antenna array

Cubic Quad  ^pop - The cubic quad is a very popular way to get reasonably high gain and excellent front to back ratios as well as low angles of radiation for without going to extreme heights. Includes design for 2 6 10 12 15 meter bands

8 Element Quad for 145 Mhz  ^pop - 8 elements quad antenna for 2 meters band, centered on 145 Mhz

A portable 2-element VHF yagi  ^pop - Build a portable VHF yagi antenna for 2 meters. All you need is two rabbit ear antennas from Radio Shack, two CATV baluns, four feet of 3/4 CPVC pipe with one tee.

7Mhz Vertical antenna  ^pop - The secret with this antenna is to install as many radials as you can around the base of the antenna, they can be anything from 1/8 wave or longer.

7 MHz Vertical antenna  ^pop - 7 MHz Vertical antenna for ham radio - 40 meter band in spanish

Switchable Antenna 80/160 meters band Priority listing - A switchable antenna for 80/160 meters by IK1ZOY. A new version of a 1/4L 80 m. dipole modified for use in 160 m. band. using it's own coaxial cable feeder to wrap a coil.

Construction Practices - The construction of light weight structures that support wire antennas requires some definite insight into the behavior of the materials

160m Shielded loop antenna - the 160m shield loop antenna based on W1FB articles in a number of ARRL publications

A Small Loop Antenna for Forty Meters  ^pop - Article on a small loop antenna for forty meters band by Ben Smith, W4KSY

Thinking about Ideal Loops - Loop antennae have been used from ELF to UHF since the beginning of radiocommunications. At low frequencies, the main problem for loop antennae is to have enough sensitivity; the antenna being very small respect to the wavelength the collected energy is also small. To increase the output level the loop may be made resonant, so loosing it%u2019s intrinsic aperiodic characteristics.

The Four Foot Loop Antenna - AM Four Foot Loop Antenna for VLF

The two foot loop Antenna - two foot AM loop antenna

Effective HF Mobile Antennas - Effective HF Mobile Antennas Keith WB2VUO, explains difficulties on gaining antennas efficiency on lower bands with mobile antennas.

Pfeiffer Quads - The Pfeiffer Quad was described in QST and has the desirable feature that it is smaller than a standard cubic quad but does not compromise performance very much. The Pfeiffer design is rather difficult to construct because of the complicated linear loading networks required.

Roofspace Antennas  ^pop - How to build a roofspace antennas and get them to work. Explains how to build an effective antenna in your roof. Very interesting if you don't have possibilities to setup an antenna in your roof.

The Folding Loop - The folding loop antenna for VLF

Fiber Glass Rods and Tubes - Properties of fiber glass rods and tubes

Groundplane antenna - Short guide to build your own groundplane antenna, includes radial measurements fro warc bands

40m Short Antenna  ^pop - GM4JMU shortened dipole for 40 meters band

Half square antenna - The elevated half square antenna is a very simple antenna that can be constructed from common materials yet gives significant improvement over a dipole at the same elevation. Ground mounted versions of this antenna are commonly used in amateur radio for 75/80 and 160 meter bands

How create simple dipoles - How to create a simple but effective half wave dipole, illustrated instrucions on how to build wire antennas

IC-PCR 1000 in Germany on-line receiver - Icom PCR 1000 HF/VHF/UHF Antenna VHF/UHF Diamond X 50N HF W3D22 80m/40m 34m (111,54 feet) long based in Germany Hamburg JO43XO.

ON4AOI Automatic Band Decoder - Automaticaly select the correct antenna and bandpass filter, by ON4AOI

The One Man Tower - Complete tower system incorporates rotator mount, and lateral support collars. You never have to climb again - and forget the hassle of tilting over to work on large arrays. The "One Man Tower" is the strongest dmall footprint free standing self erecting tower in the world

AM Loop Antenna Calculator - Java script calculator for AM loop antennas