matching transformer

T antenna with matching network for 160 m - 160m T Antenna broadcast design by Guglielmo Marconi has been built and is used by Jim NN4AA on 160m. Article by G7LRR

An antenna for 7MHz local contacts - This article describes the design of an antenna for local contacts on 7MHz, including a simple and efficient matching system that presents a 50 ohm load to the transceiver.

Balun Construction - Construction and use of broadband transformers

RF Balun Transformers - This application note is designed to help the reader understand how balun transformers can be used in today’s RF/Microwave communication applications.

Balun construction - problems with iron cores - Lots of information and measurements relating to HF baluns and transformers constructed using Iron Powder cores

Baluns and Transformers - Notes on homebrewing baluns and transformers by G8JNJ

Beverage transformer notes - Notes on beverage transformers collected by N1EU

Beverage and transformers - Why Beverages need good transformers by VK3APN

End Fed Half Wave Antennas - An interesting article on end fed half wave antennas

L Match ATU for QRP - The L match is designed for the matching of random and long wires and should not be mounted in a metallic box/case, i used a small plastic food container which was the most expensive part of the project.

Antenna Feeders - Different types of feeders, SWR and matching

Balanced Self Matching Feed Line System - KE4UYP designed this Balanced Self Matching Feed Line System for people who want the very best feed line they can have on a Monobanded antenna

The Coaxial Line - Impedance matching, Transmission Lines, Characteristic Impedance, VSWR & Mismatch and Antenna Losses

From Transmitter to Antenna - A collection of articles on the subject of impedance, impedance matching and high-frequency power transmission by G3YNH

Receive 4 square antenna - N6RK receive 4 square antenna with transformer coupled antennas and true hibrid combiner

Matching Waves, VSWR at work - When the radiation resistance (voltage to current ratio) of an antenna is the same value as the characteristic impedance of the transmission line (voltage to current ratio in the line), all of the electrical energy transmitted down the line is taken by the antenna and radiated into space in the form of a radio wave.

The Clemens Match - About the clemens match for beam antenna, as an alternative to common gamma matching techniques

10 m Aerial Matching Unit - This simple matching unit will allow a 10 meters aerial to be used right across the 10m band without the need to physically adjust the elements, and offers a virtual 1:1 VSWR at 50 ohms impedance to the transmitter.

A Portable Antenna Matching Unit - A small HF antenna tuner project for qrp operations. Includes circuit diagrams pictures and test results by GW4ALG

The ElectraSlide Antenna - Modification of the DK3 design by Don Johnson, W6AAQ. No voltage dropping, operates on the full 12 volts. The control switch and the matching toroid are supplied. All you need is a standard 3/8 by 24 thread ballmount, 2 wire sheilded microphone cable for control wiring, and a CB whip cut to resonance.

Filtronetics Inc - Maker of filters, oscillators, cristals Coils, Toroidal Inductions, Solenoids, Bifilar wound Solenoids, Trifilar Solenoids and Transformers Located in Kansas City, Missouri

Electronix Express - Online shop for all electronics needs. Cables, Buzzers all kind of electronic components capacitors, inductors, relays, resistors crystals transformers, hardware like knobs screws nuts and washers, opto electronics, diodes and transistors, soldering desoldering products, test equipmemt and tools

Altana Tubes - Brazilian vacuum tube, capacitors, transformers, plugs and connectors, resistances dealer

Altronics - Electronic shop form australia, test equipment, components, switches connectors power supplies transformers, electroni kits and cables

Safe,effective grounding - Practical applications for end-fed antenna transformers and safe, effective grounding