UberSDR UberSDR Instance Directory

Public SDR Receivers with Real-Time Band Conditions
📊 SNR History 🔊 Signal Finder 📡 Digital Spots Map 📻 CW Skimmer Map
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🔍 Filter Instances

Partial match supported
Requires location access
Minimum session time (minutes)
Minimum free slots
HF band dynamic range (1.8-30 MHz)

📡 Band Conditions (Minimum Quality)

Only instances with noise floor data will be filtered by band conditions
📻 Audio Preview Frequency
14.100 MHz
USB
0 5 10 15 20 25 30
MHz
Click on markers with 🔊 icon to preview audio • Bandwidth: 2.7 kHz • Mode auto-selected (LSB < 10 MHz, USB ≥ 10 MHz)
🗺️ Receiver Locations
POOR (SNR < 6 dB)
FAIR (6-20 dB)
GOOD (20-30 dB)
EXCELLENT (SNR > 30 dB)