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30 cze 2021 · Here we take a look at building a simple 20M Vertical Dipole purely from RG58 Coax. Thanks to Stuart M0OVG @ G8AMC radio club. https://www.g8amc.co.uk/20m-t2lt-by-s...
It was designed for the 20 meter band and works well on DX! I tried an antenna that you may be interested in. It tunes up very well with my rig using an antenna tuner. It does not need radials like a 1/4 wave vertical antenna does. The antenna is a 2" diameter aluminum tubing about 16'8" long.
The 20m antenna is simple and cheap to make, and has a performance that matches commercial antennas but at cost considerably lower. The design was purposely based on a telescoping fibre glass fishing rod as this allows it to be easily stowed away in the car.
The purpose of this project is to design a simple multiband vertical dipole antenna for 20 meters and above, with a tuner, that will provide gain and a circular pattern on the higher bands. It will supplement the big horizontal dipole by providing good omnidirectional coverage, with some gain, from 20 through 6 meters.
These plans will help you build a vertical dipole using a coil for better matching and use tubing or thin walled pipe for the upper leg and wire for the bottom leg just to lighten things up, (or tubing also for the bottom leg if you prefer).
A simple, cheap and easy to build 26 feet long vertical antenna that works DX on 20 - 10 meters including WARC BANDS. See latest feedback near bottom of article!
You are now the proud owner of a Comtek 20 Meter Vertical Antenna. This antenna may be built as a 20 meter, 17 meter, 15 meter, 12 meter or 10 meter monoband vertical antenna. Specifications: • Full band coverage on 20 or 17 or 15 or 12 or 10 meters with SWR under 1.5:1 • No Tuner needed • Bandwidth: Over 750 kHz
