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Petlowany Antennas by K6NO - WorldRadio Article on Petlowany antennas base on this principle: if a length of wire is wound into a spiral-shaped coil and excited by a radio frequency current connected to the innermost portion of the coil, it will then, and only then, exhibit RF characteristics that closely approximate those of a resonant linear wire of the same length

Coil calculator - On-line single-layer coil designer

Coax Dipole Calculator - An efficient program to calculate dimensions of coax dipoles, or bazooka antennas considering velocity length of different coax cables. Express dimensions in feet/inch and meters/cm. Freeware by VE3SQB

Antenna Loading Coil Construction Techniques - This page explains how to construct high-Q inductor coils.

Build Your Own Coils - A method of building coils for your home made antennas

Home Brew Loading Coil for AD5X Vertical - How to make a loading coil for the AD5X portable vertical antenna

Building Coils - Building coils for a portable dipole using a novel method of winding coils with weedeater cord! By K4MMG

Dualband EH Antenna - A detailed project of a dual band EH antenna by F5IXU in french

W3HH Multiband antenna - A french pdf file that explain how to build a T2FD antenna in all its parts including balun

The NK7U Contest Station - Multi-op contest station of Joe Rudi, NK7U of Baker City, Oregon, USA

BU2AO - BU2AI and BU2AO Taipei City, Taiwan

VE6NQ Calgary Amateur Radio Association - CARA is dedicated to furthering the hobby of amateur radio in and around the city of Calgary, Alberta, Canada.

White Rock Amateur Radio Club - The Radio Club was formed at the request of long term resident and mayor, Hardy Staub, VE7IDY, to provide the city with an Amateur radio communication resource, should the need arise.

Vector - VECTOR is the acronym chosen for the City of Vancouver’s Amateur Radio program. VECTOR includes both licensed Amateur Radio operators and other communications volunteers involved in the city emergency program

VE9LC The Loyalist City Amateur Radio Club Incorporated - Loyalist city amateur radio club, inc.

VE1YO Dartmouth Amateur Radio Club - The Dartmouth Amateur Radio Club is located in the City of Dartmouth, Nova Scotia which is on the Eastern side of Halifax Harbour. The Club was founded in 1953

Festival City Amateur Radio Club

VE3WHT BCRC - The Border City Radio Club Windsor Ontario Canada

KB0TUC The Royal Gorge Amateur Radio Club - A General-Interest ARRL Affiliate Operating Open Repeaters in Canon City, Colorado

Derby City Radioactives - We are an organization of hobbyists and enthusiasts involved in multipule aspects of radio communications and public service including CB and Ham radio.

N3EC Ellwood City Amateur Radio Assoc.

Pierce Aluminum - Distributor of aluminum and a manufacturer of finished aluminum products. Pierce Aluminum offers a diverse inventory and distributes a complete line of sheets, coils, plates, bars, structural shapes, tubes, pipes and extrusions in the most varied alloys and sizes possible

MeterTest Ltd - Producer of meter test equipment for electricity meters testing and calibration

Kollman Radio - Kollman Radio- Kansas City's Amateur Radio ,CB Radio, Scanner, Satellite TV|DirecTV & more store

Accurate Inductance Calculator - This page allows you to calculate in the most accurate way high-Q inductor coils.