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2. Land mobile radio system - Wikipedia

   en.wikipedia.org/wiki/Land_mobile_radio_system

   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.

3. Cell site - Wikipedia

   en.wikipedia.org/wiki/Cell_site

   Cellular lattice tower A cell tower in Peristeri, Greece. A cell site, cell phone tower, cell base tower, or cellular base station is a cellular-enabled mobile device site where antennas and electronic communications equipment are placed (typically on a radio mast, tower, or other raised structure) to create a cell, or adjacent cells, in a cellular network.

4. Mobile cell sites - Wikipedia

   en.wikipedia.org/wiki/Mobile_cell_sites

   RDUs are mobile radio base stations transportable on trucks. Their use is strategic for the rapid expansion of cellular networks. A rapid deployment flanged pole is a mobile radio base station infrastructure transportable on a truck allowing fast and easy installation in restricted spaces. The antenna supporting pole, with a climbing ladder up to the summit, is fixed to the main base frame and i

5. Mobile radio - Wikipedia

   en.wikipedia.org/wiki/Mobile_radio

   Early mobile radios used amplitude modulation (AM) to convey intelligence through the communications channel. In time, problems with sources of electrical noise showed that frequency modulation (FM) was superior for its ability to cope with vehicle ignition and power line noise. The frequency range used by most early radio systems, 25–50 MHz ...

6. Satellite truck - Wikipedia

   en.wikipedia.org/wiki/Satellite_truck

   Some larger satellite trucks weigh over 26,001 pounds (11,794 kg), and therefore require the driver to obtain a Commercial Driver's License (CDL). Satellite trucks over 10,000 pounds (4,536 kg) GVWR are required to stop at weigh stations, undergo annual DOT inspections, and the Truck driver (usually also operates the truck) needs to pass a physical examination mandated by the DOT, maintain an ...

7. AOL Mail

   mail.aol.com

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