Johnson's Techworld

Why is the GreenCube (Italy-Oscar IO-117) Called So? Most of the Ham Radio operators interested in satellite communications would be knowing GreenCube IO-117 as a Medium Earth Orbit

What is Polarization of an Antenna? Polarization of an antenna is the direction of electric field produced by the antenna. This would determine the direction of transmission and

What is an Isotropic Antenna and dBi gain? Isotropic Antenna is a theoretical antenna which has a perfect spherical radiation pattern, which is never practically achieved in any

What are tinySA Basic and tinySA Ultra? Recently I had described Radio Frequency interference in my VHF radio at home noted during evening times, but not in the

J Pole Antenna Voltage, Current and Radiation Pattern J pole antenna is a vertical omnidirectional antenna popular among Ham Radio operators for 2m and 70 cm operations. As

What is a Slim Jim Antenna in Ham Radio? Slim Jim antenna, as the name implies, has a very slim design and hence very little wind loading. JIM

What is a Random Wire Antenna in Ham Radio? Random wire antenna, as the name implies, is a random length of wire suspended high above the ground, usually

Learning Morse Code for Ham Radio Made Easy! Many would think that learning Morse Code is the toughest thing in Ham Radio. Not at all, once you take

What is FT4 in Ham Radio? FT4 is a digital mode of communication in Ham Radio meant for contesting, developed by Joe Taylor, K1JT and Steve Franke, K9AN,