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LoRa Link Budget
Adjust spreading factor, bandwidth, power, and band plan to see how link margin, range, and throughput move together.
SF7
125 kHz
14 dBm
868 MHz
Max Range
368.2km
Data Rate
5.5kbps
Airtime
33.0ms
10-byte payloadSensitivity
-124.5dBm
Link Budget
142.5dB
SNR Required
-7.5dB
Spreading Factor: SF7
Spreading Factor controls how much the signal is "spread" across time. Higher SF values such as SF12 reach farther, but they carry data much more slowly. Lower SF values such as SF7 are faster, but they need a cleaner link. This is the main range-versus-throughput tradeoff in LoRa.
Adjust sliders to see real-time changes · Keys 1-4 to select parameter info
Drag sliders to adjust parameters