over listeners to accept the invasion. In the face of criticism, including from Czechoslovakia's communist government (which had no control over the station and opposed its existence), Radio Vltava closed in February 1969.

Background: The invasion of Czechoslovakia

Late in the evening of 20 August 1968, Soviet forces began their invasion of Czechoslovakia, intending to put an end to the reforms of the Prague Spring spearheaded by Alexander Dubček.

While retaining communist rule, these reforms were liberalising politics and society to an extent that alarmed the Kremlin, which feared they threatened Soviet control throughout Eastern Europe. Some of the Soviet Union’s allies, notably the rulers of East Germany, shared these worries.

The armed forces of three other Warsaw Pact countries – Poland, Hungary and Bulgaria – took part in the invasion (codenamed Operation Danube). [2] 

The role of East Germany

The GDR had also been earmarked to take part in the invasion. But, at the last minute, it was realised that the sight of troops wearing the German feldgrau uniform invading Czechoslovakia only 23 years after the last lot had surrendered there would not look good. GDR forces were therefore held back from crossing the border (except, reportedly, for a few specialists and liaison officers).

Although the GDR's military played no role on the ground during the invasion and subsequent military occupation of Czechoslovakia, it had already been assigned another role – conducting information warfare against its people.

It had been decided that the GDR would run a radio station, broadcasting in Czech and Slovak, and intended to be heard throughout Czechoslovakia, but based in East Germany.

The station's objective would be to induce support for the invasion and undermine resistance to it.

A pro-invasion newspaper, Zprávy ("News"), would also be produced in the GDR and distributed in Czechoslovakia.

Preparations in the month before the invasion

The decision to go ahead with such propaganda work appears to have been triggered by a meeting in Warsaw on 14 and 15 July 1968 at which the leaders of the USSR, the GDR, Bulgaria, Hungary and Poland discussed the problems created for them by the Prague Spring and the option of mounting an invasion.

One immediate result of the meeting in Warsaw was that the GDR's external broadcasting service, Radio Berlin International (RBI), began broadcasting in Czech on 22 July (one source says 21 July) and in Slovak on 31 July (30 minutes in each language at 0500-0600 and 1800-1900 local times). Until then, RBI had not broadcast to Eastern Europe, its services to Europe only being in Danish, English, French, German, Italian, Spanish and Swedish.

Other preparations were made. In late July, a team of GDR radio specialists drove around Czechoslovakia in private cars, checking the reception of various East German radio stations. These included Deutschlandsender on the longwave frequency of 185 kHz; another longwave station, Radio Volga, which broadcast in Russian to Soviet troops in Germany on 263 kHz; and RBI on the mediumwave frequencies of 1430 and 1511 kHz. [3]

Based on their findings, it was decided to use to 1430 kHz (210 metres) to reach audiences in Czechoslovakia, and that the signal should come from an existing mediumwave transmitting station at Wilsdruff, just outside Dresden, close to the Czech border.

(RBI's existing mediumwave broadcasts on both 1430 and 1511 kHz came from a transmitting station in the Berlin suburb of Köpenick.)

The transmitter at Wilsdruff was a powerful one, 250 kilowatts (kW). Until August 1968, it had operated on a different frequency (1043 kHz), carrying the domestic service Radio DDR 1.

East German officials visited the Wilsdruff station at the end of July and told the staff there that they would be receiving new orders, which should remain secret. Restrictions were placed on the staff's movements and armed guards were posted at the station.

Test transmissions on 1430 kHz from Wilsdruff began, consisting of Czech brass band music, and what would become the new station's musical motif.

The tests were heard by West German radio hobbyist Wolfgang Büschel. In later years, Büschel recalled first hearing the test transmissions on 1430 kHz on his car radio while driving near Frankfurt around a week before the invasion. He later used a directional aerial to confirm that the tests were coming from the Dresden area, not from the usual Radio Berlin International transmitter site at Berlin-Köpenick.

While Wilsdruff would be the transmitting station, the broadcasts to Czechoslovakia would originate from studios at the HQ of GDR radio, the well-known Funkhaus building on Nalepastrasse in East Berlin.

Thanks to inside information now available, we know even the exact studio in the Funkhaus that was used. It was studio K4.


