The feed line (also called the transmission line) is the RF power conduit between your radio and your antenna. All the energy you generate travels to the antenna through the feed line.

To choose and use an antenna effectively, it’s important to understand some basics of propagation – how radio waves get from one place to another. For these reasons, knowledge …

Now that you have a grasp of the nature of antenna impedance, let’s consider the pathway from the antenna to your radio: the transmission line. Transmission lines (sometimes called feed …

Antenna Wires and Feed Lines to a type of feed line known as windowed ladder line. The ladder line subsequently con-nects to a balun in or near your station (see About Baluns” in this issue …

Arbitrary Transmission Line Calculator (for transmission lines and directional couplers) by Dr. David Kirkby (G8WRB), who works at the department of Medical Physics, University College …

re losing in your feed line. Th s is an easy function to use. One method is to disconnect the feed line at your antenna, go back inside your station, attach the analyzer to the feed line, and …

Jan 12, 2008 · Feedline “optimization” (cut to length) is suggested by the manufacturer, because the outside of the coax shield would then act like a single vertically mounted radial. A balun at …

Feeding Your Antenna We've learned that most antennas can be used with feed lines of any convenient length. We need to be aware, however, that all feed lines have some loss, and …

These factors unbalance the currents fl owing in the legs of the antenna and the feed line. In this article, I will use the coax-fed antenna as an example to illustrate this concept.

Remote Tuners se as possible to the antenna. They are built to withstand the elements, and they usually get their operating voltage through a separate cable, o through the feed line itself. …