
[MISCELLANEOUS]
WWRO World Wide Radio Organisation
Oscar Kilo International DX Group
Gruppo Radio Italia Alfa Tango
30DX401 Christian (Invoker Team)
The Ultimate Guide to 11 Meter CB Antennas
[DX & PROPAGATION]
IOTA islands base (KMZ files for Google Earth)
HF (high frequency) and VHF Radiowave Propagation
DX Atlas: Amateur Radio Software
[SOLAR & TERRESTRIAL ACTIVITY]
NASA SDO Solar Dynamics Observatory
SIDC - Solar Influences Data Analysis Center
NASA Solar Data Analysis Center
DXLC.com Solar Terrestrial Activity Report
GONG - Farside seismologic images of the sun