Hits
Antenna Zeppelin
- Electrically the Zepp antenna has two parts, a half-wave radiator end-fed by a quarter-wave matching section connected to the radio
post 23 Dec 2024
Wire & Random Antenna Links →
The W8JK antenna design
Invented by Dr. John D. Kraus, W8JK, in 1937, it uses two dipoles, both driven and out of phase with each other, to create a directional antenna no front to back ratio, though that works on six bands 20-17-15-12-10-6 meters and as a top loaded vertical on 40 meters
Using half square antenna for low band
A simple modification to a dipole wouldbe to add two λ/4 vertical wires, one at eachend, this is a half-squareantenna. The antenna can be fed at one cor-ner
Welcome to the Folded Dipole
A variation of the dipole is an antenna called a folded dipole. It radiates like a dipole but sort of looks like a squashed quad
An End Fed Inverted Monoband Vee
An End Fed Inverted Monoband Vee has a low impedance point around 1/4 wave away from ground, and the multiples of 1/4 wave on the feed side
121
Invented by Dr. John D. Kraus, W8JK, in 1937, it uses two dipoles, both driven and out of phase with each other, to create a directional antenna no front to back ratio, though that works on six bands 20-17-15-12-10-6 meters and as a top loaded vertical on 40 meters
A simple modification to a dipole wouldbe to add two λ/4 vertical wires, one at eachend, this is a half-squareantenna. The antenna can be fed at one cor-ner
A variation of the dipole is an antenna called a folded dipole. It radiates like a dipole but sort of looks like a squashed quad
An End Fed Inverted Monoband Vee has a low impedance point around 1/4 wave away from ground, and the multiples of 1/4 wave on the feed side
PSION Greyline Clock PSION Greyline Clock v. 1.0 is a UTC/Local clock showing sunlight/darkness area on the world map
Radioassistance Radioassistance E Kenwood Dealer, vendita ricetrasmittenti, antenne, parti di ricambio, elettronica
SunCalc SunCalc - sunrise, sunset, shadow length, solar eclipse, sun position, sun phase, sun height, sun calculator, sun movement, map, sunlight phases, elevation, Photovoltaic