beam theory

The Antenna Elmer - Here you will find information about wire antennas as well as directional beams.

Dualband-Beam 12/17 m - The beam has only one feedpoint with 50 Ohm and has an open-sleeve element for 12 m by DK7ZB

PV6 Yagi antenna - 6 elements yagi beam for 15 meters band, by T73M

PV5 Yagi antenna for 20m - 5 elelents yagi beam antenna for 20 meters band by T93M

BVO2 Yagis - Yagi beam plans for 144MHz band

BVO70 Yagis by DJ9BV - The latest and best yagi beams for 432MHz tested and optimized with NEC

Baluns: theory and projects  ^pop - All about baluns with photos, projects and instructions, by IZ7ATH

Reflected W Beam - Hexagonal Wire Beams for 40-10m from DL7IO, different mono/multiband designs with building descriptions and model files for EZNEC

T-Hunting Antennas  ^pop - 4 Element Cubical Quad, Yagis, LZA Circular Quad, Shrunken Quad , quarter wave, J-Pole, beam mounting , changing polarity

NB6Zep Antenna and more - A modified EDZep for 20 meters, Yagi, Zepp Beam, Dual Dipole, Space Restricted 80 meter wires. Operating Bands: 40 thru 10 meters with tuner

World Wide Radio Group Norway - 20 WW 118 op Sly, Division Director of the WWRG Norway.

Tampa Amateur Radio Club - Since 1922 Tampa's largest Ham organization. Dedicated to hams by hams. Classes in theory, code, and experimentation are a regular event.

Amateur Radio RF Safety Calculator - This is a main beam power density estimation program intended for use as part of a routine evaluation of RF safety compliance with FCC regulations.

rec.radio.amateur.antenna - Antennas: theory, techniques, construction

Bencher Antennas - HF Vertical and Beam Antennas, antennas accessories by Butternut

ZX-YAGI Antennas - Fine HF beams for Ham Radio and CB made in Germany

K5BOB Bobber Hex - Bobber Hex Antenna, Made of CNC cut UHMW plastics. Very little metal is used in production of this Hex beam antenna

M2 Antennas - 80m to 23cm beam antennas, oscar antennas, and antenna rotors

T.G.M. Communications - MQ-1 four band HF beams 20,15,10,6 meters MQ-2 six band HF beams 20,17,15,12,10,6 meters, beam antennas and Hybrid Quad antennas

About Sunspot cycles - Theory to explain solar cycles variability proposed by Jean-Pierre Desmoulins

PolarPlot - Freeware antenna software that lets you see what the polar diagram of your rotatable beam actually looks like where it is operating. With PolarPlot you can measure the polar diagram of the antenna and check for abnormalities - compare plots taken before and after changes to the design or location - check the -3dB beamwidth - look at the front to back ratio - see the size and position of the sidelobes.

BeaconClock - Real-time, schedule of the transmitting times, frequencies, short-path and long-path beam headings for each beacon from your QTH. BeaconClock is for Windows 9x/NT/2k systems.

BeaconClock - Freeware real-time, schedule of the transmitting times, frequencies, short-path and long-path beam headings

NuTest - NuTest is a complete XP/Vista compatible training package that will help you obtain or upgrade your FCC Amateur Radio License by passing the written theory tests. It creates interactive on-screen and printed tests using the official ARRL/FCC question pools.

Inductors and Transformers - Solenoids, variable inductors, electromagnetic induction, transformers theory at G3YNH