mesh

Calculates LoRa receiver sensitivity from spreading factor, bandwidth, and noise figure using the Semtech SX1276 datasheet SNR thresholds. Computes the noise floor from thermal noise density (-174 dBm/Hz), channel bandwidth, and receiver noise figure, then adds the spreading-factor-dependent minimum demodulation SNR. Returns sensitivity in dBm, noise floor, required SNR, and thermal noise reference. Essential for link budget planning in LoRaWAN and Meshtastic networks. Feeds sensitivity_dbm to link_budget and lora_range_estimate for end-to-end coverage analysis.

post/api/lora_sensitivity

Request

  • Base URL: https://calc.engineer
  • URL: https://calc.engineer/api/lora_sensitivity
  • Auth: none declared

Request body

sfnumber

LoRa spreading factor (7-12). Higher SF = better sensitivity but slower data rate.

bw_khzunknown
noise_figure_dbnumber

Receiver noise figure in dB. Typical LoRa radio NF is 6 dB (SX1276).

Response

Computed result for lora_sensitivity

toolstring required
versionstring required
computed_atstring date-time required

Changes

No recorded changes to this operation across all 1 revision of this API.