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Business band. In the United States, the business band is the colloquial name used by radio users who utilize and scanner hobbyists who listen to the Federal Communications Commission (FCC) Industrial/Business pool frequencies. The regulations listing frequencies in this pool are contained in Subpart C of Part 90, Title 47 of the CFR .
Business Band Two-Way Radio Narrowbanding refers to an FCC Order issued in December of 2004 requiring all CFR 47 Part 90 VHF (150-174 MHz) and UHF (421-512 MHz) PLMR (Private Land Mobile Radio) licensees operating legacy wideband (25 KHz bandwidth) voice or data/SCADA systems to migrate to narrowband (12.5 KHz bandwidth or equivalent) systems ...
Citizens band radio (CB radio) is a land mobile radio system, a system allowing short-distance one-to-many bidirectional voice communication among individuals, using two-way radios operating near 27 MHz (or the 11-m wavelength) in the high frequency or shortwave band.
CES 2010, Las Vegas, January 5, 2010 – PURE (South Hall 2, Booth #36604), the global leader in digital and internet-connected radios has entered the US market with a product family that defines ...
The antenna is the faint rectangle of wires held in tension by the bent X-shaped support frame. Moxon antenna for the 2-meter band. The Moxon antenna or Moxon rectangle is a simple and mechanically rugged two-element parasitic array, single-frequency antenna. [ 1] It takes its name from the amateur radio operator and antenna handbook author Les ...
The company is at least stepping forward and confirming that the new model's two most commonly reported problems do indeed exist -- but isn't going so far as to fix them just yet. The first issue ...
The radio spectrum is the part of the electromagnetic spectrum with frequencies from 3 Hz to 3,000 GHz (3 THz ). Electromagnetic waves in this frequency range, called radio waves, are widely used in modern technology, particularly in telecommunication. To prevent interference between different users, the generation and transmission of radio ...
DSB-SC is basically an amplitude modulation wave without the carrier, therefore reducing power waste, giving it a 50% efficiency. This is an increase compared to normal AM transmission (DSB) that has a maximum efficiency of 33.333%, since 2/3 of the power is in the carrier which conveys no useful information and both sidebands containing identical copies of the same information.