quarter wave

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quarter wave

45 links

Antennas : 160M
  • 160m Kite Vertical Antenna - An essential kite antenna plan for the top band, Antenna has been tested at half wave and quarter wave.
    [ Hits: 96 | Votes: 1 | Rating: 10 ]
Antennas : 2M
  • 2m Quad Turnstile Antenna - The loops are made of 10 mm round aluminum tube. No bending pliers was used to gently bend 90 degrees to obtain a square with 53 cm inner sides. Each loop has an impedance of approximately 100 Ohm. To connect both radiators in phase, a quarter wave long feeder of 100 Ohm is required.
    [ Hits: 157 | Votes: 0 | Rating: 0 ]
Antennas : 30M Antennas : 6M : 6 meter J-Pole Antenna
  • The Ugly MacGyver 6 meter J-pole Antenna  new - Essentially, a J-pole is a 1/2 wave resonant antenna connected to a quarter wave matching stub. The feedline is connected at a point on the matching stub that is at the feedline's characteristic impedance. The result is 3/4 of a wavelength on one side and 1/4 wavelength on the other side.
    [ Hits: 37 | Votes: 0 | Rating: 0 ]
  • J-Pole Antenna for 50 MHz  new - This J-Pole is mounted on a fishing rod. The radiator L1 is an isolated copper-wire with a length of 281,5 cm while the quarter-wave matching sector L2 is made with 450-Ohm-Wireman-cable
    [ Hits: 58 | Votes: 0 | Rating: 0 ]

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