"Radio Vltava" starts its broadcasts

The name chosen for the station was Radio Vltava, after the river flowing through Prague.

As a tuning signal it used a theme from the well-known tone poem Vltava by the 19th century Czech composer Bedřich Smetana.

In this recording, the musical theme is followed by the announcement: "This is Radio Vltava. This is Radio Vltava. We are broadcasting on two hundred and ten metres, 1430 kHz, in the Czech and Slovak languages."

Broadcasts began early on 21 August, just hours after the start of the invasion, using 1430 kHz mediumwave from the Wilsdruff transmitter. Many people first heard about the new station's existence when, at 0525 local time, Czechoslovak Radio (then still in the hands of the legal government) warned listeners that it was operated by the invading forces. [4]

Among the very first items broadcast by Radio Vltava was what would become the famous (and false) claim by the Soviet news agency TASS that Czechoslovakia's leaders had requested "urgent assistance" from the USSR and its allies, "including assistance by their armed forces", to counter the threat from "counter-revolutionary forces which have entered into collusion with foreign forces hostile to socialism".

The TASS statement was followed on Radio Vltava by one from the invading forces, saying they had answered the "invitation".

"We are coming to render you fraternal help… to defend the cause of socialism in Czechoslovakia," the statement by the invaders said.

Slogans and announcements used in the first days of broadcasts included: "Listen to Radio Vltava. For the homeland, socialism and peace" and "Only a socialist radio station gives you correct information."

The announcement in this recording says: "You are listening to Radio Vltava, the socialist voice of truth. You are listening to Radio Vltava, the socialist voice of truth. Only a radio station connected with socialism gives you correct information. You are listening to Radio Vltava."

Broadcasting schedule

In the days immediately after the start of the invasion, Radio Vltava was on the air around the clock.

By early September, it had introduced a broadcast schedule of 0500 to midnight local time (0400-2300 GMT), which remained in place for the remainder of the station’s existence.

Once the schedule had settled down, about a third of output was speech and two thirds music. A typical hour had a three- to five-minute news bulletin at the top and bottom of the hour, along with three or four commentaries, each between five and 10 minutes. The rest of the hour was filled with music.

Frequency usage

Along with its main frequency of 1430 kHz from the Wilsdruff (Dresden) transmitter, Radio Vltava was also heard in its first few days on 1322 kHz, from a transmitter at Wiederau, near Leipzig, which usually relayed external service broadcasts from Radio Moscow.

It's possible that was a mistake, and that it had been intended that the Leipzig-Wiederau transmitter would relay Radio Moscow in Czech and Slovak. The German operators responsible for the programme feed from Berlin to Wiederau may have been unable to distinguish the Czech/Slovak broadcasts of Radio Vltava from those of Radio Moscow.

A mistake would also be the most likely explanation for reports that Radio Vltava was heard, though perhaps only briefly, on 1043 kHz (Radio DDR 1's frequency) from Dresden-Wilsdruff. [5]

I've not found any evidence to support claims by Czech sources in the 21st century that Radio Vltava also broadcast from a mediumwave transmitter in Karl-Marx-Stadt (Chemnitz).

Problematic pronunciations and troublesome translations

While Radio Vltava's technical operations were professional (excepting the minor glitches with frequency usage noted above), its announcers were ridiculed by listeners for the poor quality of their spoken Czech and Slovak.

Many of the announcers appeared to be Germans, who faced the usual problems that native German speakers have when speaking Czech and Slovak, such as pronouncing "v" as "f", and struggling to distinguish between a soft "p" and a hard "b". Reportedly, they also sometimes had a characteristically German way of pronouncing the accented Czech consonants ž, š, č, ř, ň.

It was also suspected that some of the announcers were Russian, or were very familiar with the Russian language, as they pronounced Russian names as a Russian would, not as a Czech speaker would say them. The suspected Russian announcers would also place the emphasis on the wrong syllable in Czech words and give a harder pronunciation to some "e" sounds.

My BBC Monitoring colleague Simona Kralova says about the 0:34 clip on this page:
The first presenter speaks in Slovak, the second in heavily accented Czech.

In this clip, Simona says the announcer at 1:04 is almost certainly a German posing as a Czech speaker, and clearly struggling with what he is reading out.

