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An 8x2 Element Array Antenna For 144 MHz
After hours of simulations with mininec I got a final design that provides more than 13 dB gain over dipole and more than 30 dB front/back ratio even with very thin elements made of medium conductive stainless steel
post 21 Feb 2024
Phased array antenna Links →
Remote Control Box of 4 Square K9AY Array
Computer Modeled 4 Square K9AY Array will really operate
Single Support Gain Antennas for 80 and 160 Meters
On 80 and 160 meters an antenna with modest gain
Simple 3 element phased array
simple construction setup an tunig noticiable gain and directivity
160 Meter 5 Element Array
a 124' rohn 25 tower as a driven element with a wb0w insulator section, it is guyed with polygon rod, there are four passive elements 66' from the vertical in the ne, se, sw and nw direction
The triple 4-SQUARE Project
Cutting the 12 quarter wave 75 Ohm coaxial feed lines
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Computer Modeled 4 Square K9AY Array will really operate
On 80 and 160 meters an antenna with modest gain
simple construction setup an tunig noticiable gain and directivity
a 124' rohn 25 tower as a driven element with a wb0w insulator section, it is guyed with polygon rod, there are four passive elements 66' from the vertical in the ne, se, sw and nw direction
Cutting the 12 quarter wave 75 Ohm coaxial feed lines
Take off angle of horizontal antenna For horizontal polarization, the electric field will move sideways on a horizontal plane, while for vertical polarization it will oscillate up and down on a vertical plane
Rx antennas 4Square Rx Vertical Array My frequency design of 1.825 MHz a 90 degrees line would be 33,70 metersinstead of the previously calculated 33,27 m
Calculo da Antena Bazooka A double bazooka antenna is a combination that has a complete coaxial wave multiplied by its velocity factor and a total end-to-end length of 1/4 wave for each side affected by another driver shortening facto