Helix antenna

Quadrafilar Helix Antenna - Quadrafilar Helix antenna for 137 Mhz

70 cm ATV Antennas  ^{updated  pop} - Home made antennas, ATV stuff, 70 cm antennas, helix antennas and a lot of intresting pictures to view

Quadrafilar Helix antenna for 436 Mhz - This is an antenna that author just built. Was intend for receiving the AO-27 downlink (at 436.800 +/- doppler). It is built with right hand circular polarization, and the gain is supposed to be in the neighborhood of 3 DB.

The Gain of the Axial-Mode Helix Antenna - by Dr. D.T. Emerson, National Radio Astronomy Observatory (NRAO++). Antenna Compendium Volume 4, pp 64-68, 1995, published by the ARRL.

Helix Antenna - Design helix antennas with this DOS program by OH0NC

Quadrifilar Helix Antennas - The purpose of this page is to provide information and links about Quadrifilar Helix Antennas. It's the best antenna to use for APT satellite reception

Helix Calc  ^updated - Helix antenna calculator, to design and make helix antenna plans

Online helix antenna calculator - PHP Helical antenna calculator, need SVG viewer

Mobile Helix Antennas for HF - Normal mode helix antennas for HF mobile. Photos andn plan for a 20 meters mobile helix antenna by N2MH

QFH antenna for weather satellite band - This article describes how to make a quadrifilar helix (QFH) antenna easily, from inexpensive materials: uPVC plumbing pipe and RG-58U co-axial cable

900 MHz Helical Antenna - Photos and description of a homebrewed 900 Mhz antenna

2.4Ghz Helix antenna  ^pop - Concise instructions on making a broadband helical antenna for 2.4GHz use, such as: 802.11b wireless networking 2.4GHz video links.

A 16 Turn S-Band Helix - This design represents the smallest practical antenna for Oscar-13 mode-S. Perfect beacon reception at all times is possible, and acceptable SSB even at 43,000 km range.

13 cm Helix Antenna  ^pop - Here is the design of a 2.4 GHz antenna that is ideal for amateur satellite communications. This antenna is easy to assemble because the design itself tolerates inaccuracies in the construction without really affecting performance.

Helix antenna for 2 meters  ^pop - Plan of a helix antenna for 2 meter satellite use by VK5ZAI

A quadrifilar helix weather satellite receiving antenna - This article describes how to make a quadrifilar helix (QFH) antenna easily, from inexpensive materials: uPVC plumbing pipe and RG-58U co-axial cable.

A GPS Helix Antenna - Construction Details For A GPS Helix Antenna

Axial-Mode Helical Antennas - Notes on Axial-Mode Helical Antennas in Amateur Service. Helix Basics, Modeling Issues, and Short Helical Antennas Over Perfect Ground

The normal-mode helix antenna  ^updated - A helix will work in the normal mode when the diameter and pitch of the helix is less than 0.1 Lambda

Helical/helix antenna 2.4 GHz HOWTO - Helical/helix antenna cookbook recipe for 2.4 GHz wavelans and/or WiFi applications

Gain of Helix - This article summarizes probably the most extensive numerical modelling calculations on the helical antenna ever performed.

2400 MHz Helix Antenna - This antenna is easy to build and suitable for broadband work, satellite work and terrestrial work.

A Quadruple Helix for AO-40 - A homebrew project of a quadruple helix antenna system based on G3RUH 16 turn helix antenna for 2.4 GHz.

Quadrifilar helicoidal antenna - Design your own quadrifilar helix, the site even generates a drilling pattern in a PDF file. Several different construction methods are shown.

Design and build helix antennas - An on-line javascript calculator and quite a few pictures to show how to make a helix antenna.