short wave

A 30/40 meters band vertical anetnna - A shortened 30/40 meters band vertical antenna in italian

Transmission Line Calculator - This web page allows you to perform transmission line calculations by using an applet instead of a Smith chart

Another Ugly Choke Balun - A home made balun build using a short length of 4 inch drain pipe and 18 foot of RG58 by G4APL

Folding the Dipole - Invented by Heinrich Hertz in around 1886, the half wave dipole is still one of the most simple and practical of antennas and still very much in use today. It consists of a half wavelength long centre fed conductor

Short 40m dipole - The GM4JMU Shortened 7Mhz Dipole

The Galaxy dipole - A very short dipole with a good radiation efficiently plus a respectable bandwidth by S. C. Chuck Smith, WA7RAI

The DBJ-2 portable J-Pole - A Portable VHF-UHF Roll-up J-pole Antennam that resonates on both bands but actually performs as a half wave radiator on both bands

6-Band Windom antenna  ^pop - Theory and construction of a novel trapless center-loaded off-center-fed (cl-ocf) dipole or windom antenna for the 80, 40, 30, 20, 15 and 10m hf amateur radio (ham) bands

Short Whip Antenna Tuner - Here is a circuit that will resonate a short whip antenna for the HF Bands.

The Grid Yagi for 144 Mhz - The Grid Yagi (or Grid Quad) is a high performance yagi antenna that can be built with readily obtainable inexpensive materials. Described here is a 6 element 2 meter version with a boom length of about 1 wavelength, shown

BiQuad Antenna for 144/440 - This is a vertically polarized Broadside and Collinear Array each Loop is a vertically polarized Broadside Array both the right and the left side of the Loop is a bent 1/2 wave dipole working 180 degrees out of phase with the other one and that gives you 4.15dbi of gain by KE4UYP

DCTL Antennas and other compact antennas - The Distributed Capacitance Twisted Loop is an inexpensive, effective, resonant alternative that can fit in a 8' tall by 12' or so wide space, like a wall, or balcony, even on 80 meters. 160 meters from an apartment, a full wave look and a cage dipole

The Balcony Boomer Antenna - This antenna is an experimental combination of a 1/4 wave monopole and yagi style reflector

The Zeppelin antenna - It consists of a radiating wire with a length equal to the half-wave of the fundamental frequency for which the antenna is cut.

British Columbia FM Communications Association - Amateur Radio organization specializing in VHF, UHF, and microwave communications.

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

VE3NAR Nortown Amateur Radio Club - Sponsors of WAVE, WACAN awards

I.P.A. Radio Club - The I.P.A. Radio Club is available to all I.P.A. members, throughout the world, who either hold an Amateur Radio Licence or who are Short Wave Listeners.

TAK-tenna Priority listing - Electrical half-wave dipoles HF antennas

Maxdao Technologies - Maxdao: offer you 7/16, N coaxial connectors, jumper cables, feeder clamps and grouding kits, surge arresters & brackets, wall entries and microwave components used in base tower, power dividers, couplers

RF Circuit design basics - Ebook by Akira Matsuzawa Tokyo Institute of Technology, Building blocks in RF system and basic performances, Device characteristics in RF application , Low noise amplifier design, Mixer design and Oscillator design

AURFSCAN - Australias Radio communications monitoring forum for the Scanner and Shortwave enthusiast

ZS1I beacon keyer - This article describes a simple programmable Morse Code Continuous Wave (CW) beacon keyer for HF, VHF, ARDF and tracking beacons

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

Atlas of Ground Conductivity - The ITU-R World Atlas of Ground Conductivity in PDF