UberSDR Instance Directory
Public SDR Receivers with Real-Time Band Conditions
📊 SNR History
🔊 Signal Finder
🗺️ Listener Map
🏆 Top Instances
🔊 Smart Listen
🧩 Widgets
📢 Hear Me?
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⚡ Compact
📋 Expanded
📻
MHz
USB
☀️ Space Weather Conditions
📡 Forecast (Next 24 Hours)
Solar Flux
--
SFU
K-Index
--
--
A-Index
--
Propagation
--
☀️ Day
🌙 Night
🔍 Filter Instances
Reset All
🔎 Search
Partial match supported
🌍 Country
All Countries
Filter by country
📏 Max Distance (km)
Requires location access
📻 Bandwidth
48 kHz
96 kHz
192 kHz
✨ Features
CW Skimmer
Digital Decodes
Noise Floor
Chat
CORS
Rotator
DSP
GPSDO
🧩 Addons
Must have all selected
🕐 Session Limit
Unlimited Only
Minimum session time (minutes)
👥 Available Slots
Minimum free slots
📊 Min SNR (dB)
HF band dynamic range (1.8-30 MHz)
📡 Status
Online Only
Antenna Only
☀️ Day/Night
Daylight Only
Night Only
📡 Band Conditions (Minimum Quality)
160m
Any
Fair+
Good+
Excellent
80m
Any
Fair+
Good+
Excellent
60m
Any
Fair+
Good+
Excellent
40m
Any
Fair+
Good+
Excellent
30m
Any
Fair+
Good+
Excellent
20m
Any
Fair+
Good+
Excellent
17m
Any
Fair+
Good+
Excellent
15m
Any
Fair+
Good+
Excellent
12m
Any
Fair+
Good+
Excellent
10m
Any
Fair+
Good+
Excellent
Only instances with noise floor data will be filtered by band conditions
Sort:
📏 Distance
👥 Listeners
📊 SNR
🔍
✕
🗺️ Receiver Locations
Show Callsign Labels
📻 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
Sort:
📏 Distance
👥 Listeners
📊 SNR
POOR (SNR < 6 dB)
FAIR (6-20 dB)
GOOD (20-30 dB)
EXCELLENT (SNR > 30 dB)
Noise Floor Details
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SSB Predictions (200W)
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Instance UUID
×
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