4:1 matching balun

6el 70MHz Low Noise LFA Yagi - A Super 6 element LFA Yagi for 4M. 5.15 mtrs long and 12.4 dBi. Awesome antenna with no matching required and flat SWR throughout. Easy build

5 elements LFA Yagi for 70MHz - A compact 5 element LFA Yagi for 4M. easy build no matching needed as this is 50 Ohm and flat SWR. Excellent performance.

11el 50MHz Low Noise LFA Yagi  ^updated - A Large 11 element LFA Yagi for self build. Easy construction as no matching is required. Super gain, F/B and flat SWR

10el 50MHz Low Noise LFA Yagi - A high gain LFA 10 element LFA Yagi with super clean pattern and flat SWR no matching required so easy to build.

9el 50MHz Low Noise LFA Yagi - A 9 element 6M LFA Yagi with no matching required. Super flat SWR, great pattern and gain too. What more do you need?

5 element LFA Yagi for 50MHz - A compact 5el Yagi with good performance and completely flat SWR. No matching required either, easy build by g0ksc

A balun tutorial design - A balun tutorial discussing a number of aspects of the design and construction of baluns for the amateur radio design of your next electronic project.

Simple 75 ohm Coax Balun - A simple current balun for the FM broadcast band

Baluns: What they do and how they do it - Article on Baluns and how they works, by W7EL

Errante's virtual ground balun - Errante's virtual ground Balun, a state-of-the-art high power HF balun family.

How to Make a Great 9:1 RX Transformer - There are lots of good designs for matching transformers for receiving antennas. Make it yourself it's cheap and easy, and very high performance. This is the design used in the TRX-9 transformers.

A 9:1 Balun - How to DIY a 9:1 balun in french

Switchable Balun - A 1:1 to 4:1 switchable balun by N1LO

N5ESE's 1:1 Current Balun - classic 1:1 current balun

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

Home-brew Antennas - Notes on homebrewing antennas by Chris G4CYA, from gamma matching, to phasing antennas, splitters and combiners, baluns and measuring techniques.

Single-stub matching - Single-stub matching of transmission lines to loads A worked example

Yagi matching - A description of the concepts of Yagi matching - T match and general impedance matching by K2RIW

EME stackable 9el 144MHz LFA Yagi - High Gain Low Noise 9el 144MHZ LFA Yagi. Flat SWR and no matching required. Very low temperature see lowest Ta on VE7BQH list ofr this size!

Antenne verticale HF. - A vertical antenna project than can present low swr from 40 to 10 meters by using a balun in french

MFJ Enterprises  ^pop - MFJ manufacturer of ham radio antenna products, antenna tuners, antenna analyzers, morse code & CW, SWR wattmeters, antenna accessories , power supplies, audio filters, TVI filters, baluns, coax switches and more

EME Low Noise 14 elements Yagi - Ideal for EME with a Sky Temperature never seen at this boom length. Amazing pattern and flat SWR. 50 Ohm with no matching required.

Using MT65 - MAP65, a panoramic, polarization-matching receiver for JT65 by K1JT

Chushcraft A3S - Simple Balun Support - A method for supporting a balun on a Chushcraft A3S antenna. This allows the balun to be isolated from the boom, thus reducing the effect of introduction of reaction with the balun core.

MAP65 - MAP65 works together with the Linrad software. The Linrad/MAP65 combination implements a wideband, polarization-matching receiver for the JT65B protocol.