Ads
related to: 25 watt vhf radio range calculator for cars walmart commercial
Search results
Results From The WOW.Com Content Network
Frequency assignments between US and Canadian users are closely coordinated since much of the Canadian population is within VHF radio range of the US border. Certain discrete frequencies are reserved for radio astronomy. The general services in the VHF band are: 30–49.6 MHz: Licensed 2-way land mobile communication, with various sub-bands. [a]
The 25.6 MHz to 28 MHz spectrum is heavily used for unlicensed out of band CB radio communications within the U.S. Outside of the U.S., numerous additional CB radio allocations exist, including CB radio services that overlap with the 27.54 MHz to 28 MHz allocation, paging systems, land mobile services (outside the U.S.) and additional CB radio ...
The legally protected range of a station extends beyond this range, out to the point where signal strength is expected to be 1mV/m for most stations in North America, though for class B1 stations it is 0.7mV/m, and as low as 0.5mV/m for full class B stations (the maximum allowed in densely populated areas of both Canada and the U.S.).
A radio band is a small frequency band (a contiguous section of the range of the radio spectrum) in which channels are usually used or set aside for the same purpose. To prevent interference and allow for efficient use of the radio spectrum, similar services are allocated in bands.
Land mobile radio systems use channels in the VHF or UHF bands, since the antennas used at these short wavelengths are small enough to mount on vehicles or handheld transceivers. Transmitter power is usually limited to a few watts, to provide a reliable working range on the order of 3 to 20 miles (4.8 to 32 km) depending on terrain.
351.20000–351.38125 MHz, digital voice and data, 5 watts, 30 channels, 6.25 kHz spacing; 142 & 146 MHz VHF-Digital "Personal Radio" service for Personal, Leisure and Family use. Radios must be equipped with a GPS and built-in control ROM for automatic digital callsign identification. [disputed – discuss] 142.934375–142.984375 MHz, 146. ...
A standard handheld marine VHF, mandatory on larger seagoing vessels under the GMDSS rules A VHF set and a VHF channel 70 DSC set, the DSC on top A vintage (76–89) marine VHF radiotelephone. Marine VHF radio is a worldwide system of two way radio transceivers on ships and watercraft used for bidirectional voice communication from ship-to-ship ...
Estimated Range: 25-30 mi (40–48 km) Dependent on conditions (less in jungle) Power Output: 35 to 40 watts Power Source: Vehicle power or generators Antenna: AT-912/VRC or AS-1729/VRC for mobile use, RC-292 for fixed Type of Service: 30K0F3E (FM) vehicular radio Weight: 100 lb (45 kg) Security