CALLSIGNS / FREQUENCY MANAGEMENT
Australian Radio Licences
FCC Licence Search
Japanese fixed station callsigns
New Zealand Radio Spectrum Management
UTILITY RELATED WEBSITES
Codar Ocean Sensors
Deutscher Wetterdienst fax and rtty schedules
Dxing.com Radio Intrigue
DX Info Centre (navtex, GMDSS, fax, time signal station schedules)
DX Radio
HF Link Net
Hugh Stegman’s Hurricane frequencies page
IARU Monitoring System
International Telecommunication Union (ITU)
Italian HF Archive
NIST Time and Frequency Division
Numbers & Oddities (numbers stations)
Planes and stuff
Priyom (numbers stations)
RadioReference UDXF portal
Radioscanner.ru (Russian)
Radio Sondes
Utility Planet
Virtual Museum of Radio Communications
World Meteorological Organization
BEACONS
HF Underground’s HF beacons page
Johan Veldhuis’ beacons pages
Martin Francis RNA, REU, RWW pages
NDB & Fishnet beacons
NDB List info site
Robert Connolly’s website
Wim van Beek’s beacons pages
LONG WAVE
Europäische Funk-Rundsteuerung
Hyperbolic Radionavigation Systems (J. Proc)
Longwave Club of America
Radio Teleswitching (UK)
Radio waves below 22 kHz
SAQ Grimeton
Trond’s ELF/VLF Frequency Guide
MILITARY
Army Field Manuals
Canadian Routing Indicators
DefenseLINK
Egyptian Navy on HF
MARS wikipedia
Noble Skywave
USCG Navigation Center
Russian T600 Frequencies and Callsigns
DIGITAL MODES, HARDWARE & SOFTWARE
Info, recordings and links
Wikipedia: List of software-defined radios
AERO
Aircraft Serial number search
AirNav Page
Collins ARINC - Atlantic
Collins ARINC - Pacific
ICAO HF Frequency Management South Pacific
International HF Aero Frequency List
NOTAM decoder
Open AIP - Worldwide Aviation Database
Open Sky network
Planespotters net
Scramble
Skybrary
SPACE & SATELLITES
DDiUS (check “sound from space”)
Encyclopedia Astronautica
Russian Space Web
Satellitenwelt
Space Daily
Space.com
Sven's Space Place
UHF Satcom
Visual Satellite Observer's Home Page
Zarya
MARITIME
Coastal Radio Communications
ITU MARS
KKL Washington State
List of Navtex stations
MRHS Operating Schedules
Navtex on DX Info Centre
NOAA Marine Forecasts
Sailmail
Sailmail primer (incl. Stations & frequencies)
Seefunker
Metservice New Zealand radio schedules
PROPAGATION
HF Propagation (RadioReference wiki)
hfradio.org - Propagation
KC2G propagation website
Propagation (qsl.net)
Proppy HF propagation prediction
Sunspot Watch
VOACAP Quick Guide
VOACAP Propagation Planner
VOACAP Software (HFWIN)
MORE LINKS
Broadcasting
Crypto
DX Publications
DX Clubs
Remote tunable receivers
Various
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