Friday, 15 October 2021

2 Meter 440 J Pole Antenna - Updated

Open 2 meter 440 j pole antenna Optimized for 2 meters and covers 440 too BUILT PER DIRECTIONS IT COVERS ENTIRE 2M BAND. Ive built my j-poles out of 10ft sticks of 12. THIS ANTENNA IS BUILT ALMOST ENTIRELY OF HARDWARE STORE ITEMS WITH THE EXCEPTION OF THE FEEDPOINT CONNECTOR AND WORKS AS WELL OR BETTER THAN MOST COMMERCIAL ANTENNAS. Read also antenna and 2 meter 440 j pole antenna Using an antenna analyzer I was able to tune my antenna.

Homemade 2M440 J-Pole for 35. True Plumbers Delight for 2 Meters An All Copper J Pole.

Uhf 440 470 Mhz Slim Jim Antenna Kb9vbr Antennas Ham Radio Antenna Antennas Antenna Measurements on overall length and stub length are from the centerline of the separation pipe horizontal to the top of the antenna.
Uhf 440 470 Mhz Slim Jim Antenna Kb9vbr Antennas Ham Radio Antenna Antennas Antenna The trade-off on 2m is an enhancement of a much wider bandwidth and an overall lower 2m VSWR.

Topic: This page documents a build of a 2-element 12 wave collinear J-Pole performed by Harry KC9EOT and myself KB8OJH. Uhf 440 470 Mhz Slim Jim Antenna Kb9vbr Antennas Ham Radio Antenna Antennas Antenna 2 Meter 440 J Pole Antenna
Open Uhf 440 470 Mhz Slim Jim Antenna Kb9vbr Antennas Ham Radio Antenna Antennas Antenna
The distance between the main element of the j-pole centerline and the tuning stub centerline is 2. Uhf 440 470 Mhz Slim Jim Antenna Kb9vbr Antennas Ham Radio Antenna Antennas Antenna


2 MetersAn All-Copper J-P01e By Michael P.

Uhf 440 470 Mhz Slim Jim Antenna Kb9vbr Antennas Ham Radio Antenna Antennas Antenna A lot of 2 meter band projects have been published in books and magazines for the amateur radio enthusiast but there is a definite shortage of projects that address the 34 meter band.

This article describes the J-440 a very simple J-pole gain antenna. For 2 meters the coil is 4 turns of coax at 5 inches in diameter. Use the last part of your feedline as the choke before attaching to the feedpoint. Hood KD8JB 2323 Jefferson Drive SE Grand Rapids Ml 49507-3148 number of years ago I built a J-Pole antenna from some scrap aluminum tubing and a 5-foot stick of TV mast. The Connect at measurement is 2 14 inches from the top of the horizontal member to the point of connection. Proper SWR and impedance on the 2 meter frequency first.


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