The announcers were therefore mocked by listeners.

In this cartoon, the Vltava duck is saying "It’s a pity I can’t speak Czech."

And this cartoon mocks the German announcers for pronouncing "v" as "f".

And it wasn’t just a problem of accents.

Fred Eidlin, the author of a Radio Free Europe research paper in November 1968 noted that Radio Vltava used expressions not found in modern Czech and "which sound artificial".

Eidlin added: "Ideological expressions often give the impression of having been taken directly from Russian manuals and translated badly."

Political problems too

Radio Vltava's broadcasts made no concessions to sceptical or hostile Czechoslovak listeners. There was no attempt at a soft sell.

Instead, the output was hardline and uncompromising. For anyone who remembers listening to Radio Berlin International, the output of Radio Vltava was in the same vein.

See the appendix below for transcripts of some of Radio Vltava's commentaries in the week after the invasion. 

Czechoslovak Radio warned its listeners against Radio Vltava. Here's a recording of the station at České Budějovice doing that on the first day of the invasion, when it was still in the hands of the legal authorities (third clip on this page).

Czechoslovakia's communist leaders complained to their East German counterparts that Radio Vltava's broadcasts were counter-productive. Listeners were mocking the announcers' accents, while the station's extreme commentaries generated irritation or hostility, rather than acceptance of the Soviet stance. People were either tuning in for a laugh, or turning off in disgust.

There was also hostility towards the newspaper Zprávy produced in East Germany, which took the same hardline position as Vltava.

Closedown

In the face of such criticism, and with little or no evidence that the broadcasts were having the desired effect – indeed, more likely the opposite – the East Germans abandoned Radio Vltava. The station made its last broadcasts on 12 February 1969, just under six months after it had begun.

The following day it was replaced on 1430 kHz by Radio Berlin International, including in Czech and Slovak.

In an indication of a lack of coordination on the part of the invasion forces, the newspaper Zprávy continued to be published. 

The Czechoslovak authorities were pleased with Vltava's closure. Radio Prague's English service commented two days later that the development was welcome, and said on 9 March 1969 that Vltava had closed "to the relief of the vast majority of our people".

Eventually, in April 1969, Dubček was forced by Moscow to resign, and Czechoslovakia entered a 20-year night of "normalisation".

Other pro-Soviet broadcasts at the time

Along with Radio Vltava, several other stations – both overt and clandestine – broadcast in support of the invasion.

Workers' Voice of the Republic (Dělnický hlas republiky) was first heard by BBC Monitoring from early on 26 August on mediumwave (1178 kHz) and shortwave (7125 and 7285 kHz). It also announced the use of 200 kHz longwave and said it was on the air around the clock. Radio Free Europe said it might have been on the air as early as 22 August. Its broadcasts denounced those by the legal Czechoslovak authorities as being from "revisionists, counter-revolutionaries and foreign agents". RFE said that it stopped broadcasting on 3 September after announcing that that it had fulfilled its "patriotic and partisan" task. It may have been broadcasting from Poland or Hungary. 

Radio Zare (Dawn) began broadcasting on 29 August
on 1250 kHz mediumwave. It was a classic "black" (falsely attributed) operation, claiming to support the reformist Dubček leadership, while putting out disinformation. It was immediately denounced by the legal Czechoslovak authorities. RFE suggested that it broadcast from Poland but I note that 1250 kHz was usually a Hungarian frequency.

From Poland: By 24 August, Polish state radio was using its longwave frequency (227 kHz), which usually carried its domestic service, to air programmes in Czech at certain times of the day. By 5 September, Polish radio was broadcasting in Czech for 20 hours a day, with shortwave, mediumwave (1502 kHz) and longwave (227 kHz) being used at various times of the day and night.

It was also reported that a station on 7280 kHz shortwave operated by the Polish army was on the air for audiences in Czechoslovakia, in Polish and Czech/Slovak, at times in the morning and evening.

From Russia: From the evening of 21 August, Radio Moscow expanded its output in Czech/Slovak to round-the-clock broadcasting. At the start of 1968, it had been on the air for just 30 minutes a day in each language.

