A searchable database of radio transmissions - who is on
the air, where from, when, and in what language.
What is in the database
Roughly 40,500 transmission records covering 33,200 stations in more than
240 countries and territories, from 40 kHz up to 2.4 GHz - VLF, LF, MW, HF, VHF, UHF and microwave. Every
record holds the frequency, the station, its country and language, the
target area, the schedule in UTC and a category.
Categories covered
Commercial broadcast — international and national outlets on LW, MW, shortwave and FM
Utility — point-to-point and service transmissions
Numbers stations — encrypted shortwave broadcasts
Amateur radio — ham allocations and repeaters
Aviation — aeronautical communications
Time signal — time and frequency standard stations
Maritime — naval and maritime communications
Military, emergency and satellite channels
What the app does
Search by frequency, callsign, station name or location, and filter by country and category
Open a station to see its transmitter details, schedule and coverage
Read current HF propagation conditions band by band
See the great-circle path and grey line on a map, with distance from your position
Save favourites into your own categories with a free account