feedline

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feedline

34 links - and 1 categories

Antennas : 40M : 40 meter Dipole Antennas
  • Linear Loaded 40m Dipole - A simple dipole for 40m band feeded with 450-Ohm openwire feedline includes MMANA Gal files to download
    [ Hits: 484 | Votes: 1 | Rating: 5 ]
  • Linear Loaded 40m Dipole - Dipole for 40m band. It is a simple linear loaded dipole feeded with 450-Ohm openwire feedline. Designed it for resonance at 7.050 MHz, can be tuned on 30m and 80m bands with an external antenna tuner. Build with simple electrical copper wire (2.5 mmq/13 awg) and two fishing poles with size of about 7 m/23 ft.
    [ Hits: 159 | Votes: 0 | Rating: 0 ]
Antennas : 6M : 6 meter J-Pole Antenna
  • The Ugly MacGyver 6 meter J-pole Antenna - 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: 202 | Votes: 0 | Rating: 0 ]
Antennas : 6M : 6 meter Yagi Antennas
  • 2 element Yagi for 50 MHz - This 6 meter 2 element yagi antenna is simple, compact and effective antenna for 50 Mhz. The design antenna was optimized with AO for best match to 50 ohms, no matching network. A choke balun is recommended to decouple feedline currents.
    [ Hits: 532 | Votes: 3 | Rating: 3 ]
Antennas : Bazooka
  • KC0KJF Doble Bazooka - The Double Bazooka Dipole is a very efficient single band antenna which is very quite,and does not require the use of a balun. This antenna consists of coax (RG58) with the shield split at the center and the feedline attached to the open ends.
    [ Hits: 986 | Votes: 2 | Rating: 3 ]
Antennas : Beverage
  • Beverage Receive Antenna - The Beverage we use is a DX Engineering RPS-1 dual directional 360 foot 109,7 m, oriented due North/South, six feet 1,8 m off the ground. The antenna uses 450 ohm ladder line as the antenna, and 75 ohm RG-6u for the feedline. The antenna runs atop the fence between our property and 5 acres of pasture next door.
    [ Hits: 149 | Votes: 4 | Rating: 7.25 ]
Antennas : Dipole
  • QRO No-Tuner Multiband Dipole - Construction details of a multiband dipole that can can operate at high power levels, and match its 50-ohm coax feedline without a tuner
    [ Hits: 1502 | Votes: 2 | Rating: 4.5 ]
Antennas : End-Fed
  • Resonant Feedline Dipole - Experiences with the end-fed dipole based on the concepts presented by J. Taylor in an article titled RFD-1 and RFD-2: Resonant Feed-Line Dipoles in QST. August 1991.
    [ Hits: 733 | Votes: 1 | Rating: 3 ]
Antennas : Loop
  • Quad Loop Antenna for 50 MHz - Building A Full-Wave Quad Loop Antenna for 6 Meters. This is an easy antenna to build and the materials cost about $15-20. It exhibits 1.8dB gain over a 1/2-wave dipole. Using an open-wire parallel feedline (commonly called ladder line) with an antenna tuner, it tunes up on the 10m band as a 5/8-wave loop as well
    [ Hits: 196 | Votes: 1 | Rating: 1 ]
Antennas : Multiband
  • The $4 special antenna - A multiband wire antenna with a twinlead feedline that can be easily tuned in several bands, witha 33 ft per leg you can have a 40 to 10 meters band coverage
    [ Hits: 2259 | Votes: 4 | Rating: 7.25 ]
Antennas : Receiving
  • Chokes and Isolation Transformers for Receiving Antennas  new - Chokes and isolation transformers are essential for receiving antennas to mitigate common mode current, which induces noise and interferes with signal quality. Common mode chokes, formed by winding feedline through ferrite cores, block unwanted current effectively. Proper selection of core material and winding turns ensures resonance near the operating frequency, reducing interference. Isolation transformers further minimize interference, crucial for multi-transmitter stations.
    [ Hits: 52 | Votes: 1 | Rating: 9 ]
Antennas : Towers
  • How I Did My Tower - AD7SR, traces the whole process of erecting a tower from checking on the legal requirements to getting the feedline into the shack.
    [ Hits: 778 | Votes: 0 | Rating: 0 ]
Technical Reference : Coax Cables and Connectors
  • Yes, all my Coax Cables are 75 Ohms - CO2KK exposes some myths about using 75-ohm feedline with 50-ohm rigs and show how to build a cotanget transformer
    [ Hits: 1305 | Votes: 3 | Rating: 8.67 ]
  • Coax Loss Calculator Online by K5VR - RF Feedline (Coax and Ladder-Line) Loss and ERP Calculators made with Javascript. This complex feddline loss calculator has already several line types paramenters for most common coaxial cables from Belden, Time LMR, Wireman and other common products. Result will give Matches loss, SWR loss, dB and Watts power loss.
    [ Hits: 249 | Votes: 2 | Rating: 5 ]

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