Transcripts of some commentaries on Radio Vltava

A recording of Radio Vltava from 26 August 1968 contains the following commentaries: 

Female announcer at 00:00: "…They are using wild emotions to exacerbate the situation so that a group of pro-Western anti-communist adventurers can come to power. Do not allow a handful of adventurers – who are alien to the interests of the people, peace, socialism and the security of the country – to trample on the good name of the Czechoslovak people and to play with their fate. Expose their political diversions! Delete provocations! In the name of the bright future of the socialist homeland, in the name of the nation, people, be prudent."

Male announcer at 00:45: "Dear friends, dear listeners. We received exciting news today. A Nazi nest was discovered near the National Theatre. In the building opposite the footbridge to Slavonic Island, not only a warehouse of foreign weapons was found, not only radio and encryption equipment, not only a special set of gloves designed not to leave fingerprints, but also documents of obvious Nazi origin. Among the fascist pamphlets and posters was a picture of Adolf Hitler. Inexperienced boys are waging an offensive campaign against the Russians. The fascists have acted. We repeat: The fascists from the NDP have begun their activities. It is no coincidence that the counter-revolution is accompanied by the threat of fascism coming from the West. Dear friends. Be vigilant! Draw attention to suspicious gatherings and buildings where mysterious activities are taking place. Tell our authorities or any authorised person about it. Today, a picture of Hitler was found near the footbridge to Slavonic Island. And tomorrow our entire homeland may be covered in swastikas. Czechs and Slovaks, don't let it happen."

Female announcer at 02:25: "People! Listen and judge for yourself. Is it in the name of humanism? On 21 August, a group of criminals calling themselves adherents of socialist humanism pushed a group of children into the path of a Soviet tank 40 km from Prague. Children of the local boarding school. The tank crew, in order not to crush our children, drove their tank off a high cliff and died. Three Soviet boys sacrificed their lives for the lives of our children without hesitation. They could not have acted otherwise. Illegal radio stations, provocateurs on the streets, constantly brandishing humanism and democracy. Think about the case of the tank crew and you will understand the value of the humanism of the instigators and appreciate real humanism. The imperialist agency and the local counter-revolution misuse the word humanism, which is dear to everyone, only to deceive the gullible and incite them to dangerous acts. Think! Nation, freedom, democracy, humanism - these bright words are now being abused by reaction and counter-revolution for their black betrayal. Those who recently tried to throw Czechoslovak children under a Soviet tank would like to provoke an even worse tragedy today. A fratricidal war! The enemy longs for victims. Look around and see how many victims it wants. Citizens of Czechoslovakia, remember this. Be vigilant! Meet the call of President Ludvík Svoboda. Actively defend order and peace! Protect yourself from provocateurs! Protect yourself from provocations by counter-revolutionaries! It's in our interest."

NOTES AND SOURCES

[1] The Warsaw Pact was the shorthand term for the Soviet-dominated military alliance formed after the signing in 1955 in Warsaw of what was formally the Treaty of Friendship, Cooperation and Mutual Assistance. The alliance, intended as a counterweight to NATO, was also known as the Warsaw Treaty Organisation (WTO).

[2] The other two members of the Warsaw Pact, Albania and Romania, refused to take part in the invasion, and Albania left the WTO altogether shortly afterwards.

[3] This field survey is described in a German article which focuses on the technical aspects of Radio Vltava, and which I have used as the source of some other information in this article.

[4] In August 1968, neither Czechoslovakia nor the GDR were using DST (summer time), and so local time there was one hour ahead of GMT.

[5] Radio Vltava on 1430 kHz was using the 250kW transmitter normally used for Radio DDR 1 on 1043 kHz. To allow for that, Radio DDR 1 on 1043 kHz was switched to a less powerful standby transmitter at Wilsdruff.
 

Sources for this article

Radio Vltava's broadcasts were widely reported at the time by the Western and Czechoslovak press, and were documented by the US government’s monitoring agency (the Foreign Broadcast Information Service, FBIS, via its outstation in Vienna), FBIS’s partner BBC Monitoring, and the monitoring service of Radio Free Europe (RFE, based in Munich, where the station could be heard easily).

Behind-the-scenes details of the station’s operations were not confirmed until after the end of the Cold War when official archives were opened and some of those in the GDR involved in the project were able to speak. 

