rf radiation

18 links

Delta Loop DX Antenna for 40 meters band - PD9Z
A monoband delta loop antenna for the 7 MHz This vertically polarized DX Antenna is ...

[ Hits: 433 | Votes: 3 | Rating: 6.33 ]

A very efficient half size 40 meter Vertical Antenna - Ray Ring
A vertical antenna project for the 7MHz made with some spare parts Based on a ...

[ Hits: 736 | Votes: 4 | Rating: 8.5 ]

Phased Array Antennas - YO3DAC
Phased array antennas are composed of multiple individual antenna elements that can have their phase ...

[ Hits: 82 | Votes: 0 | Rating: 0 ]

Detuning Towers
The goal of detuning is not to avoid resonance but rather to minimize re radiation ...

[ Hits: 815 | Votes: 1 | Rating: 10 ]
Antenna feed impedance
Article on antenna feed impedance and the importance of matching RF andtennas to feeders including ...

[ Hits: 430 | Votes: 1 | Rating: 10 ]

Enhancing Performance with W8JK/MOXON Antenna Variant - F5NPV
F5NPV introduces a variant of the W8JK antenna design employing the MOXON principle With extended ...

[ Hits: 183 | Votes: 0 | Rating: 0 ]

A Multi-band HF loop antenna - AB1KW
The multi band HF loop antenna a good performer on 80 and 40 10 meters ...

[ Hits: 11242 | Votes: 26 | Rating: 6.76 ]

Radiation and fields
Electric Fields, magnetic fields, electromagnetic fields, losses, fresnel zone, nearfield and farfield

[ Hits: 447 | Votes: 1 | Rating: 10 ]
Basics of antennas
The current the voltage the impedance the bandwidth the polarization and how the earth influences ...

[ Hits: 701 | Votes: 0 | Rating: 0 ]
Variations on a Dipole - AF7NX
Antenna patterns are all about interference Presentation on wire antennas for HF bands Dipoles horizontal ...

[ Hits: 98 | Votes: 0 | Rating: 0 ]

Understanding Antenna Gain in a Few Minutes - VE2XIP
A collection of videos on antenna gain and explanations of how some antenna designs may ...

[ Hits: 84 | Votes: 0 | Rating: 0 ]

Scientific Surplus
Buy sell and trade electronic and scientific instruments Oscilloscopes microscopes signal generators RF equipment short ...

[ Hits: 749 | Votes: 0 | Rating: 0 ]

4NEC2 antenna modeler - Arie ^pop
4nec2 is a completely free Nec2 Nec4 and windows based tool for creating viewing optimizing ...

[ Hits: 30107 | Votes: 131 | Rating: 7.32 ]

RF Radiation and Electromagnetic Field Safety
Preprinted from the 1997 ARRL Handbook for Radio Amateurs Thermal Effects of RF Energy Safe ...

[ Hits: 330 | Votes: 0 | Rating: 0 ]
RF Radiation and Electromagnetic Field Safety
ARRL page dedicated to RF Safety

[ Hits: 660 | Votes: 1 | Rating: 6 ]
RF Standards and Regulations - RF Safety Solutions
There are many different RF safety standards and regulations used throughout the world here are ...

[ Hits: 160 | Votes: 0 | Rating: 0 ]
RF Safety in Tower Climbing - RF Safety Solutions
The risks for exposure to significant levels of RF radiation is high for tower climebers ...

[ Hits: 192 | Votes: 0 | Rating: 0 ]
Magnetic Loop RF Safety - WV0H
Notes on the intensity of RF Field calculated on magnetic loop antennas The magnetic field ...

[ Hits: 858 | Votes: 3 | Rating: 4 ]