Texas Packet Radio Society
- TPRS invented TexNet, a network using a combination of wireline and wireless technology to link hams in most of the major population centers in Texas, Oklahoma, Arkansas, Missouri
HF Propagation Primer
- Flash Movie describing HF (shortwave) radio propagation to beginners. Very helpful aid in understanding.
How to use geophysical alert broadcasts
- User's Guide is primarily based on information made available by the United States National Oceanic and Atmospheric Administration's Space Environment Services Center in Boulder, Colorado.