# Telemetry Wifi

WiFi telemetry enables MAVLink communication between a WiFi radio on a vehicle and a GCS.\
WiFi typically offers shorter range than a normal telemetry radio, but supports higher data rates, and makes it easier to support FPV/video feeds. Usually only a single radio unit for the vehicle is needed (assuming the ground station already has WiFi).

PX4 supports telemetry via UDP and Wifi. It broadcasts a heartbeat to port 14550 on 255.255.255.255 until it receives the first heartbeat from a ground control station, at which point it will only send data to this ground control station.

Compatible WiFi Telemetry modules include:

* [ESP8266 WiFi Module](https://px4.gitbook.io/px4-user-guide/drone_parts/peripherals/telemetry/telemetry_wifi/esp8266_wifi_module)
* [ESP32 WiFi Module](https://px4.gitbook.io/px4-user-guide/drone_parts/peripherals/telemetry/telemetry_wifi/esp32_wifi_module)
* [3DR Telemetry Wifi](https://px4.gitbook.io/px4-user-guide/drone_parts/peripherals/telemetry/telemetry_wifi/3dr_telemetry_wifi) (Discontinued)
