Amateur Frequency

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This information is presented for people that are NOT hams, or amateur radio operators, that want to know something about the frequencies that hams are legally allowed to use.

Information about the US Amateur Bands is available on the Frequency Allocations page as well as the frequency bands chart.. Printing the band charts. Download and print PDF documents using Adobe Reader.

The usual formula is: minimum total length (in feet) = 1005 / f (in MHz), where f is the lowest intended frequency. Subtract 4% if using insulated wire …

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ac6v’s guide to ham radio frequencies and general frequency listening quick click iaru region 2 mf/hf band plan – effective jan 1st 2008. amateur band plans and frequency …

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Scanner Frequencies and Radio Frequency Reference for Amateur Radio

The American Radio Relay League (ARRL) is the national association for amateur radio, connecting hams around the U.S. with news, information and resources.

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Since 1925, the International Amateur Radio Union (IARU) has been the watch and spokesman for the world Amateur Radio community. Learn More

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Information for developers of satellites planned to use frequency bands allocated to the amateur satellite service. Download Now MISSION PLANNING

Notes: 1. The modes in ( ) are the new designations to be instituted with Phase 3D. 2. The AO-10 beacon is an unmodulated carrier. This satellite has suffered computer damage making it impossible to orient it for optimum service or solar illumination.

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Amateur radio frequency allocation is done by national telecommunications authorities. Globally, the International Telecommunication Union (ITU) oversees how much radio spectrum is set aside for amateur radio transmissions.