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First page UA0SN This is the city where I live This is the lake nearby Irkutsk city. Where to find me on the globe. All about the JCC award (Japan) Read my story and add yours Quad antenna - online calculator Hints from UA0SN Some ideas which need a discussion. Several links for HAMs

Cubical Quad Antenna Animated Quad and Yagi comparision CLICK Click to see an animated Quad and Yagi comparision






I like Cubical Quads(CQ) antennas and want to help in calculating sizes of such an antenna.
A very good theoretical basis you can find in:
  1. "Cubical Quad Antennas" William I. Orr(W6SAI) and Stuart D. Cowan(W2LX) 1993, p.109
  2. "The Quad Antenna" Bob Haviland(W4MB) 1993, p.159
  3. and at the siteL.B.Cebik W4RNL.

2 element cubical quad.
Geometric sizes.


Here in Siberia we use antennas with console and guys (see picture). This solution gives a very good rigidity to an antenna.
We have a strong winds in Irkutsk-city (the city where I live) up to 25 meters/sec. Antennas built 15-20 years ago accorcing to this scheme still work fine.

To get dimensions for an antenna you want to build input your values.
It could be a very good idea to look through books mentioned above or look into L.B.Cebik's site to find out the best coefficients of spacing and reflector elongation which might meet your need.
Input a frequency (MHz):
Input the Coefficient of Spacing: of wave length
Input a Coefficient for a Reflector: (This means a reflector is 5% longer than a driven element.)

Myself design UA0SN
October 21, 2005