echolink

Echolink: Everything You Need to Know

Introduction Echolink is a VOIP (Voice Over IP) application that allows amateurs to connect to one another using the internet. It is similar to IRLP but allows users to connect via either radio or computer. … Read More

Screwdriver antenna

What Is Screwdriver Antenna?

A screwdriver antenna is a vertical antenna with a remotely-adjustable center-loading coil. Intended for mobile operation, it may be adjusted to cover any band from 10m to 75m. The antenna takes its name from the use of a … Read More

QSL

QSL: Everything You Need to Know

QSL means either “do you confirm receipt of my transmission” or “I confirm receipt of your transmission”. It can also mean “please send me a QSL card”. QSL is a Q-code. QSL Cards A QSL card … Read More

QRN

QRN: Everything You Need to Know

Strictly speaking, QRN means “noise from natural sources” as opposed to QRM which means “man-made noise”. The abbreviation QRN is often used in general terms to mean any noise that interferes with the propagation or … Read More