Search results
Results from the WOW.Com Content Network
American radio amateurs may use a maximum of one watt of radiated RF power, on any ham frequency authorized for data emissions, to control RC models. [10] Canadian radio amateurs may use any amateur frequency above 30 MHz for the control of RC models. [11] Plus or minus 5 MHz is a common repeater frequency offset in the 70 cm band.
The frequencies used are within the 70-centimeter band, which is currently otherwise reserved for government and amateur radio operations in the United States and most nations worldwide. LPD hand-held radios are authorized for licence-free voice communications use in most of Europe using analog frequency modulation (FM) as part of short range ...
The nominal "17 m" band actually covers 16.6–16.5 m. The nominal "15 m" band actually ranges from 14.28–13.98 m. By common sense, the "15 m" band ought to be called "14 m", but that name has been in longtime use for a shortwave broadcast band. 80 metres or 80 / 75 meters – 3 500–4 000 kHz – 85.65–74.95 m actual
Transponders may be inverting or non-inverting. An example of an inverting transponder would be a 70cm to 2m transponder which receives on the 432.000 MHz to 432.100 MHz frequencies and transmits on the 146.000 MHz to 146.100 MHz frequencies by inverting the frequency range within the band. In this example, a signal received at 432.001 MHz ...
Frequency range Center frequency Bandwidth Type Availability Primary user Other users 6.765 MHz: 6.795 MHz 6.78 MHz 30 kHz A Subject to local acceptance: Fixed service: Mobile service: 13.553 MHz: 13.567 MHz 13.56 MHz 14 kHz B Worldwide: Fixed: Mobile services except Aeronautical mobile (R) service: 26.957 MHz: 27.283 MHz 27.12 MHz 326 kHz B ...
The 4-meter band, occupying the 70 MHz frequency range, has been historically significant for various regional radio services. Post-World War II, the United Kingdom allocated a segment of the band, specifically 56-68 MHz, to British community radio stations, a provision that lasted until 1949.
Shortwave bands are frequency allocations for use within the shortwave radio spectrum (the upper medium frequency [MF] band and all of the high frequency [HF] band). Radio waves in these frequency ranges can be used for very long distance (transcontinental) communication because they can reflect off layers of charged particles in the ionosphere and return to Earth beyond the horizon, a ...
UHF CB is a class-licensed citizen's band radio service authorised by the governments of Australia, Europe, Malaysia, New Zealand, Singapore, Vanuatu, and in the PMR446, UHF 477 MHz band. [1] UHF CB provides 77 channels , including 32 channels (16 output, 16 input) allocated to repeater stations.