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Amateur radio frequency allocation

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We use cookies to improve your experience on our website. By using our website you consent to all cookies in accordance with our updated Cookie Notice. Everything from space exploration signals to HAM radios are vying for room on the radio spectrum, in which frequencies range from 3Hz to 3,GHz. The map above, from the U. Department of Commerce , vividly illustrates the complexity of this allocation system. Nearly all of the radio spectrum is already divided into a number of civilian and military uses.
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HF Ham Radio Bands | HF Frequencies | Electronics Notes

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The Backbone Of VHF Amateur Radio May Be Under Threat

A story that has been on the burner for a few weeks concerns a proposal that will be advanced to the ITU World Radiocommunication Conference It originates with French spectrum regulators and is reported to be at the behest of the Paris-based multinational defence contractor Thales. The sting in its tail is the proposed relegation of amateur radio to secondary status of the widely used two-meter band MHz to permit its usage by aircraft. The machinations of global spectrum regulation politics do not often provide stories for Hackaday readers, but this one should be of concern beyond the narrow bounds of amateur radio. Most parts of the radio spectrum are shared between more than one user, and there is usually a primary occupant and a secondary one whose usage is dependent upon not interfering with other users. While some countries have wider band limits, the two-meter band between MHz and MHz is allocated with primary status to radio amateurs worldwide, and it is this status that is placed under threat.
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Frequency allocation

It is a narrow band of just 50kHz and is shared with the primary user. Because of the small allocation amateurs have at 10MHz, it is by agreement used only for CW and narrow band digital modes. It is an excellent DX band and normally has propagation to somewhere in the world at anytime of the day or night and at anytime in the sunspot cycle. It is also high enough in frequency that aerials become a much more manageable size, so even a modestly equipped station should be capable of making regular DX contacts on CW or digital modes.
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Call Search. New to Ham Radio? My Profile. Just as many of us have a favorite fast food that we come back to time after time Radio Amateurs tend to have a favorite band that they use more frequently than other bands.
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