SEOUL, South Korea (CNN) -- It broadcasts only three hours a day. Its on-air reporters use fake names. And its operators don't know for sure whether their target audience is listening. Kim Seong Min, the founder of Free North Korea Radio, broadcasting from Seoul. Free North Korea Radio, based in Seoul, South Korea, broadcasts news of the outside world across the border. It's illegal for North Koreans to listen to anything other than state-run radio, and all legal radios are fixed so they can play only channels approved by the government. But the founder of Free North Korea Radio, Kim Seong Min, believes that more and more North Koreans are secretly tuning in.
@highlight
Free North Korea Radio broadcasts news across the border from South Korea
@highlight
Station's founder is former North Korean soldier who defected
@highlight
Broadcasts are funded partly by South Korean citizens and by U.S.
Kim believes the @placeholder try to jam their radio signal into North Korea, and says the North Koreans have called him a traitor.