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Transmission lines for dummies

450 ohm Ladder Line requires a 9:1 balun in order to match to a 50 ohm line
post 09 Nov 2020

Antenna Feed Lines Links


Balanced Self Matching Feed Line System
new and improved 9 to 1 linear matching transformer that is used on the radio end of the feedline

Band-pass filters
There are applications where a particular band, or spread, or frequencies need to be filtered from a wider range of mixed signals

Cable impedance
This document tries to clear out some details of transmission lines and cable inductance

Transmitting Line Condition vs. SWR Table
According to the transmission line theory, the formulas used by the corresponding columns, are as follows