WSPR Map: Who Heard Me?
Enter a callsign to see every WSPR station that heard it, on a live map.
Try:
Line colour = signal-to-noise ratio: 0 dB or better, −1 to −10, −11 to −20, below −20. Spot data: wspr.live (WSPRnet database), refreshed every 10 minutes.
Listen and decode with NyxScope
Receiving WSPR or FT8 with an RTL-SDR? NyxScope also decodes ADS-B, AIS, APRS, pagers and trunked radio. NyxScope is a free multi-protocol SDR scanner for Windows from ICBizLabs, the team behind kilaz.com, with a 30-day trial of its licensed features.
About this tool
What is WSPR?
Weak Signal Propagation Reporter: stations send tiny two-minute beacons (often under a watt) and receivers around the world upload what they decode. It's the easiest way to see where your antenna and the bands actually reach.
Reading the map
Each line is the best spot from one station, drawn along the great-circle path. Strong signals are red and orange; weak but decoded ones are green and blue. WSPR decodes down to about −30 dB SNR.
Tip
Compare bands and times of day: the same antenna can reach Europe on 20 m at noon and only nearby states on 40 m at night.