air core baluns

The 80M elevated wire vertical array - This 80M antenna is a pair of raised 1/4-wave verticals

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

Yagi-16DBI for 2.4 GHz - Wifi yagi antenna with 16 Dbi (in French)

Linear Focus Parabolic Wifi Antenna - This antenna can be made in a couple of hours and involves a fair amount of measuring, cutting, bending, and bolting metal.

Castles On The Air – Russia - COTA-RUSSIA Award

Ukrainian Lighthouses on the Air - Ukrainian Lighthouses Award official web-site

DaveMade.Mobi Priority listing - DaveMade Accessories, Sales,Service,Repairs

Tecom - Tecom industries product line encompasses a wide range of highly sensitive active and passive antennas for use in airborne and ground applications, providing complete coverage of the 20 MHz to 40 GHz frequency range.

RDF Antennas - This site serves a community of volunteer and paid professionals in Search & Rescue and Civil Air Patrol who save lives and Amateur Radio enthusiasts who use DF skills as a hobby. We provide antennas and other resources for people in these fields.

VHF Sniffer MK4 - Two-meter and aircraft band receiver specifically designed for RDF on foot, sold by Bryan Ackerly VK3YNG

Airmobile with APRS - VHF Aircraft APRS aeronautical mobile Amateur Ham Radio info by K0RNS

Balloon Lift with Lighter than Air Gases - balloon buoyancy, balloon materials, and antenna construction materials.

Balloon or kite antenna? Why not - Balloon antennas, mainly about using 2 balloons instead of one for a vertical antenna.

HamRadio Magazine - amateur rado magazine

FT9000 - ModsAndRepairs Forum at eHam.net - eHam discussion about FT-9000 modifications

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.

Military Air Scanners - Military Air scanning and receivers. Choosing the best one

Yaesu VX-7R hints and tips - Yaesu VX-7 Microphone Audio, Yaesu VX-7 Speaker Repair and the MH-209SMA antenna

Train's Towers - Maintenance of Antenna Tower Systems, Antenna tower foundation analysis and repair, Tower troubleshooting and repairing

Atlantic Tower Services - Atlantic Tower offer site maintenance, repair, modification, upgrade and installation services based in Orlando FL

Scott Tower Services - Tower erection service, modifications, replacement, repairing service

Mid America Tower Service - Specialized in antenna tower erection, inspections, maintenance, excavating, planning, repair and site mapping.

Abra Electronics - ABRA Electronics is a trusted partner of thousands of OEMs, schools, hobbyists, repair shops and Government Organizations. We stock everything from electronic components to test instruments to educational kits.

Vetex - Radio Repair - Based in Virginia USA, offer repearing services for amateur radio equipment and related accessories

Ferrite for RFI - Ferrite cores for RFI Suppression