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#### 3 element Yagi Antenna Calculator

Simple yagi antenna consists of three elements viz. director, dipole and reflector
post 29 Jan 2024

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EZNEC antenna software
EZNEC v. 6.0 programs function on Windows XP(SP3) and later Windows operating systems, 32 or 64 bit

Folded dipole antenna input impedance calculator
If you play with the numbers, and get the input impedance down to 200ohms, you'll need a 4:1 balun to feed it from 50 ohm coax

Folded Dipole Calculator
The impedance of this antenna is around 300 ohm, so you may want to use a transformer or a 1/4 long piece of 120 ohm coaxial cable to match this impedance to 50 ohm

Impedance Transformation with Quarter-Wave Lines
The input impedance of a line an odd multiple of 1/4 long is

Inductive Reactance Calculator
An online inductive reactance calculator: write frequency, inductance

Noise suppression with X-phase II This device similar devices are known as QRM eliminators or noise killers, makes it possible

The K9AY loop antenna for 160 and 80m bands You don't have the space to put up a 4 beverage antenna's, an ewe or a 4-square and want 'good ears' on 160 and 80m? no problems try a k9ay loop antenna

Spiderbeam 10-15-20m E' una Yagi tribanda full-size leggera, fatta di tubi in vetroresina e filo