Choke

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

Winding style of toroid chokes and baluns - Dispels myth about choke balun winding method

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

Choke balun  ^pop - 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

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.

About Common Mode Choke - A general article on CMC, common mode choke include a description and tipical usage.

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

Choke Balun Designs - In this designs G8ODE explains different methods to builds a choke balun

Choke coax length - Discussion about choke length

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

Coiled Coax Choke Balun - A very practical Balun for aerial work is the choke type

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.

Common mode chokes - Excellent article on limiting noise using chockes by Chuck Counselman, W1HIS

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

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

Homebew RF chocke - RF Choke to prevent hf currents on the feedline

Noise Reduction on 40m Priority listing - DF9CY implementation of W1HIS suggestion of inserting a common mode choke into a 40m antennas feed-line.

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"

The Ugly Balun - A 1:1 choke balun for 160 thru 10 meters using one continuos lenght of coax to rig.

Wind your own RF Choke - Learn How - Winding your own RF Choke, Inductor Winding instructions

Winding style of toroid chokes and baluns - Dispels myth about choke balun winding method