Other
HF Links
- Introduction
to Propagation (highly recommended)
- Estimate of Effective Sunspot Numbers (SSNe)
- Comparison of Sunspot-Number Indices
- ARRL Home
- ARRL Call Sign & Place Locator
- ARRL Grid Squares
- CQ
Magazine
- NW7US's
HF Radio Site
- AC6V's
Amateur Radio Site
- WM7D's
Callsign Database
- DXZone
Amateur Radio Guide