Observations of Radio Vltava's broadcasts by radio hobbyists are also a valuable source of information about the frequencies and transmitter sites used.

My sources for this article include the articles listed below, the archives of BBC Monitoring, memories of fellow radio hobbyists and the 1968 edition of the annual World Radio TV Handbook.

Articles and documentaries in Czech

A 2017 text and audio feature on Czech Radio’s website, including recordings of Radio Vltava: “Špatná čeština a anonymní hlasatelé. Vysílačka Vltava šířila v srpnu 1968 bludy” (Bad Czech and anonymous announcers. Radio Vltava spread delusions in August 1968)

A 2021 text and audio feature on Czech Radio’s website, including recordings of Radio Vltava: “Když ztichl socialistický hlas pravdy aneb Stanice Vltava plnila po srpnu 1968 éter propagandou” (When the socialist voice of truth fell silent, or Radio Vltava filled the airwaves with propaganda after August 1968) 

A 40-minute Czech Radio documentary from 2022: Jak šuměla Vltava? Aneb co vysílala východoněmecká prookupační stanice, která v roce 1968 otravovala rozhlasový éter? (How did the Vltava River murmur? Or what was broadcast by the East German pro-occupation station that was polluting the radio airwaves in 1968?)

Articles in German

A 2014 article by Radio Prague’s German service: “Propagandafunk aus der DDR in die ČSSR: Sender Vltava 1968/69” (Propaganda radio from the GDR to the Czechoslovak Socialist Republic: Radio Vltava 1968/69)

A 1999 article in Berliner Zeitung giving an overview of the story: "Der mysteriöse Sender ‘Vltava’ und sein Ende vor 30 Jahren: DDR-Schützenhilfe gegen den 'Prager Frühling'" (The mysterious Radio Vltava and its end 30 years ago; GDR support against the "Prague Spring")

A 2018 article on the radiomuseum.org site focusing on technical aspects of the station, including the Wilsdruff transmitter: "Radio Vltava, Radio Moldau Geheimsender aus der DDR" (Radio Vltava, secret transmitter from the GDR) 

The radiomuseum.org site also has photographs of the Wilsdruff transmitter.

Articles in English

Radio Free Europe (RFE) research paper (11 November 1968): This assessment by Fred Eidlin of RFE’s research department, written while Radio Vltava was still active, gives an excellent overview of the station’s operations and output as they were known by that time, and reports some of the Czechoslovak reaction.

Article by Don Moore on radio and the 1968 events in Czechoslovakia in the August 1993 edition of Monitoring Times


IF YOU ENJOYED READING THIS ARTICLE…

… you may be interested in others that I’ve written about radio stations that were run as exercises in political or military influence in the last four decades of the 20th century:

Voice of the Coast: This soft-sell British station targeted Arabic listeners in the 1960s, wooing them away from listening to the anti-Western broadcasts of Voice of the Arabs from Nasser's Egypt.

Radio Spark: A fully "black" (meaning: falsely attributed) CIA-run station that sought to exploit the turmoil in China during the Cultural Revolution of the second half of the 1960s.

First August Radio: Another pure "black" station, this one was part of Soviet "active measures" targeting the Chinese army between 1979 and 1986.

Radio Atlantico del Sur: Britain’s Spanish-language station for Argentine troops during the 1982 Falklands War, known within the MOD as Project Moonshine. It had as many enemies in Whitehall as in Argentina. 

Radio Truth: A look at this and other covert stations – such as Voice of the Resistance of the Black Cockerel – run by apartheid South Africa in the 1970s and 1980s to undermine neighbouring countries.

Al-Quds Palestinian Arab Radio: The "intifada station" – funded by Libya and broadcasting from southern Syria between 1988 and the early 21st century. 

Sunday, 29 September 2019

An Oriental PsyOps Mystery — the story of Radio Spark

(If you enjoy reading this article, you may also be interested in another on Soviet "active measures" against China — the story of Radio Ba Yi.) 

The self-deception of an intelligence organisation by counterfeit material deliberately faked by its own staff or agents always makes for an intriguing story.

In fiction, such deceptions are the basis of Graham Greene's comic novel Our Man in Havana and John le Carré's The Tailor of Panama.

My story below is, however, not fictional.


