rf

Compute a full RF link budget from transmitter power, frequency, distance, and antenna gains. Calculates EIRP, free-space path loss (ITU-R P.525), received power at the receiver, and link margin relative to an optional receiver sensitivity threshold. Use this to determine whether a wireless link closes with adequate margin. Accepts output from noise_figure_cascade and feeds into snr_margin for full receive-chain analysis.

post/api/link_budget

Request

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

Request body

tx_dbmnumber required

Transmitter output power in dBm

freq_mhznumber required

Carrier frequency in megahertz (MHz)

dist_kmnumber required

Link distance in kilometres

tx_gain_dbinumber

Transmit antenna gain in dBi (default 2.15 for a half-wave dipole)

rx_gain_dbinumber

Receive antenna gain in dBi (default 2.15 for a half-wave dipole)

rx_sensitivity_dbmnumber

Receiver sensitivity in dBm; when provided, link margin is calculated

Response

Computed result for link_budget

toolstring required
versionstring required
computed_atstring date-time required

Changes

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