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  2. Inverted vee antenna - Wikipedia

    en.wikipedia.org/wiki/Inverted_vee_antenna

    An inverted vee antenna is a type of antenna similar to a horizontal dipole, but with the two sides bent down towards the ground, typically creating a 120- or 90-degree angle between the dipole legs. It is typically used in areas of limited space as it can significantly reduce the ground foot print of the antenna without significantly impacting ...

  3. G5RV antenna - Wikipedia

    en.wikipedia.org/wiki/G5RV_antenna

    A transmatch (antenna tuner) is not required to use this antenna near its nominal design frequency of 14 MHz, and judicious length adjustments can sometimes include one other frequency band. All other frequencies require a transmatch. [citation needed] There are many variants of the G5RV antenna. Two variations of the G5RV design, called ZS6BKW ...

  4. Beverage antenna - Wikipedia

    en.wikipedia.org/wiki/Beverage_antenna

    The AT&T receiving Beverage antenna (left) and radio receiver (right) at Houlton, Maine, used for transatlantic telephone calls, from a 1920s magazine. The Beverage antenna or "wave antenna" is a long-wire receiving antenna mainly used in the low frequency and medium frequency radio bands, invented by Harold H. Beverage in 1921. [1]

  5. Antenna types - Wikipedia

    en.wikipedia.org/wiki/Antenna_types

    The unusual feedpoint with its adjustable location along the horizontal section gives the inverted 'F' the good feedpoint matching of a unipole, and the compact size of an inverted-L. The antenna is grounded at the base and fed at some intermediate point, and the position of that feed point determines the antenna impedance, so the feedpoint ...

  6. Circularly disposed antenna array - Wikipedia

    en.wikipedia.org/wiki/Circularly_disposed...

    Due to their immense size, the location of the Bondville array and the other post-war antenna arrays are clearly visible in high-resolution aerial photography now available on the internet Also in 1959, a contract to build a larger CDAA — the AN/FLR-9 antenna receiving system — was awarded by the U.S. Air Force to GT&E Sylvania Electronics ...

  7. T2FD antenna - Wikipedia

    en.wikipedia.org/wiki/T2FD_antenna

    Tests done by J.S. Belrose (1994) [7] showed that though the conventional T²FD length is close to a full-size 80 meter (3.5–4.0 MHz) antenna, the antenna starts to suffer serious signal loss both on transmit and receive below 10 MHz (30 m), with the 80 meter band signals −10 dB down (90% power loss) from a reference dipole at 10 MHz.

  8. T-antenna - Wikipedia

    en.wikipedia.org/wiki/T-antenna

    The name comes from its resemblance to an inverted letter "L" (Γ). The T-antenna is an omnidirectional antenna, radiating equal radio power in all azimuthal directions, while the inverted-L is a weakly directional antenna, with maximum radio power radiated in the direction of the top load wire, off the end with the feeder attached.

  9. Monopole antenna - Wikipedia

    en.wikipedia.org/wiki/Monopole_antenna

    The horizontal gain continues to increase up to a maximum of about 6.6 dBi at a length of five-eighths wavelength ⁠ 5 / 8 ⁠ λ so this is a popular length for ground wave antennas and terrestrial communication antennas, for frequencies where a larger antenna size is feasible. The input impedance drops to about 40 Ohms at that length.

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