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Antenna Big wheel 432 Mhz
ROS,al max. 1,5 nella banda che va da 431,8 Mhz a 433,8 Mhz
post 21 Apr 2024
Antenna for UHF VHF Links →
70cm-Longyagis
The elements have 10 mm, 8 mm or 6 mm diameter, because this is very uncritical and you get the expected datas! For the tuning let the radiator 2mm longer and cut for best SWR at 432 MHz
70Mhz-Yagis
The Yagis have 12,5-Ohm resistance use the DK7ZB-match with 2xlambda/4 50Ohm coax or 28-Ohm
7-Element-Yagis stacked for the 2m-Band
These yagis and groups were designed with YO7.23 from K6STI and checked with EZNEC from W7EL. With a gain of 14/17/20dBd
3 element yagi beam 50 MHZ
SWR regulation with harpin system
8 Element Wideband Yagi for 70-cm
It's a scaled down version of the 144 MHz ultra wideband yagi produced by Rutland Arrays. The antenna design was optimized for broadband performance using YAGIMAX software
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The elements have 10 mm, 8 mm or 6 mm diameter, because this is very uncritical and you get the expected datas! For the tuning let the radiator 2mm longer and cut for best SWR at 432 MHz
The Yagis have 12,5-Ohm resistance use the DK7ZB-match with 2xlambda/4 50Ohm coax or 28-Ohm
These yagis and groups were designed with YO7.23 from K6STI and checked with EZNEC from W7EL. With a gain of 14/17/20dBd
SWR regulation with harpin system
It's a scaled down version of the 144 MHz ultra wideband yagi produced by Rutland Arrays. The antenna design was optimized for broadband performance using YAGIMAX software
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