Cover of British paperback edition of the book that broke the secret of CIA's psyops during China's Cultural Revolution. The CIA obtained a court order to redact more than a page worth of the six pages devoted to the subject, likely containing key operational details, before publication

The Cultural Revolution and the CIA

The story begins in May 1966 with the start of the Cultural Revolution in China.

Detecting signs of resistance to the revolution and its Red Guards, particularly in southern China, the CIA sought to encourage such opposition through the distribution of printed matter by balloons launched from Taiwan.

The balloons carried bogus leaflets, pamphlets and newspapers purporting to be from counterrevolutionary groups within China. In fact, they were written by CIA propagandists.

The story is taken up by Victor Marchetti and John D. Marks in their 1974 book The CIA and the Cult of Intelligence [1]: 
Almost immediately after it began, the balloon project was a success. The CIA's China watchers soon saw evidence of increased resistance to the Red Guards in the southern provinces... Within weeks, refugees and travellers from the mainland began arriving in Hong Kong with copies of the leaflets and pamphlets that the agency's propagandists had manufactured – a clear indication of the credence being given [to] the false literature by the Chinese masses.
 Encouraged by this success, the CIA looked for ways to expand its propaganda operation: 
A decision was therefore made to install on Taiwan a pair of clandestine radio transmitters which would broadcast propaganda – and disinformation – of the same nature as that disseminated by the balloon drops. If the Chinese people accepted the radio broadcasts as genuine, the CIA reasoned, then they might be convinced that the countermovement to the Cultural Revolution was gaining strength and perhaps think that the time had come to resist the Red Guards and their supporters still more openly. 
The left hand and the right hand

The CIA's radio stations in Taiwan duly began their bogus broadcasts. But a problem arose.

The part of the CIA (the Directorate of Plans) that was running the secret balloon drops and black radio transmissions to China did not inform the separate CIA division (the Directorate of Intelligence) that was, as its name suggests, collecting and analysing information about what was happening inside China. [2]

Among the Intelligence Directorate's subdivisions was one responsible for monitoring foreign radio stations: the Foreign Broadcast Information Service (FBIS).

FBIS's daily reports on the content of public radio broadcasts from and to China were circulated within the CIA, the State Department and the Pentagon, and to others both inside and outside the US government.

Marchetti and Marks continue the story: 
Even though the FBIS editors are members of the CIA's Intelligence Directorate, the operators in the Clandestine Services are reluctant to reveal their propaganda operations to them. As a result, for its Far East daily report the FBIS frequently monitored and distributed the texts of programs actually originating from the agency's secret stations on Taiwan.
"Highly successful" CIA radio operation

In short, FBIS was unaware of the provenance of the CIA's broadcasts, and published transcripts of them in the belief that they had been aired by genuine dissident stations inside China. Marchetti and Marks noted: 
CIA operators seemed untroubled by this development and the accompanying fact that the agency's own China analysts back at headquarters in Washington (along with their colleagues in the State and Defence Departments) were being somewhat misled. Nor did they appear to mind that unwitting scholars and newsmen were publishing articles based to some extent on the phony information being reported by the FBIS [...]
Communist China was an enemy, and the writings of recognised journalists and professors publicising its state of near collapse and potential rebellion helped to discredit Peking in the eyes of the world  which was after all in keeping with the CIA's interpretation of American foreign policy at the time. 
The CIA's secret radios therefore proved to be highly successful. 
What were the stations in question?

The identity of the CIA's radio stations (though not their origin) was revealed as early as January 1967 by the respected Japanese newspaper Asahi Shimbun.

In a dispatch from Hong Kong it said that two pro-communist but anti-Mao clandestine stations, Spark (火花  Huohua) and Voice of the [People's] Liberation Army (解放之声  Jiefangjun zhi Sheng), had been heard since the middle of the previous month.

Such a start of broadcasts in December 1966 fits well with the narrative by Marchetti and Marks.

Asahi Shimbun noted speculation by China watchers that the two stations originated from mainland China. The ruse by their CIA operators – to pose as genuine underground radios broadcasting from within the People's Republic – had therefore been successful.

