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  2. 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 ...

  3. MFJ Enterprises - Wikipedia

    en.wikipedia.org/wiki/MFJ_Enterprises

    MFJ Enterprises was an American manufacturer specializing in a wide range of products for the amateur radio market. The company focuses on station accessories, including antenna tuners and antenna switching equipment. MFJ was founded in 1972 by Martin F. Jue. As of 2014, the company was recognized as the largest producer of amateur radio ...

  4. Dipole antenna - Wikipedia

    en.wikipedia.org/wiki/Dipole_antenna

    The G5RV antenna is a dipole antenna fed indirectly, through a carefully chosen length of 300 Ω or 450 Ω twin lead, which acts as an impedance matching network to connect (through a balun) to a standard 50 Ω coaxial transmission line. The sloper antenna is a slanted vertical dipole antenna attached to the top of a single tower. The element ...

  5. Wikipedia : WikiProject Amateur radio/Popular pages

    en.wikipedia.org/wiki/Wikipedia:WikiProject...

    Rank Page title Views Daily average Assessment Importance 1 NATO phonetic alphabet: 356,940: 11,898 C: Low: 2 Morse code: 130,602: 4,353 B: High: 3 Amateur radio

  6. Amateur radio call signs - Wikipedia

    en.wikipedia.org/wiki/Amateur_radio_call_signs

    Radio amateur clubs will sometimes request specific callsigns in memoriam of deceased members (silent keys); G5RV is held by a British club in memory of the inventor of the G5RV antenna. Some request callsigns which reflect specific interests or modes of operation (such as VE3QRP for a low-power radio club in Ontario).

  7. Near vertical incidence skywave - Wikipedia

    en.wikipedia.org/wiki/Near_Vertical_Incidence...

    An NVIS antenna configuration is a horizontally polarized (parallel with the surface of the earth) radiating element that is from ⁠ 1 / 20 ⁠ th wavelength to ⁠ 1 / 4 ⁠ wave above the ground. The optimum height of such an antenna is about ⁠ 1 / 4 ⁠ wavelength, and high angle radiation declines only slightly for heights up to about ...

  8. Best cutting-edge health and fitness tech from CES 2025 - AOL

    www.aol.com/news/best-cutting-edge-health...

    Its flexible pressure-sensitive antenna provides over 95% accuracy in monitoring sleep activities, making it especially beneficial for elderly users, medical care settings and families with infants.

  9. File:G5RV Antenna.svg - Wikipedia

    en.wikipedia.org/wiki/File:G5RV_Antenna.svg

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