Path loss, received power, margin, maximum range and Fresnel clearance

Answeringour last check, 2026-10-31

2 of 2checks answered this week

264 msmedian answer time

$0.01listed price per call

$0.01price it asked us

Paid test badge: not yet. The checks above are free: we call the tool without paying and read the payment request it sends back. The Verified badge needs paid calls whose answers match the promised output, and nobody can buy a badge.

Endpoint

GET https://saylorinnovations.com/api/ham/link-budget

Category	Everything else
Provider host	saylorinnovations.com
Networks	eip155:137, eip155:42161, eip155:8453, solana:5eykt4UsFv8P8NJdTREpY1vzqKqZKvdp
Payment schemes	exact
Self-reported calls, 30 days	1 from 1 payers (the provider's figure, not ours)

Our checks, last 30 days

Day	Result	HTTP	Asked	Time
2026-10-31	valid payment request	402	$0.01	276 ms
2026-10-29	valid payment request	402	$0.01	252 ms

Example input (from the provider)

{
  "method": "GET",
  "queryParams": {
    "cable_loss_db": "1.5",
    "distance_km": "5",
    "fade_margin_db": "10",
    "frequency_mhz": "915",
    "rx_gain_dbi": "3",
    "rx_height_m": "3",
    "rx_sensitivity_dbm": "-127",
    "tx_gain_dbi": "3",
    "tx_height_m": "10",
    "tx_power_dbm": "20"
  },
  "type": "http"
}

Promised output schema (from the provider)

{
  "$schema": "https://json-schema.org/draft/2020-12/schema",
  "properties": {
    "input": {
      "additionalProperties": false,
      "properties": {
        "method": {
          "enum": [
            "GET"
          ],
          "type": "string"
        },
        "queryParams": {
          "properties": {
            "cable_loss_db": {
              "description": "optional total cable and connector loss, default 1 (query)",
              "type": "string"
            },
            "distance_km": {
              "description": "required link distance in km (query)",
              "type": "string"
            },
            "fade_margin_db": {
              "description": "optional wanted margin, default 10 (query)",
              "type": "string"
            },
            "frequency_mhz": {
              "description": "required frequency in MHz (query)",
              "type": "string"
            },
            "rx_gain_dbi": {
              "description": "optional receive antenna gain, default 0 (query)",
              "type": "string"
            },
            "rx_height_m": {
              "description": "optional receive antenna height, default 2 (query)",
              "type": "string"
            },
            "rx_sensitivity_dbm": {
              "description": "optional receiver sensitivity, default -120 (query)",
              "type": "string"
            },
            "tx_gain_dbi": {
              "description": "optional transmit antenna gain, default 0 (query)",
              "type": "string"
            },
            "tx_height_m": {
              "description": "optional transmit antenna height for the horizon, default 2 (query)",
              "type": "string"
            },
            "tx_power_dbm": {
              "description": "required transmit power in dBm (30 dBm = 1 W) (query)",
              "type": "string"
            }
          },
          "required": [
            "frequency_mhz",
            "distance_km",
            "tx_power_dbm"
          ],
          "type": "object"
        },
        "type": {
          "const": "http",
          "type": "string"
        }
      },
      "required": [
        "type",
        "method"
      ],
      "type": "object"
    },
    "output": {
      "properties": {
        "example": {
          "type": "object"
        },
        "type": {
          "const": "json",
          "type": "string"
        }
      },
      "required": [
        "type"
      ],
      "type": "object"
    }
  },
  "required": [
    "input"
  ],
  "type": "object"
}

This page as JSON