More than a year later the deception was continuing to be successful. In July 1968 the New York Times said in an article on the Voice of the Liberation Army's broadcasts: 
It is a mark of the turmoil in China that the broadcasts have commanded the attention of political analysts and led to speculation that a clandestine station may be operating there.
In these early years the two stations made several short broadcasts (just five to 10 minutes) each day on shortwave starting in the late afternoon, Chinese time, and then at intervals throughout the evening. The brevity of the programmes lent credibility to the idea that these were underground stations forced to keep their transmissions short to avoid detection by the Chinese authorities.

In late 1968 a third station thought to be part of the "Radio Spark group", calling itself Contingent of Proletarian Fighters (斗士  Wuchanzhe Zhandoushi), was heard. (Between May 1971 and April 1974, it would simply call itself Fighters.)

Handover to Taiwan?

After Richard Nixon made his ground-breaking visit to China in February 1972, all three stations became inactive, possibly as part of Washington's moves to improve relations with the Chinese.

Sheila O'Brien of the University of Michigan says in a chapter of Clandestine Broadcasting, published in 1987, that the CIA may have handed over its Chinese black broadcasting operations to Taiwan's own intelligence services at some time between 1972 and 1978. [3]

According to a prominent US writer on shortwave broadcasting, Lawrence (Larry) E. Magne, the Fighters and Liberation Army stations disappeared in June 1972, reappeared briefly later that year and then began new phase of broadcasting, in conjunction with Sparks, in April 1974. (This information is from a global survey by Magne, "Clandestine Broadcasting 1975", in the 1976 edition of the annual World Radio TV Handbook.)

An alternative theory

The interruption in 1972 and the 1974 relaunch reported by Magne could be the period identified by O'Brien as when the stations of the "Radio Spark group" were transferred from CIA to Taiwanese control after Nixon's visit.

However, Magne says they were under Soviet control, and had been so ever since the original launch in 1966.

Magne's labelling of the stations as originating in the USSR is at odds with several pieces of evidence that point to the CIA/Taiwanese connection, although this was not the first time that he had made such a claim of Soviet backing.

In the 1973 edition of How to Listen to the World, Magne said Radio Spark was operated by the KGB and staffed by Chinese exiles associated with the so-called "28 Bolsheviks" faction (a group of Chinese who had studied in Moscow in the 1920s and 1930s), although he gave no source for that information.

Questions of provenance

Magne's assertion was repeated in Julian Hale's 1975 book Radio Power, which became a standard work on international broadcasting and radio propaganda. Hale also said in relation to Sparks:
A similar operation, sharing transmission facilities with Sparks, calls itself Radio of the Chinese People's Communist Party, thus rubbing in their refusal to identify Mao Tse-tung's clique and his less-than-authentic party with the true followers of Marxism-Leninism.
Evidence of the provenance of Radio of the Chinese People's Communist Party (中国共 广播台  Zhongguo Gongchangdang Guangbo Diantai), which was heard between 1968 and 1971, is scant. It made transmissions of just 10 minutes in length, like the outlets of the Spark group, and like them favoured transmission times in the late afternoon and evening. It also used similar slogans to those of Voice of the Liberation Army (one of the Spark group), and like that station used two separate frequencies to carry the same programme, though not synchronously.

However, a detailed report on clandestine broadcasting to China by the Japan-based Asian Broadcasting Institute (ABI) noted evidence that the Communist Party station was not in the Radio Spark group but was part of a separate, but also Taiwan-sponsored, group of outlets.

Known Soviet clandestine broadcasts to China 

While I disagree with the claims by Magne and Hale that the Radio Spark group of stations came from the USSR, there were undoubtedly other clandestine radios targeting China that were Soviet in origin, notably one calling itself Radio Ba Yi (八一   Ba Yi Diantai).

Bay Yi literally means Eight One and is a reference to 1 August, China's Army Day. 

Radio Ba Yi was launched during the 1979 Sino-Vietnamese War (in which the USSR backed Vietnam) and was last heard in late 1986 when Moscow-Beijing relations were improving.

Another Soviet-operated station, Red Flag (  Hongqi), was first heard in 1971 and then rather intermittently. Like Radio Eight One, it disappeared in late 1986. There was ample evidence that both transmitted from the USSR. Red Flag was notable for broadcasting on the mediumwave (AM) band rather than shortwave.

