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LoRa Coverage Link Budget Calculator
x402
LoRa Coverage Link Budget Calculator is a paid API for AI agents from iot.halowerk.com, paid per call via x402, $0.003/call, status unknown (last checked 2026-09-14).
Computes estimated LoRa receive power and link margin using free-space path loss at 1m, a caller-supplied path-loss exponent, antenna gains, and receiver sensitivity.
Price / call$0.003
Success—
StatusUnknown
How this service works
Computes free-space loss at one metre, applies a caller-supplied path-loss exponent over distance, then reports estimated receive power and margin against receiver sensitivity. This planning estimate does not model terrain, Fresnel obstruction, interference, antenna mismatch or regulatory duty cycle.
Output
Returns the estimated received signal power in dBm at the specified distance, the total path loss in dB, the free-space path loss at 1 metre, and the link margin in dB relative to the specified receiver sensitivity. A positive margin indicates the link is viable; a negative margin indicates insufficient signal.
Example use cases
Smart agriculture sensor range check
“I'm deploying soil moisture sensors across a 4 km stretch of farmland using LoRa at 915 MHz. The transmitters run at 20 dBm, I'm using a path-loss exponent of 3.5 for open rural terrain, both antennas are 2 dBi, and my gateway sensitivity is -137 dBm. Can you calculate the estimated receive power and link margin?”
Urban LoRaWAN gateway coverage planning
“We're placing a LoRaWAN gateway in a dense urban area and need to check coverage for sensors up to 1.2 km away at 868 MHz. TX power is 14 dBm, path-loss exponent is 4.0 for urban conditions, TX antenna gain is 5 dBi, RX gain is 3 dBi, 5 dB miscellaneous losses, and receiver sensitivity is -130 dBm. What's the link margin?”
Long-range LoRa link feasibility check
“Can a LoRa node at -3 dBm TX power on 433 MHz reach a gateway 8 km away in a semi-rural setting? Use a path-loss exponent of 3.0, both antennas at 0 dBi, 2 dB of cable loss, and assume receiver sensitivity of -134 dBm. I need to know if the link is viable.”
Technical details
Endpoint
POSThttps://iot.halowerk.com/v1/lora-coverageWhen to prefer
Use this endpoint when you need a fast, analytical link budget estimate for a LoRa radio link given known RF parameters, without access to terrain data or a full RF propagation simulator. It is ideal for early-stage IoT network planning, sensor deployment feasibility checks, and rapid what-if analysis on antenna gain, path-loss exponent, or TX power. Do not use it when high-accuracy coverage predictions incorporating terrain profiles, building attenuation, or multipath fading are required.
Side effects
- distance_km or frequency_mhz out of allowed range returns validation error
- path_loss_exponent outside 1–8 causes rejection
- receiver_sensitivity_dbm above 0 dBm is invalid and rejected
- Missing required fields return schema validation errors
- Results are planning estimates only — real-world terrain, Fresnel zones, interference, and regulatory limits are not modelled
Input
Schema · Request body
| Field | Type | Description |
|---|---|---|
| distance_km | number | |
| tx_power_dbm | number | |
| frequency_mhz | number | |
| path_loss_exponent | number | |
| rx_antenna_gain_dbi | number | |
| tx_antenna_gain_dbi | number | |
| miscellaneous_loss_db | number | |
| receiver_sensitivity_dbm | number |
Tags
x402
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