air wound balun

Coil Designer - Mk 2 - This page lets you do calculations for single layer air cored coils using the solenoid formula

Magnetic longwire baluns 1:9 - This Magnetic Longwire Balun (MLB) makes it possible to efficiently use a coaxial lead-in cable with all forms of longwires, T-forms or other types of wire antennas, without the need for an antenna tuner.

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

Basic Balun Theory - Baluns are still a mystery to some radio amateurs and the only way to understand them is to learn what they are and how to use them.

Antenna Baluns - ON9CVD antenna baluns general informations.

Wire Baluns - Baluns done with coaxial feed-cable

Core Baluns - About core baluns, measurementes, basic theory and calculations

The Coax Balun - Building balus with coax cables

Coiled Choke Balun for HF - A very practical Balun for HF aerial work is the choke type. It reduces RFI to and from the feeder & at next to no cost or loss.

Creating a simple, easy to make balun Priority listing - Detailed information on several different balun types which are easy to build at home by G0KSC

4:1 Dual ferrite bead balun - The Dual-Ferrite-Bead 4:1 HF Balun, some preliminary measurements

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"

PVC Yagi antennas - techniques - Collection of different techniques to homebrew PVC yagi antennas, including elements assembling, baluns and chokes, radiator box tips and tricks by dk7zb

Winding an Effective 1:1 Coax Balun - Guidelines to wound a balun by WA2SRQ

Antenna maintenance by PA0FRI - PA0FRI article on maintenance or a FRITZEL antenna by cleaning and restoring antenna traps, baluns and elements

Cushcraft Trap - Coaxial Capacitor Repair - Repairing coaxial capacitor on cushcraft trap. Parts are no longer available from the manufacturer, home repair is the only option.

TACLog - Tac Log is a free input format log book for VHF/UHF/SHF contests. Where most other programs dictate the order and format of the input data during contesting, TACLog gives you freedom of operation, both on the air and on your computer. EDI format and Region 1 rules compliant.

Military Portable Auxiliary Power Units - Design, build and supply Military Diesel Operated Tactical generator sets, diesel generator sets, custom generators, auxiliary power units, portable power generators and tactical quiet generators used by the U.S. Navy and Air Force.

ASC Signal - Global manufacturer of Satellite Earth Station, Air Traffic Control Radar Antenna and High Frequency Antenna products for broadcast, government and enterprise satellite communication applications.

Communication Coil - Communication Coil, Inc. designs and produces custom, high reliability Filter Networks, RF Coils, Chokes, Inductors, Baluns, Toroids and Power Magnetics for communications

A Two-Way Morse Practice Set - The system consists of a pair of Morse practice oscillators connected by a piece of two-conductor cable. Pressing the key on one unit produces a sound in both units by Peter Parker VK3YE -

QRP 1:1 Current-type Balun for Portable Use - A ferrite-loaded coaxial RF choke which just happens to yield the same result as a 1:1 current balun

Icom IC-9100 at HamFair 2009 - Firsts pictures of Icom IC-9100 taken at Tokyo HamFair 2009

AirNav RadarBox LIVE - AirNav live. See live images from my AirNav Radar box here in Clacton on Sea, Essex. Also full setup details.

Smiley Antennas - Ham radio VHF UHF antennas, aircraft, scanners, marine vhf antennas