Jasper · LoRaWAN Propagation Study

Click on the map to place a gateway.

Configured for US915 (902–928 MHz ISM, FCC Part 15.247). Click the map to add gateways, or load a KMZ/KML of sites. The tool pulls public terrain (AWS Terrarium DEM), runs a knife-edge diffraction path-loss model from every gateway, and shades the combined (best-server) coverage.

Reliable Coverage Edge

-90 dBm

Gateways

Sites

None yet — click the map or load a file.

Selected gateway

Name

Antenna height AGL m

TX power (EIRP-ish) dBm

Gateway ant. gain dBi

Ground elevation —

◆ Sensors

Sites

None yet — add sensors or load a file.

Reference points only — they don’t affect coverage.

Selected sensor

Name

Parameters

Sensor height AGL m

Sensor ant. gain dBi

⚙ Other Info

Radio & threshold

Frequency MHz

Bandwidth

Noise figure dB

SNR threshold dB

LoRa demod floor ≈ −7.5 (SF7) to −20 (SF12) dB SNR.

Study area & quality

Max radius km

Radials

Use terrain

Legend — predicted RSSI (dBm)

Model: free-space path loss + ITU-R P.526 single knife-edge diffraction over the terrain profile, 4/3-earth curvature. SNR = RSSI − thermal noise floor (−174 + 10·log₁₀(BW) + NF). Terrain: AWS Terrain Tiles. This is a planning estimate, not a guarantee — it ignores clutter (buildings, foliage), multipath, and rain. Validate critical links in the field.