Although I disagree with Magne about the origin of the Radio Spark group, the description in his 1976 article of the modus operandi of the Radio Spark group is valid, whatever their provenance:
A variety of techniques besides aired statements is used to create the impression that there are rebel army units "on the run" within China itself. The transmissions are brief and often erratic, with station names and schedules changing often enough to create a guerrilla flavour.
More outlets

In 1978, a fourth station of the Radio Spark group was heard, calling itself October Storm (十月暴  Shiyue Fengbao).

Radio Spark targeted a youth audience, while Contingent of Proletarian Fighters and Voice of the Liberation Army were aimed at workers and members of the armed forces respectively.

Reporting the operations of the Radio Spark group, the New York Times said in May 1984 that "some references to Nationalist ideology led to speculation that they come from Taiwan".

Another station that may have been associated with the Radio Spark group was a fake version of China's main state radio network, the Central People's Broadcasting Station. [4]

This phony CPBS was certainly in operation by May 1974 and a similar station had been heard in February 1972. It operated on frequencies close to that of the genuine station, and played recordings of the latter, interspersed with bogus commentaries.

All five of the above stations continued into the 1980s. BBC Monitoring reported in January 1984 that only one of the four members of the Radio Spark group was heard on any given day. The first 10-minute transmission of the day was heard at 1700 Chinese local time and was then repeated up to seven further times over the course of the next two and a half hours.

The fifth station, the impostor version of the Central People's Broadcasting Station was reported by BBC Monitoring to have been heard again in May 1987 after a break since 1985, airing two daily transmissions of around 30 minutes each at 1900 and 2100 Chinese times.

From land or sea?

Were the clandestine broadcasts from a ship in the Taiwan Strait?
Map © CNN

In 1984-1985, various Western publications reported that Radio Spark and its sister stations were broadcasting from a ship in waters off China. The Los Angeles Times said in May 1984 that Western monitors believed the ship was in the South China Sea. 

The same suggestion was reported by Jane's Defence Weekly in July and October 1985, while Asiaweek said in April 1985 that the transmitting ship was in the East China Sea (Taiwan lies between the East China Sea and the South China Sea).

As early as 1970, David W. Conde had said in his book CIA: Core of the Cancer that in the summer of 1966 a fleet of pirate ships had been deployed by the CIA off the Chinese coast in a black propaganda campaign intended to cause China to collapse from within. (Though note that Marchetti and Marks said that the CIA's transmitters were installed "on Taiwan", rather than on a ship.)

Further support for the idea of the broadcasts coming from a ship came from an observation in 1982 by a member of the Asian Broadcasting Institute who noted that whenever a typhoon appeared in the Taiwan Strait, broadcasts of the stations of the Radio Spark group appeared to be suspended.

The ABI member also used direction-finding equipment of Japan's public service broadcaster NHK to track the Radio Spark group, with results that were consistent with the signals coming from waters off Taiwan.

The ABI's observation does not, however, necessarily mean that the Radio Spark group was using a shipborne transmitter. Land-based transmitters in Taiwan might also have had to shut down during typhoons, for example to lower their transmitting aerials.

End of the broadcasts

Contingent of Proletarian Fighters was last heard in 1984, Radio Spark in 1985, while the Voice of the Liberation Army, October Storm and the phony Central People's Broadcasting Station went silent in 1989.

Notes and sources

[1] Victor Marchetti was a member of the CIA between 1955 and 1969. For the last three years of his service (i.e. covering the early period of the Cultural Revolution in China) he worked in the office of the CIA director. John D. Marks joined the US State Department in 1966, resigning in 1970 after the US invasion of Cambodia.

[2] After 1973, the Directorate of Plans was known as the Directorate of Operations. Marchetti and Marks say that within the CIA the directorate was generally referred to as the "Clandestine Services".

[3] O'Brien's comments are quoted in the report by the Asian Broadcasting Institute (ABI) mentioned elsewhere. I have drawn extensively on the ABI's report in writing this article.

[4] Although its Chinese name (中央人民广播  Zhongyang Renmin Guangbo Diantai) is unchanged, Beijing now refers to the Central People's Broadcasting Station in English as China National Radio.

© 2019. Material may be reproduced if attributed to Chris Greenway and any original source.