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Quarter Wave Stub Impedance Calculator

A quarter wave transformer is used to match two transmission lines with different impedances
post 08 Nov 2020


Antenna Feed Lines Links

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Finding the Velocity Factor of Coaxial Cable
a tutorial in use of Velocity factor solver to find the velocity factor of a sample coaxial transmission line using an antenna analyser

Ham Radio Ladderline, KV5R
First let's dispel the greatest myth in antenna theory: Antennas must be resonant to be efficient. Baloney! It just ain't so!

Home Brewed Antenna Ladder Line, AG5GW
I'd like to show you how I solved this problem, quickly and cheaply, and to great effect

Homemade Open Wire Feedline, W1AEX
With a few simple tools and a little effort you can make your own open-wire line that is superior in many ways to the window line that is commonly sold by antenna product vendors