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450 Ohm Ladder Line J-Pole For 144 & 440 MHz
It is a vertically polarized antenna with two elements: a ¾ wavelength radiator and a ¼ wavelength matching stub. It operates as an end-fed half-wave antenna
post 27 Feb 2024
Antenna jpole Links →
J-pole 144-146 Mhz
Sia in VHF che in UHF l' SWR e' circa 1:1 sulla porzione di banda che mi interessa
J-Pole Antenna Design
On most of the J Pole designs out there, a choke should be used as close to the feedpoint of the antennameters
J-Pole Antenna
J-pole. on the bottom end the two conductors of the twinlead are twisted together and soldered
J-pole antennas for 2m-40m with Wireman cable
have built up the antenna for 2 m, 6 m, 12 m and 30 m. The table gives the values for experimenting with the other bands
J-pole 144Mhz
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Sia in VHF che in UHF l' SWR e' circa 1:1 sulla porzione di banda che mi interessa
On most of the J Pole designs out there, a choke should be used as close to the feedpoint of the antennameters
J-pole. on the bottom end the two conductors of the twinlead are twisted together and soldered
have built up the antenna for 2 m, 6 m, 12 m and 30 m. The table gives the values for experimenting with the other bands
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
Atu balanced feeder antenna system An ATU has the advantage of bringing the feeder-antenna system to resonance, act as a band pass filter both on receive and transmit and a low SWR