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  2. Antenna types - Wikipedia

    en.wikipedia.org/wiki/Antenna_types

    Small monopoles ("whips") are used as compact, but low-gain antennas on portable radios in the HF, VHF, and UHF bands. Whip Type of antenna used on mobile and portable radios in the VHF and UHF bands such as FM "boom boxes", consists of a flexible rod, often made of telescoping segments

  3. Very high frequency - Wikipedia

    en.wikipedia.org/wiki/Very_high_frequency

    VHF radio is also used for marine Radio [6] as per its long-distance reachability comparing UHF frequencies. Example allocation of VHFUHF frequencies: [7] Radionavigation 60: 84–86 MHz; Fixed Maritime Mobile: 130–135.7 MHz; Fixed Aeronautical radio navigation: 160–190 MHz; Broadcasting Aeronautical Radionavigation: 255–283.5 MHz

  4. Radio spectrum - Wikipedia

    en.wikipedia.org/wiki/Radio_spectrum

    The lowest frequencies used for radio communication are limited by the increasing size of transmitting antennas required. [6] The size of antenna required to radiate radio power efficiently increases in proportion to wavelength or inversely with frequency. Below about 10 kHz (a wavelength of 30 km), elevated wire antennas kilometers in diameter ...

  5. Pan-American television frequencies - Wikipedia

    en.wikipedia.org/wiki/Pan-American_television...

    The Pan-American television frequencies are different for terrestrial and cable television systems. Terrestrial television channels are divided into two bands: the VHF band which comprises channels 2 through 13 and occupies frequencies between 54 and 216 MHz, and the UHF band, which comprises channels 14 through 36 and occupies frequencies between 470 and 608 MHz.

  6. List of RF connector types - Wikipedia

    en.wikipedia.org/wiki/List_of_RF_connector_types

    Other popular applications include broadband, military and instrumentation. The 2 stud bayonet clamp design allows quick and easy coupling without requiring special tools. UHF connector (e.g., PL-259/SO-239). Some Japanese manufacturers such as Diamond Antennas use an M-type clone which has the measures and thread translated to metric.

  7. 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. [1] 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.

  8. Turnstile antenna - Wikipedia

    en.wikipedia.org/wiki/Turnstile_antenna

    A turnstile antenna, or crossed-dipole antenna, [1] is a radio antenna consisting of a set of two identical dipole antennas mounted at right angles to each other and fed in phase quadrature; the two currents applied to the dipoles are 90° out of phase. [2] [3] The name reflects the notion the antenna looks like a turnstile when mounted ...

  9. Doppler radio direction finding - Wikipedia

    en.wikipedia.org/wiki/Doppler_radio_direction...

    The operator rotated the antenna, looking for points where the signal either reached a maximum or, more commonly, suddenly disappeared or 'nulled'. A common RDF antenna design is the loop antenna, which is simply a loop of wire with a small gap in the circle, typically arranged to rotate around the vertical axis with the gap at the bottom. [3]

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