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Antenna Short Linear Loaded
short ham antennas are not as efficient nor as effective as a full length half wave dipole regardless of the configuration chosen
post 09 Apr 2024
Folded Dipole Antenna Links →
Coaxial Folded Dipole Antenna
you can make a 50 ohm version directly from RG-58 or RG-8 / RG-213 cable
A folded dipole that uses 300 Ohm TV
The length L is calculated using standard dipole formulas 468/Frequency in Mhz, for feet, or 143/Frequency in Mhz for meters with a loss factor of about 2-5% factored in. Two shorting straps are soldered close to the ends at 0.07L, a distance of 0.86L
The Folded Dipole Antenna
A folded dipole is a dipole antenna with the ends folded back around and connected to each other, forming a loop
Half-Wave Dipoles - Feedline VSWR
This program analyses both simple and folded dipoles. Folded dipoles allow a higher impedance and hence lower loss feed line to be used
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you can make a 50 ohm version directly from RG-58 or RG-8 / RG-213 cable
The length L is calculated using standard dipole formulas 468/Frequency in Mhz, for feet, or 143/Frequency in Mhz for meters with a loss factor of about 2-5% factored in. Two shorting straps are soldered close to the ends at 0.07L, a distance of 0.86L
A folded dipole is a dipole antenna with the ends folded back around and connected to each other, forming a loop
This program analyses both simple and folded dipoles. Folded dipoles allow a higher impedance and hence lower loss feed line to be used
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
Build a Three-Way Antenna Switch and Displa To use a wireless relay to select one of two high current capacity power relays
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 factor