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Historically, amateur stations have rarely been allowed to operate on frequencies lower than the medium-wave broadcast band, but in recent times, as the historic users of these low frequencies have been vacating the spectrum, limited space has opened up to allow for new amateur radio allocations and special experimental operations.
This is the navigation box for the International Amateur Radio Bands. All bands in this template are either mentioned in the International Telecommunication Union 's "Table of Frequency Allocations" or the table's footnotes, with the exception of allocations listed in italics .
FM channel numbers are most commonly used for internal regulatory purposes. The range originally adopted in 1945 began with channel 201 (88.1 MHz), or a value high enough to avoid confusion with television channel numbers, [2] which over the years have had values ranging from 1 to 83. Having a gap between the highest TV channel number and the ...
English: Regions with allocations in the 600m amateur radio band. Blue regions have official allocations based on WRC-12. Light blue regions have official allocations that are outside the WRC-12 frequencies. Green regions have experimental allocations. Operation is prohibited in red regions.
This map shows all the countries that currently have an official Amateur Radio presence on 5 MHz / 60 m, whether it be by WRC-15, Article 4.4, Special Individual Permits, Trial and/or Emergency Basis, or any combination of these. The 60-meter band or 5MHz band is a relatively new amateur radio allocation.
Frequency allocation (or spectrum allocation) is the part of spectrum management dealing with the designation and regulation of the electromagnetic spectrum into frequency bands, normally done by governments in most countries. [1] Because radio propagation does not stop at national boundaries, governments have sought to harmonise the allocation ...
To give an example, W1AW, the American Radio Relay League's Hiram Percy Maxim Memorial Station in Newington, Connecticut, is found in grid locator FN31pr. Two points within the same Maidenhead subsquare are always less than 10.4 km (6.5 mi) apart, which means a Maidenhead locator can give adequate precision from only six easily transmissible ...
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