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160-80-40m TRAP Dipol Antenna
Our antenna consists of three parts. The 9.82m section operates on the 40m Band and is terminated with 40m TRAP Trap. 3.35m section works in 80m band and ends with 80m TRAP
post 31 Mar 2024
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High-Q Coil Construction Techniques
High-Q coil inductors have something in common: the length of the coil can only be slightly longer than its diameter. In other words, high-Q coils have cube-like dimensions
Homebrew Your Own Inductors
Air-dielectric inductors can be made quite easily at home
Helical Coil
The inductance and self capacitance of a helical coil can be determined by entering its dimensions in the boxes above. The length of wire used is also calculated
Jar Capacitance Calculator For Coils
This calculator requires the use of Javascript enabled and capable browsers. The purpose of the calculator is to determine the capacitance value of the jar capacitor needed for the circuit's coil
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High-Q coil inductors have something in common: the length of the coil can only be slightly longer than its diameter. In other words, high-Q coils have cube-like dimensions
Air-dielectric inductors can be made quite easily at home
The inductance and self capacitance of a helical coil can be determined by entering its dimensions in the boxes above. The length of wire used is also calculated
This calculator requires the use of Javascript enabled and capable browsers. The purpose of the calculator is to determine the capacitance value of the jar capacitor needed for the circuit's coil
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