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Friday, 25 May 2007 13:39 |
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Look at the dial on a old AM radio and you'll see frequencies marked from 535 to 1605 kilohertz. Imagine that band extended out many thousands of kilohertz, and you'll have some idea of how much additional radio spectrum is available for amateur, government and commercial radio bands. It is here you'll find aircraft, ship, fire and police communication, as well as the so-called "shortwave" stations, which are worldwide commercial and government broadcast stations from the U.S. and overseas. Amateurs are allocated nine basic "bands" (i.e. groups of frequencies) in the high frequency range between 1800 and 29,700 kilohertz, and another seven bands in the Very High Frequency (VHF) and Ultra High Frequency (UHF) ranges. Even though many Amateur Radio conversations may be heard around the world, given the right frequency and propagation conditions, Amateur Radio is basically two-way communication.
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Last Updated on Friday, 25 May 2007 16:39 |
