Choke

RF Chokes

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    • A model of the W2DU 1:1 choke balun - Notes on making the W2DU choke balun by placing several ferrite sleeves around a coaxial cable.
      [ Hits: 8645 | Votes: 6 | Rating: 2.50 ]
    • About Common Mode Choke - A general article on CMC, common mode choke include a description and tipical usage.
      [ Hits: 680 | Votes: 0 | Rating: 0.00 ]
    • Another Ugly Choke Balun - A home made balun build using a short length of 4 inch drain pipe and 18 foot of RG58 by G4APL
      [ Hits: 7601 | Votes: 3 | Rating: 2.33 ]
    • Chocking the End-Fed Antenna - Stop common-mode current when transmitting with an end-fed antenna. Unbalanced antennas are very prone to currents on the outside of the coax.
      [ Hits: 308 | Votes: 0 | Rating: 0.00 ]
    • Choke balun - Essentially, a choke balun is designed to 'divorce' your antenna from the feed line. if your feed line is coaxial cable then you don't want it to be part of your antenna. you want to be able to deliver all your power to the radiator itself, i.e. 'the antenna'. a choke balun does this admirably
      [ Hits: 311 | Votes: 11 | Rating: 7.27 ]
    • Choke Balun Designs - In this designs G8ODE explains different methods to builds a choke balun
      [ Hits: 2493 | Votes: 5 | Rating: 4.60 ]
    • Choke coax length - Discussion about choke length
      [ Hits: 2291 | Votes: 2 | Rating: 5.50 ]
    • Chokes Explained - A "choke" is the common name given to an inductor that is used as a power supply filter element. They are typically gapped iron core units, similar in appearance to a small transformer, but with only two leads exiting the housing
      [ Hits: 966 | Votes: 1 | Rating: 1.00 ]
    • Coiled Coax Choke Balun - A very practical Balun for aerial work is the choke type
      [ Hits: 1038 | Votes: 1 | Rating: 5.00 ]
    • Common Mode Choke Theory - A common mode choke may be used to reduce a type of electrical noise known as common mode noise. Electro-magnetic interference (E.M.I.) in the circuit's environment is one source of electrical noise.
      [ Hits: 1576 | Votes: 4 | Rating: 1.00 ]
    • Common mode chokes - Excellent article on limiting noise using chockes by Chuck Counselman, W1HIS
      [ Hits: 4077 | Votes: 11 | Rating: 5.18 ]
    • Common-mode chokes - Chart that present results of impedance measurements made on a variety of common-mode choke implementations across the frequency range 1MHz to 30MHz by G3TXQ
      [ Hits: 322 | Votes: 0 | Rating: 0.00 ]
    • Eliminating TX RF Feedback Problems - Malfunction of transceivers due to stray RF pickup is a common problem, especially when using end-fed antennas, high-impedance feedlines, or a poor ground counterpoise
      [ Hits: 1773 | Votes: 1 | Rating: 1.00 ]
    • Feeder Radiation - Connecting centre fed antennas, dipoles, yagis, rhombics, loops to coaxial cable, unless care is taken, it is not difficult to end up with feeder radiation resulting in power loss and the radiation characteristics changes
      [ Hits: 1641 | Votes: 1 | Rating: 1.00 ]
    • Homebew RF chocke - RF Choke to prevent hf currents on the feedline
      [ Hits: 2994 | Votes: 2 | Rating: 10.00 ]
    • How Common Mode Chokes Work - Examine the function and operation of a common mode choke and the way it reduces unwanted interference. Common Mode Choke vs. Single Choke
      [ Hits: 297 | Votes: 0 | Rating: 0.00 ]
    • Isolation chokes for 160m verticals - An article on how much impedance you really need and how small can be a chooke for top band vertical antennas by N6LF
      [ Hits: 308 | Votes: 0 | Rating: 0.00 ]
    • Noise Reduction on 40m - DF9CY implementation of W1HIS suggestion of inserting a common mode choke into a 40m antennas feed-line.
      [ Hits: 1171 | Votes: 0 | Rating: 0.00 ]
    • RF Chockes - A chart presenting the results of impedance measurements made on a variety of common-mode choke implementations across the frequency range 1MHz to 30MHz by G3TXQ
      [ Hits: 310 | Votes: 1 | Rating: 5.00 ]
    • RF choke or 1:1 balun - RF Choke to prevent hf currents on the feedline or...1:1 Choke Balun, sometimes called the "UGLY BALUN"
      [ Hits: 2883 | Votes: 5 | Rating: 2.60 ]
    • The Ugly Balun - A 1:1 choke balun for 160 thru 10 meters using one continuos lenght of coax to rig.
      [ Hits: 5548 | Votes: 7 | Rating: 7.00 ]
    • Trap on Coax Cable - A trap on the coaxial cable, also known as choke, helps to eliminate the sneaking of the reflected RF- energy to the shack. The trap can be made from the coaxial cable that feeds the antenna
      [ Hits: 441 | Votes: 0 | Rating: 0.00 ]
    • Unwanted RF in the shack - How to make your own CMC Common Mode Current choke and where to place in your antenna feed-line.
      [ Hits: 348 | Votes: 1 | Rating: 10.00 ]
    • Wind your own RF Choke - Learn How - Winding your own RF Choke, Inductor Winding instructions
      [ Hits: 1029 | Votes: 4 | Rating: 8.75 ]
    • Winding style of toroid chokes and baluns - Dispels myth about choke balun winding method
      [ Hits: 9104 | Votes: 14 | Rating: 6.78 ]

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