ZX-20-2 2-element 20m Mono Band Beam

* 20m Monobander * Elements: 2 * Power rating: 3kW * Forward gain: 6.3dB * Front-to-back ratio: 18dB * VSWR: 1.2:1 (typical) * Boom length: 2.7m * Turning radius: 4.6m * Weight: 10kg
The famous ZX Mono Band Yagis designed by ON4UN. Single band antennas have a number of advantages and are the purist form of Yagi. Element spacing is critical for optimum F/B ratio and forward gain. With multi-band antennas the designer has to compromise and no band reaches optimum gain of F/B ratio. When it comes to matching the feed impedance, you have the perfect match because you only have one band to worry about. Gamma matching has long been advocated by the World's antenna designers. The beauty of gamma matching is that it is simple, reliable, lossless and easily adjustable. And finally there are no traps to introduce losses that otherwise occur.
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