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• Fixed a crash that could happen on foldable phones when folding or unfolding the device while a receiver was open
Listen to public WebSDR receivers worldwide — waterfall, decoders, DX spots
WebSDR Explorer lets you browse and listen to public WebSDR (web-controlled software-defined radio) receivers from around the world, right from your phone, and decode digital modes on the go. LISTEN • Live waterfall with an optional spectrum graph — see the HF/VHF/UHF band in real time, tap or drag to tune • Over 100 public WebSDR servers worldwide, individually verified, with live ping • AM, USB, LSB, CW, FM, DSB and AM-Sync demodulation (where supported by the server) • Adjustable bandwidth, squelch, auto notch, noise reduction, gain/AGC control and an audio equalizer • Two VFOs (A/B), channel buttons, Ham Band presets, zoom and pan • S-Meter with a live signal plot, and a "who is listening where" view • Background playback, scheduled listening, a home screen widget and a Quick Settings tile • Audio recording to a WAV file on your device DECODE ON YOUR PHONE • FT8, FT4, FT2, WSPR and JTTY, with the country of each station and a map of the stations you heard • CW, RTTY, PSK31 and NAVTEX decoded as text • SSTV pictures and WEFAX weather charts, drawn line by line • Decode History you can search, filter and export, and Callsign Alerts for the stations you hunt • The decoders run on your device, so they work on every server DX AND COMMUNITY • DX Cluster spots shown on the waterfall, and you can post your own spot • Callsign lookup on QRZ.com or HamQTH • Station labels from the server or the EiBi shortwave schedule — tap a name to tune • Chatbox and Logbook (on servers that support them) • Frequency bookmarks and favorites MAKE IT YOURS • Reorderable, pinnable and hideable cards, with one-tap layouts: Listening, Digital modes and DX hunting • Landscape view, light and dark themes WebSDR receivers are operated independently by amateur radio clubs, universities and hobbyists around the world — this app is a convenient mobile front-end for browsing and controlling them, not a radio of its own. An internet connection is required; no radio hardware is needed. WebSDR Explorer does not require an account and contains no advertising. Your favorites, bookmarks, decode history and settings stay on your device. See the full Privacy Policy for details.