RF Power Recommendations¶
JTXMesh
Proper RF power improves mesh health and reduces interference.
General Rule¶
Use the lowest power that maintains reliable links.
More power does NOT mean better performance.
Recommended TX Power (915 MHz LoRa)¶
| Node Type | Environment | TX Power |
|---|---|---|
| Indoor Fixed | Typical home | 17–20 dBm |
| Outdoor Fixed | Roof / mast | 14–17 dBm |
| Mobile | Vehicle / portable | 14–17 dBm |
| Dense Node Area | Many nearby nodes | 10–14 dBm |
Antenna Gain Guidance¶
| Antenna Gain | Recommended TX Adjustment |
|---|---|
| 0–2 dBi | No change |
| 3–5 dBi | Reduce TX by ~3 dB |
| 6+ dBi | Reduce TX significantly |
Avoid¶
- Max power by default
- “Loud” nodes dominating airtime
- Power increases to fix bad antenna placement
Better Than More Power¶
- Higher antenna placement
- Clear line of sight
- Quality coax and connectors