4:1 matching balun

8 elements Yagi for 70 cm - 70 cms 8-element Yagi Beam, this Yagi antenna should not need a balun as it will resonate under its own merit.

80m mobile antenna - The antenna is made in four sections which consists of a base matching coil, a helical section, a centre loading coil and the top whip section with its capacity hat by G4DCH

Balun Test - How test a Balun quality by W8JI

Sleeve Baluns - Sleeve baluns are normally used at VHF and higher. As a general rule, they are not practical at HF. The balun can be inverted and used as a skirt to form part of the antenna element

Inside view of a Magnetic Loop Balun - Inside view of the RF Systems magnetic longwire Bbalun

Baluns on Log Periodic Antennas - Some antenna manufacturers place baluns at the incorrect location in LPDA arrays, or tell you to route the cable incorrectly. This can cause substantial RFI and all sorts of weird problems like RF into house wiring.

Baluns and acceptable power - Baluns / Ununs design and acceptable power

1:6 Balun for the HF bands - 11 wdg bifilar on Amidon T 200-2 Toroid core

Antenna Components - Current Balun, Coax Sheath Current Choke, Inductor and insulators

Tuner Baluns on Input - There is a common perception that placing a balun on the input of a tuner causes the balun to work better. The thought is the balun operates with a matched impedance and that reduces balun losses. It also is thought that moving the balun improves balance.

Air Cored 1:1 HF BALUN - An air cored 1:1 balun for 3.5 to 30.0 MHz

Balun for HF wire dipoles - a neat 1:1 50 ohm balun for use on HF horizontal wire dipoles.

1 to 1 Current Balun - A 1:1 current balun by N5ESE

The Dual-Ferrite-Bead 4:1 HF Balun - A pdf document about the dual ferrite bead 4:1 balun, some preliminary measurements

A 4:1 Air-wound Balun - 40mm diameter grey PVC pipe with a length of 9.5cm

1:4 Current Balun - This project is intended to aid in tuning a balanced antenna or feedline that has a high impedance 100-600 ohms by N5ESE

BALUN 4:1 by IQ9BH - A detailed homebrewing project of a 4 to 1 balun in italian

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

Sloping Vee 470 - Article describes the design and simulation of a multiband Sloping Vee antenna for the HF band, using the software MMANA-GAL. Design with 470 ohms resistive loads. The antenna requires a 4:1 balun.

EI5GLB - ham radio site interesting links and news related also cb radio links and homebrew antennas .baluns,

Ulvin International - Spanish manufacturer of the Tremendus HF power amplifier from 1 to 12 KW PEP, and 5 KW baluns along to Wattmeters and antenna commuters to 5 KW

Hy Power Antenna Company - Off center antennas, Baluns, line isolators, delta loop antennas and dipoles by Hy Power Antenna Company PA USA

Conception R.B. - Specialized in the design and manufacture of radio HF-SSB ground and air at the leading edge of technology. HF,VHF,HF radio,antenna baluns,antennas and, Radio hf ssb.

Ham4Less - supply a full line of the highest quality amateur radio equipment availalble. Antennas, coax cables and switches, baluns, power poles

Anatomy of a Loudspeaker - There are a number of important technical issues relating to the matching of speakers to amplifiers, and to the wiring of multiple speaker systems