The circuit to be described was developed as a simple and effective version of a more complex converter which has been in use at tbe Author's station for the past five years

An analysis of the halfwave dipole shows that the field from a single dipole radiated at an angle

The vertical ground plane antenna has many notable advantages for amateur radio work

Antennas to quote a friend, are one of life's eternal mysteries, all I'm totally certain of is that any antenna is better than no antenna and the antenna should preferably erected as high and be as long as is possible or desirable

W1jr. joe spoke on the subject antennas and antenna systems, where is the state of the art going?

L'antenna a stilo dal punto di vista della realizzazione è sicuramente la più semplice che ci sia

Antennas and transmission lines the transmitter that produces rf1 energy for the antenna is usually located some distance from the antenna terminals

We see here the principle of a half-wave dipole

A conductor supplied in the middle has an impedance which depends mainly on its length and its diameter but also on the frequency

How do you connect a receiver or transmitter to an antenna, Simple a transmission line

How do you connect a receiver or transmitter to an antenna, Simple a transmission line

Una comoda antenna multi-banda,pocca spesa minimo ingombr

There are two families of loop antennas: large loops whose total length is of the order of one wavelength and small loop antennas tuned like oscillating circuit

The dipoles are generally half wavelength antennas, these are calculated using the following formula: Total dipole length = 142.5 / F (MHz)

The loops shown are all coupled with a ferrite transformer which is used to match the 50 ohms coaxial

On this web site you will find a series of projects of interest to Radio Amateurs and other hobbyists

It is often thought that running an open line through a wall is difficul

The highest development of the long-wire antenna is the rhombic antenna it consists of four conductors joined to form a rhombus, or diamond shap

This directional antenna is typically mounted broadside to the desired transmitter

The use of a small Magnetic Loop as an antenna although usually better than a Hertzian dipole

The earliest presentation on transmission line transformers was by Guanella in 1944

The Yagi antenna consists of a single 'feed or driven element, typically a dipole or a folded dipole antenna