{
  "$schema": "https://json-schema.org/draft/2020-12/schema",
  "$id": "https://www.calculatorx.com/schemas/electrical.rf.fspl.input.json",
  "title": "Free-space path loss — input",
  "type": "object",
  "additionalProperties": false,
  "properties": {
    "d_m": {
      "type": "number",
      "exclusiveMinimum": 0,
      "description": "Distance (m)"
    },
    "f_Hz": {
      "type": "number",
      "exclusiveMinimum": 0,
      "description": "Frequency (Hz)"
    },
    "Gt_dBi": {
      "type": "number",
      "description": "Transmit antenna gain (dBi); default 0"
    },
    "Gr_dBi": {
      "type": "number",
      "description": "Receive antenna gain (dBi); default 0"
    }
  },
  "required": [
    "d_m",
    "f_Hz"
  ],
  "description": "Compute Friis free-space path loss from distance and frequency, with optional antenna gains Gt/Gr in dBi. (calculation_version 1.0.0)"
}