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Civil and military organisation's utilized different frequencies to communicate and no infringement on either sector would take place. For emergencies involving civilian aircraft, the radio frequency used is VHF 121.5 MHz and for military aircraft incidents, the frequency used is UHF 243 MHz.
PMR446 (Private Mobile Radio, 446 MHz) is a licence-exempt service or UHF CB in the UHF radio frequency band, as personal radio service, and is available for business and personal use in most countries throughout the European Union [1], Malaysia [2], and Singapore [3].
The 1.25-meter, 220 MHz or 222 MHz band is a portion of the VHF radio spectrum internationally allocated for amateur radio use on a primary basis in ITU Region 2, and it comprises frequencies from 220 MHz to 225 MHz. [1]
The list of frequency ranges is called a band allocation, which may be set by international agreements, and national regulations. The modes and types of allocations within each frequency band is called a bandplan ; it may be determined by regulation, but most typically is set by agreements between amateur radio operators.
0–9. 76.1 fm; 76.5 fm; 80.2 fm; 82.5 fm; 87.5 fm; 87.6 fm; 87.7 fm; 87.8 fm; 87.9 fm; 88.0 fm; 88.1 fm; 88.2 fm; 88.3 fm; 88.4 fm; 88.5 fm; 88.6 fm; 88.7 fm; 88.8 ...
The FCC asserts Amcrest marketed "UV-5R-series FM hand-held radios capable of transmitting on “restricted frequencies." "Marketing a device that is "capable of operating outside the scope of its equipment authorization,” is not allowed. [6]
The 23 centimeter, 1200 MHz or 1.2 GHz band is a portion of the UHF radio spectrum internationally allocated to amateur radio and amateur satellite use on a secondary basis.
160-meter band refers to the band of radio frequencies between 1.8 and 2 MHz, just above the medium wave broadcast band.For many decades the lowest radio frequency band allocated for use by amateur radio, before the adoption, at the beginning of the 21st century in most countries, of the 630-and 2200-meter bands.