grounding long wire

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

Installing a balun - The correct way to install a lowngwire antenna with a balun

Longwire Antenna Balun Project  ^pop - Home brew a long wire balun

The Monoband HF dipole antenna - If you are looking for an easy antenna for your favorite band, you can't go wrong with an halfwavelenght dipole, all you need is 3 insulators and some wire

EA6VQ - Open wire feeding and baluns - Discussion about open wire feeding and baluns took place in the Moon-Net reflector.

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.

Homebrew Hex Wire Beam Antenna - Hombrewinf the hex beam antenna by W6OT

CardboardHorn - Seattle Wireless - A Cardboard Horn antenna for 802.11b

A tri-band 2 element portable Yagi - Additional notes and eznec file on original article of a Portable 3-Band Yagi antenna for 10-15-20 meter band made with wire elements, original article published by VE7CA

Installation of a Utility Pole - There are many ways to support an amateur radio antenna. Installatio of a utility pole will provide an antenna height of approximately 13 meters (40 feet) and will require no guy wires.

How to build a tin can waveguide antenna  ^pop - Looking for an inexpensive way to increase the range of your wireless network? A tin can waveguide antenna, or Cantenna, may be just the ticket. This design can be built for under $5 U.S. and reuses a food, juice, or other tin can.

A Tincan feed for 2.45Ghz - Construction details for a simple but effective antenna for 2.45Ghz wireless lan use.

Dish 802.11 Wireless Networking Antenna - This antenna modification is for the IEEE 802.11b networking protocol that operates at 2.4 GHz. It can be scaled easily to the 5 GHz frequency used by IEEE 802.11a by simply scaling the dimensions on the feed can and the excitation antenna to 2.4/5 = 48% of the dimensions shown above.

2.4 Ghz double quad antenna  ^pop - An easy to build, compact antenna for wireless lan applications that offers a reasonable amount gain.

Pringles Yagi Antenna - Design and build a Pringles Yagi antenna for 2.4Ghz.

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

DirectionalWaveguide - Seattle Wireless - Waveguide antenna is a type of DirectionalAntenna and is a modified waveguide. A waveguide is simply a tube, either rectangular or cylindrical in cross-section, that will carry a microwave radio signal with very low signal loss

PringlesCantenna - Seattle Wireless - The PringlesCantenna is an ultracheap Yagi-type directional antenna that can be built for under $10. The original Pringles Yagi was designed by Andrew Clap.

SardineCanAntenna - Seattle Wireless - Sardine Can Antenna. is a BiQuad or Bi circle - wire length each side (8 x 1/4 waves ) 31 mm

DirectionalBiQuad - Seattle Wireless - A biquad is a fairly powerful antenna which is relatively easy to construct, with impressive performance for their size. A link greater than 5 miles can be made with a pair of these as a stand-alone antenna and a Prism2 100mW card, provided you keep coax short, and your line-of-sight is clear.

MicroTV Aerial - Seattle Wireless - Yagi antenna for 2.4Ghz band

2.4GHz Cubic Quad Antenna  ^{updated  pop} - The Cubic Quad antenna is a commonly homemade antenna in the range of about 150 odd MHz. Our little project was to design one of these for use in the 2.4GHz range for 802.11 wireless LANs.

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

Battery University - On-line resource that provides practical battery knowledge for engineers, educators, students and battery users alike. The papers address battery chemistries, best battery choices and ways to make your battery last longer.

Avoid pitfalls when recharging batteries to ensure long life - Portable design - avoid pitfalls when recharging batteries to ensure long life - secondary batteries can be simple devices, but improper charging can be devastating to the user experience.