Topband: 160M 8 Circle Array for transmit
Richard (Rick) Karlquist
richard at karlquist.com
Fri Mar 4 13:43:28 EST 2016
On 3/4/2016 9:38 AM, Ray Higgins (W2RE) wrote:
> Im looking for both spacing and phasing for 80M and 160M 8 Circle array for a QTH in Maine. I cant seem to find much information by searching online. Can someone point me in the right direction.
> Ray Higgins
I am currently building a receive system as follows:
Freq.: 1.83 MHz
Diameter: 290 ft
Phasing: 115 degrees
RDF: 12 dB
If we number the verticals 1 through 8 going around the
circle, amplitude is as follows:
1, 2, 5, 6: zero
3, 4, 7, 8: one
3, 8: zero
4, 7: 115 degrees
The distance from 3 to 8 is chosen to be exactly 1/2 wavelength.
The distance from 3 to 4 comes out to about 0.2 wavelength,
a useful spacing.
Models well on EZNEC. Good gain, very low sidelobes.
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