Table of International Call Sign Series (Appendix 42 to the RR)
This table is kept up to date by ITU(International Telecomunication Union).
Questa lista è aggiornata da ITU(International Telecomunication Union).
DXCC List March 2016 Edition.
Current Entities Total: 339
DXCC Deleted List March 2016 Edition.
Deleted Entities Total: 62
These lists are kept up to date by ARRL (American Relay Radio Legue).
Official WAE Country List.
This table is kept up to date by DARC (Deutschen Amateur-Radio-Club e.V.).
Questa lista è aggiornata da DARC (Deutschen Amateur-Radio-Club e.V.).
Italian Prefix/Prefissi Italiani.
This list is kept up to date by ARI (Associazione Radioamatori Italiani).
Mappa delle zone radio italiane dal sito ARI Macerata
Italian call areas. Click to enlarge.
Predicted Sunspots Number and Radio Flux
Solar Cycle Progression.
NOAA (National Oceanic and Atmospheric Administration).
SWPC (National Space Weather Prediction Center).
Solar Cycle Prediction
NASA (National Aeronautics and Space Administration).