RF Calculator

LoRa Link Budget Calculator

Estimate LoRa received power and link margin.

Formula and explanation

This calculator applies a practical RF engineering formula and returns the result instantly.

RX dBm = TX + Gtx + Grx - FSPL - losses

Important note

RF calculations are estimates. Verify final systems with real measurements, datasheets and installation tests.

Result will appear here.

People also ask

Are RF calculator results exact?

No. They are engineering estimates. Real RF performance depends on antenna placement, cable loss, PCB layout and environment.

Why can measurements differ?

Connectors, coax, ground plane, enclosure materials, reflections and interference can change real results.