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The Quarter Wave Ground Plane is a very common, simple, and effective antenna. Generally it consists of a quarter wave vertical radiator connected to the center of the coax feeder, and 4 radials, often sloping downwards, that are also about a quarter wave long.
18 sty 2017 · The antenna system requires a "ground plane" for the radio wave to form. With dipoles, one half of the antenna is your ground. In verticals, something below must provide ground to complete the RF wave.
This calculator can be used to design a Quarter Wave Ground Plane antenna, with radials. The radiating element is a quarter wave (λ/4) and the radials are 12% longer. There are usually four radials, three being a minimum, but you could use up to six.
14 wrz 2023 · Learn how ground screens can reduce ground loss and improve the performance of small HF antennas. Find out how to use metal mesh, radials, and other techniques to create a low-loss path for current return.
INTRODUCTION. umber of radials either buried or lying on the ground surface. NEC modeling has indicated that an antenna with four elevated λ/4-radials would b. as efficient as one with 60 or more λ/4 ground based radials. Over the years there have been a number of attempts to confirm.
Learn how to build a Tapered Area Small Helix (TASH) antenna, a unique and efficient broadband vertical for the HF bands. The article explains the design, features, problems and measurements of the TASH antenna, and shows how to use chicken wire as a counterpoise.
A ground plane antenna for 2m or 70cm is one of the simplest antennas to build and get working, and it can work quite well for repeater or simplex operation. It is easy to build for other bands as well. I’ll show you several different construction methods that you can use, based on the materials you have available.
