impedance matching

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.

12 elements Yagi for 70Mhz Priority listing - A Monster Yagi for 70MHz huge gain, clean pattern and flat SWR 50 Ohm, no matching required

11elements yagi for 70MHz Priority listing - Low Noise 4m LFA Yagi. No matching needed, flat SWR across the band. Ideal for field day etc. Serious gain and F/B by G0KSC

10 elements 70MHz Low Noise LFA Priority listing - A 10 element 4M LFA Yagi. Flat SWR across the band, easy build with no matching to install. No power limit high gain.

G0KSC 70 Mhz and 50 Mhz Dualband Yagi - Direct feed, no matching required dual band Yagi

11el 50MHz Low Noise LFA Yagi - 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

8el 50Mhz / 70Mhz Dualband Yagi - Only just over 6 foot long, a compact 8 element dualband Yagi for 6 and 4 meters band. No traps or coils, no matching required. Simple to build by G0KSC

Dual Band Yagi 28Mhz and 50Mhz Priority listing - NO Traps or coils, NO matching required. Direct 50 Ohm feed. Easy to build and nothing else like it! Enjoy 50/28 with one feedline to a dual band high gain Yagi by G0KSC

Stacking phasing and matching yagis - All about stacking and matching yagi antennas.

QRO baluns - Construct your own heavy-duty baluns capable of matching your amp’s output to various antennas.

All About Ham Radio Ladderline - Ladder Line Myths, Line Types, Spacing and Impedance, Length by KV5R

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

Tri-Mode Buffer Amplifier Box - The TMB-1 is an RF amplifier unit / receiving accessory that can be used with a low-impedance broadband loop, a high-impedance terminated loop (such as a Pennant, Flag, or Kaz Delta), and whip (telescoping rod) antennas.

Basics of antennas - The current, the voltage, the impedance, the bandwidth, the polarization, and how the earth influences the famous radiation pattern.

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!

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

MFJ-993B Intellituner Review - MFJ-993B Intellituner automatic antenna matching device review by N4KC

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

Class C Amplifier Matching - QST Article on what you should know about matching networks for class C RF power amplifiers