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Antenna double bands 144/432 mhz
L'elemento attivo e' un dipolo aperto. L'accoppiamento con la discesa è realizzato con il sistema hair-pin derivato dal Delta-match
post 03 Feb 2024
Antenna for UHF VHF Links →
Stacking Transformation
The ideal impedance transformation ratio are actualy ZL = 50 Ohm and ZI = 100 Ohm, but to get this ideal impedance transformation means that for TR, we must use a coaxial cabel with a Characteristic impedance Zo = 70.71 Ohm
Super facil antena vhf 1/4 onda
Antenna Ground plane (GP) has the property of receiving and transmitting in an omnidirectional way, that is to say everywhere equally
Super J-Pole Collinear
The antenna J is very simple in construction and has good results
T-match for vhf -uhf Antennas
The T-Match with its balanced feed point is one method of feeding a Balanced Dipole
Antenna Yagi 11 Elements
After using the charts according to DL6WU, the following values have been encoded for the calculation
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The ideal impedance transformation ratio are actualy ZL = 50 Ohm and ZI = 100 Ohm, but to get this ideal impedance transformation means that for TR, we must use a coaxial cabel with a Characteristic impedance Zo = 70.71 Ohm
Antenna Ground plane (GP) has the property of receiving and transmitting in an omnidirectional way, that is to say everywhere equally
The antenna J is very simple in construction and has good results
The T-Match with its balanced feed point is one method of feeding a Balanced Dipole
After using the charts according to DL6WU, the following values have been encoded for the calculation
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