I want to share things I find useful. This would include "bookmarks", but I may host some various useful files and gadgets

I am building a personal bookmark system that I will share here...

Ham Radio

PSK Automatic Propagation Reporter. Reception Reports
An interactive world map, that shows automatic reports of received digital HF modes
VOACAP Online - professional-grade high-frequency (3-30 MHz) point-to-point propagation predictions
Free web based tool to predict HF propagation for between different locations, with specified antenna, power, and mode.
by Jim Brown K9YC - RFI-Ham.pdf
Troubleshooting EMI/RFI issues
A guide to baluns
HF Antennas Especially stealth models
An article on HF Antennas Especially stealth models for those in an HOA.