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  • UHF (Ultra High Frequency)

    UHF is an acronym for a band of radio frequencies often used to broadcast television signals. Mobile phones and satellite radio also use UHF signals. The letters ‘UHF’ stand for: Ultra High Frequency.

    UHF Frequencies

    Any radio frequency between 300 MegaHertz (MHz) and 3,000 MHz (or 3 GigaHertz) is considered to be in the UHF signal range. This range is less commonly known as the decimeter range.

    Frequencies immediately below 300 MHz are part of the VHF range. Radio frequencies above 3,000 MHz are categorized into the Super High Frequency and Extreme High Frequency ranges and together these two are considered the Microwave frequency range.

    Uses of UHF

    UHF spectrum is used for an enormous variety of purposes, including: mobile phones (PCS etc.), television broadcasters, GPS satellites and devices, satellite radio (XM and Sirius), cordless phones, wireless networking, ham radio operators, Bluetooth devices and some RFID chips.

    Frequency Range Uses
    300 – 420 MHz Meteorology and federal two-way use
    420 – 450 MHz Government radiolocation and 70cm ham radio band
    450 – 470 MHz UHF Business Band, GMRS, FRS, public safety
    470 – 512 MHz TV channels 14-20
    512 – 698 MHz TV channels 21-51, channel 34 is sometimes used for radar, channel 37 is used for radio astronomy
    698 – 806 MHz Previously used for TV channels 52-69
    806 – 824 MHz Pagers, previously used for TV channels 70-72
    824 – 849 MHz Terminal (mobile phone), previously used for AMPS, previously used for TV channels 73-77
    849 – 869 MHz Public safety 2-way (fire, police, ambulance), previously used for TV channels 77-80
    869 – 894 MHz Base station, previously used for AMPS, previously used for TV channels 80-83
    902 – 928 MHz ISM band, cordless phones and stereo, RFID, datalinks, 33cm ham radio band
    928 – 960 MHz Mixed studio-transmitter links, mobile 2-way, paging
    1240 -1300 MHz 23cm ham radio band
    1850 – 1910 MHz PCS
    1920 – 1930 MHz DECT cordless telephones
    1930 – 1990 MHz PCS
    2300 – 2310 MHz 13cm ham radio band – lower segment
    2310 – 2360 MHz Satellite radio (Sirius and XM)
    2390 – 2450 MHz 13cm ham radio band – upper segment
    2400 – 2483.5 MHz ISM, IEEE 802.11, 802.11b, 802.11g Wireless LAN, IEEE 802.15.4

    Microwave ovens cause interference around 2450 MHz in the UHF band.

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    One comment
    1. Curt Maxwell

      21 August, 2018 at 5:59 pm

      I am looking for a system to radiate the body with 434 MHz UHF.
      The only picture I have seen of the system I want appears to be about 2 ft above the person laying down. After about 20 minutes the person is flushed and warm and needs a drink of water.
      Any clues as to what I need?
      Thanks, Curt Maxwell. M. D.

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