LQI is defined in the G3 Specification as: SNR (dB)= LQI*0.25 -10
You can use following guideline for LQI and channel quality:
| LQI Range | SNR (dB) | Typical Modulation | Channel Quality |
|---|---|---|---|
| 0 - 48 | <2 | ROBO | Bad |
| 49 - 52 | 2 - 3 | ROBO/BPSK | Weak |
| 53 - 60 | 3 - 5 | BPSK | Medium |
| 61 - 76 | 5 - 9 | QPSK | Good |
| 77 - 108 | >9 | 8PSK | Excellent |