J Pole Antenna Calculator - Calculate Dimensions for J Pole Antenna

By PD9JS

Online tool to calculate dimensions for constructing J Pole antennas at desired frequencies.

This web page offers an online antenna designer tool for hams to calculate the dimensions needed to construct a J Pole antenna for any desired frequency. The J Pole antenna is a simplified version of the Slim Jim antenna, radiating and receiving signals in an omni-directional pattern. It does not require a ground plane, making it suitable for indoor mounting. With the ability to be made from common household wiring, this antenna performs well for both receiving and transmitting purposes. The calculator is based on radio waves traveling at the speed of light and provides metrics in both imperial and metric units.

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Antennas/J-Pole

The title of the main category is J-Pole and it deals mainly with Building J-Pole amateur radio antennas. The link to this resource has been on our site since Sunday Jul 20 2025, and it has been followed 16 times. So far no one has rated it yet. Be the first to rate it!
Last updated: 2025-07-20

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