Quick Answer
Ham radios can be used for long-distance communication, including across country borders, but it's subject to regulations and frequency allocations.
International Frequency Allocations
Ham radios operate on various frequencies allocated by the International Telecommunication Union (ITU). In the Americas, for example, the 10-meter band (28.3-29.7 MHz) is designated for long-distance communication with other countries. However, the specific frequency and power limit may vary depending on the country you’re in.
Modes of Operation
To communicate across country borders, you’ll need to use a mode that’s suitable for long-distance communication. Single-sideband (SSB) and amplitude modulation (AM) are popular modes for ham radios. SSB is more efficient and can be used for communication over longer distances, but it requires a more complex setup. AM, on the other hand, is simpler to use but may not be as efficient for long-distance communication.
Operating Requirements
To communicate across country borders, you’ll need to have a ham radio license, which typically requires passing an examination administered by the relevant national communications regulatory agency, such as the Federal Communications Commission (FCC) in the United States. You’ll also need to follow the rules and regulations of the country you’re in, as well as the country you’re communicating with. This may involve obtaining a special permit or license for international communication.
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