| − | Starting in [[World War II]], governments began using shortwave broadcasts as a means of getting their broadcasts to people in enemy territory. The [[United States]] government started the [[Voice of America]], and [[Great Britain]] broadcast their [[BBC]] signals, over shortwave into the [[Axis]] countries. Later during the [[Cold War]], Western shortwave stations such as the Voice of America would be an important source of news from the free world for those living behind the [[Iron Curtain]]. The [[Soviet Union]] countered this with their [[Radio Moscow]] which used high powered transmitters to broadcast [[communist]] propaganda around the world in many languages. Some countries including [[China]], [[North Korea]], and, during World War II, [[Germany]] and [[Japan]], used [[jamming]] of shortwave radio signals in an attempt to prevent their citizens from listening. | + | Starting in [[World War II]], governments began using shortwave broadcasts as a means of getting their broadcasts to people in enemy territory. The [[United States]] government started the [[Voice of America]], and the [[United Kingdom|United Kingdom's]] [[BBC]] signals, over shortwave into the [[Axis]] countries. Later during the [[Cold War]], Western shortwave stations such as the Voice of America would be an important source of news from the free world for those living behind the [[Iron Curtain]]. The [[Soviet Union]] countered this with their [[Radio Moscow]] which used high powered transmitters to broadcast [[communist]] propaganda around the world in many languages. Some countries including [[China]], [[North Korea]], and, during World War II, [[Germany]] and [[Japan]], used [[jamming]] of shortwave radio signals in an attempt to prevent their citizens from listening. |