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Learn about the random wire antenna, a simple and effective antenna for amateur radio operators. Discover how to construct and tune this affordable and versatile antenna for optimal performance.
sample types of end-fed antennas. A wire stuck in the antenna connector of a radio and tossed over a tree branch. A quarter wave or similar vertical antenna, fed against a ground plane or ground rod. They may use traps or other methods for multiband operation.
A random wire is exactly that—a piece of wire that’s as long as you can possibly make it. One end of the wire attaches to a tree, pole or other support, preferably at a high point. The other end connects to the random-wire connector on a suitable antenna tuner.
A random wire antenna is a radio antenna consisting of a long wire suspended above the ground, whose length does not bear a particular relation to the wavelength of the radio waves used, but is typically chosen more for convenient fit between the available supports, or the length of wire at hand, rather than selecting length to be resonant on ...
The most common multiband system in use today is a random-length wire coupled to the transmitter or transceiver through a Transmatch, as sketched in Fig. 1. The beauty of the method is its simplicity — just get the flat top portion of the radiator as high as possible, using whatever safe supports are available.
What is a random wire antenna and how does it work? The term “random” infers that you can use any length of wire you want as an antenna, while that basic fact is true, there are some practical considerations.
11 paź 2024 · Not that an 9:1 End Fed Random Wire (EFRW) is unique or a Common Mode Choke (CMC) is, but the combination of both on a single PCB has not been released commercially to date. The idea behind this PCB is to have your antenna isolated from your coax.
