RadCom Article on Noise Sources from 1 to 30MHz
The article discusses the different types of noise - galactic, atmospheric and man-made and shows how they effect reception on the MF and HF Bands.
LED Noise Lecture - Notes and Slides
LED noise is one of many EMC problems that beset Amateur Radio. Other noise sources include broadband, solar panels and cheap domestic appliances imported from the far east. Small active (receive only) antennas offer one way to reduce EMC at home QTHs. Most up-market transceivers have separate receive only inputs and some others have simple converter kits.
Files relating to Open and Shielded Active Loops
Files relating to Magnetic Loops
Files relating to RF Switching
RSGBtech-The Listening Project Discussion
For comments and queries please contact Keith Lockstone (M0KIL) via klockstone@yahoo.co.uk