Border blaster

A border blaster is a broadcast station that, though not licensed as an external service, is, in practice, used to target another country. The term "border blaster" is of North American origin, and usually associated with Mexican AM stations covering large parts of the United States and United States border AM stations covering large parts of Canada. Conceptually similar European broadcasting included some pre–World War II broadcasting towards the United Kingdom, "radio périphérique" around France and the US government funded propaganda station Radio Free Europe targeting eastern Europe.