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Choke Balun
We hear a lot and see many articles about using balun technology to reduce RFI, provide better matching to balanced antennas like 1/2 wave dipoles or to reduce feed-line interaction with yagi and vertical
post 13 Mar 2024
Toroid & balun Links →
1:4 Balun, ON6MU
Balun for folded dipoles
4:1 balun for 160 to 10 meters
Here we calculate the half wave length of the matching section of the 4:1 coax balun
4:1 coax balun design CALCULATOR
Here we calculate the half wave length of the matching section of the 4:1 coax balun
50 ohm single-band baluns
The balun herein described is suitable for 50-ohm monoband antennas which can often represent a valid choice
JI -Test, measure balun, and compare antenna baluns or balums
Many articles and technical sources on baluns or balun design ignore voltage, focusing only on current. Focusing only on current is a serious oversight that can result in defective system design
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Balun for folded dipoles
Here we calculate the half wave length of the matching section of the 4:1 coax balun
Here we calculate the half wave length of the matching section of the 4:1 coax balun
The balun herein described is suitable for 50-ohm monoband antennas which can often represent a valid choice
Many articles and technical sources on baluns or balun design ignore voltage, focusing only on current. Focusing only on current is a serious oversight that can result in defective system design
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