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  2. Antenna rotator - Wikipedia

    en.wikipedia.org/wiki/Antenna_rotator

    An open hardware AzEl rotator system is provided by the SatNOGS Groundstation project. The Alliance Manufacturing Co. of Alliance, Ohio, and the Astatic Corporation of Conneaut, Ohio, manufactured popular radio and TV booster and rotary antenna systems. These products were heavily advertised for radio use in newspapers starting in the early ...

  3. Moxon antenna - Wikipedia

    en.wikipedia.org/wiki/Moxon_antenna

    Moxon antenna for the 20-meter band.The antenna is the faint rectangle of wires held in tension by the bent X-shaped support frame. Moxon antenna for the 2-meter band. The Moxon antenna or Moxon rectangle is a simple and mechanically rugged two-element parasitic array, single-frequency antenna. [1]

  4. Channel Master - Wikipedia

    en.wikipedia.org/wiki/Channel_Master

    Later products included antenna rotors, amplified antennas and pocket transistor radios, and rebuilt cathode-ray tubes. [ 18 ] After the sale to Avnet, the Channel Master name was used to import and distribute various electronic products, including home and car stereo equipment, turntables, cassette decks, 8-track players, quadraphonic audio ...

  5. Altazimuth mount - Wikipedia

    en.wikipedia.org/wiki/Altazimuth_mount

    An altazimuth mount or alt-azimuth mount is a simple two-axis mount for supporting and rotating an instrument about two perpendicular axes – one vertical and the other horizontal. Rotation about the vertical axis varies the azimuth (compass bearing) of the pointing direction of the instrument.

  6. List of amateur radio software - Wikipedia

    en.wikipedia.org/wiki/List_of_amateur_radio_software

    Ham radio repeater finder RFINDER: Proprietary: ios, Android: Ham radio repeater finder CWGet: Proprietary: Windows, Windows Mobile: Morse code decoding MMSSTV: LGPL: Windows: Slow-scan television encoding and decoding QSSTV: GPL: Linux (maybe others) Slow-scan television encoding and decoding Orbitron: Satellite tracking and rotor control

  7. Automatic direction finder - Wikipedia

    en.wikipedia.org/wiki/Radio_Magnetic_Indicator

    An automatic direction finder (ADF) is a marine or aircraft radio-navigation instrument that automatically and continuously displays the relative bearing from the ship or aircraft to a suitable radio station. [3] [4] ADF receivers are normally tuned to aviation or marine NDBs (Non-Directional Beacon) operating in the LW band between 190 – 535 ...