antennas

RF in shack with vertical and longwire antennas - Why a vertical antenna or longwire antenna might require a balun

Antenna Transmatch Tips - Tips on tuning antennas using Antenna Tuning Units also called ATU. This article explains the functions and ills of tuners, along with some guide- lines for building an ATU.

Choke balun  ^pop - Essentially, a choke balun is designed to 'divorce' your antenna from the feed line. if your feed line is coaxial cable then you don't want it to be part of your antenna. you want to be able to deliver all your power to the radiator itself, i.e. 'the antenna'. a choke balun does this admirably

A Horn Antenna for 2.4 GHz. - This Antenna is not really practical for AO-40 reception, but horn antennas have a number of qualities useful in microwave antenna testing and noise figure measurements.

Design your Own Super J Pole - a Javascript for calculating the lengths of tubing to be used for the construction of a Super J-Pole.

ARRLWeb: Loop Antenna - Loop antennas articles with restricted access to arrl members

Loading inductors in mobile antennas - Mobile antennas, loading coil current, and loaded antennas. efficiency and electrical rules. Loading inductors used in mobile HF antennas.

Portable HF antennas - Excel sheet containing technical comparisons of commercial HF portable antennas compiled by ON4SKY. Includes pictures, manufacturer, db gain, band coverage, F/B ratio, price, weight and dimensions.

Trap antennas, coaxial trap, coax dipole antenna loss resistance - Testing and comparison of traps and trap antennas

802.11b Homebrew WiFi Antenna Shootout  ^pop - Guide to homebrew your wifi antenna, using a tin can, in this cases using a pringles can. This antennas are also known as cantenna and let you spread your wifi signal.

Wifi Antenna Tests - Comparison Test of Marska wlan-antennas

Slotted Waveguide 802.11b WLAN antennas - 802.11b WLAN Waveguide Antennas Unidirectional & Omnidirectional. High gain, Simple construction by Trevor Marshall

Building Helical Antennas - Seattle Wireless - Photos and comments on building an helical antenna for wifi

WK8L's ATV Page - Includes links and documentation on wifi antennas, 2.4 GHz Coffee Can Feed Antennas

Cebik antennas and limited space dipoles - An analysis of the cebik dipole and other small limited space dipoles fed with open wire ladder line.

JA0JBA EH Anntenas - A blog dedicated to EH antennas and other antenna modelling in general

Bozak Antennas - VHF, UHF, FM, Base & Mobile antennas

WA3WSJ antennas - Field amateur radio equipment. Small, lightweight and stealthy antennas. If you operate in the field or want an invisible antenna, you've found the right place. Apartaments antennas. VBWFPA - Vertical Black Widow Fishing Pole Antenna

Hy Power Antenna Company - Full size or shortened dipoles, Single band or Multi band, Half Square Antennas, Fan Dipole Antennas, Delta Loop Antennas, Antennas completely assembled Loading coil packages, delta loops

TET-Emtron - Australian antenna manufacturer specialise in supplying amateurs with the best quality products. Amateur radio multiband Yagi antennas, balums, cb antennas, dipoles

K4TR Antennas - K4TR Manufacture and sell simple dipoles, half square 2 wire phased vertical arrays, end fed zepp antennas, G5RV antennas. 1:1 baluns

KJ6Y's Communications service co - Antennas and Towers for Amateur Radio Specializing in installation and maintenance of Tri-Ex and US Towers

Rotating Tower Systems - Using our components you can build a rotating tower with greater capability than 3-4 static towers. A rotating tower allows common rotation of HF stacked arrays, VHF and UHF arrays, and antennas mounted at optimum heights. Component design also allows tower shunt loading and end support for wire antennas

DDS Data-Communicatie - Dds data- communication Data and Tele-Communication Solutions: UMTS GSM GPRS Telemetry programmers Adeunis RF systems, antennas, radio transmission modules, oscilloscopes GPS and coax cables dealer in Holland

Bob-and-Linda Amateur Radio Catalog - Antennas, books, cables and connectors, mounts, speakers