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  2. Family Radio Service - Wikipedia

    en.wikipedia.org/wiki/Family_Radio_Service

    Motorola T5320 FRS handheld radio. The Family Radio Service (FRS) is an improved walkie-talkie radio system authorized in the United States since 1996. This personal radio service uses channelized frequencies around 462 and 467 MHz in the ultra high frequency (UHF) band.

  3. Personal radio service - Wikipedia

    en.wikipedia.org/wiki/Personal_radio_service

    Initially, it used half-watt hand-held FM UHF radios with 14 fixed channels near 462 and 467 MHz. For a time dual-standard FRS and General Mobile Radio Service (GMRS) radios were available, that could be operated without individual licensing on the FRS channels, but which required a license to operate on the GMRS frequencies at a power level ...

  4. Valve RF amplifier - Wikipedia

    en.wikipedia.org/wiki/Valve_RF_amplifier

    A valve RF amplifier (UK and Aus.) or tube amplifier is a device for electrically amplifying the power of an electrical radio frequency signal. Low to medium power valve amplifiers for frequencies below the microwaves were largely replaced by solid state amplifiers during the 1960s and 1970s, initially for receivers and low power stages of ...

  5. Antenna amplifier - Wikipedia

    en.wikipedia.org/wiki/Antenna_amplifier

    In electronics, an antenna amplifier (also: aerial amplifier or booster) is a device that amplifies an antenna signal, usually into an output with the same impedance as the input impedance. Typically 75 ohm for coaxial cable and 300 ohm for twin-lead cable. An antenna amplifier boosts a radio signal considerably for devices that receive radio ...

  6. Ultra high frequency - Wikipedia

    en.wikipedia.org/wiki/Ultra_high_frequency

    The IEEE defines the UHF radar band as frequencies between 300 MHz and 1 GHz. [3] Two other IEEE radar bands overlap the ITU UHF band: the L band between 1 and 2 GHz and the S band between 2 and 4 GHz. UHF television antenna on a residence. This type of antenna, called a Yagi–Uda antenna, is widely used at UHF frequencies.

  7. General Mobile Radio Service - Wikipedia

    en.wikipedia.org/wiki/General_Mobile_Radio_Service

    The General Mobile Radio Service (GMRS) is a land-mobile FM UHF radio service designed for short-range two-way voice communication and authorized under part 95 of the US FCC code. It requires a license in the United States , but some GMRS compatible equipment can be used license-free in Canada .

  8. UHF CB - Wikipedia

    en.wikipedia.org/wiki/UHF_CB

    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.

  9. LPD433 - Wikipedia

    en.wikipedia.org/wiki/LPD433

    LPD433 (low power device 433 MHz) is a UHF band in which license free communication devices are allowed to operate in some regions. The frequencies correspond with the ITU region 1 ISM band of 433.050 MHz to 434.790 MHz.

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