# Bidirectional Telemetry > ⚠️ **This documentation is outdated!** A current version is available at [openhdfpv.org](https://openhdfpv.org) > > [📖 **View Updated Version of This Page** →](https://openhdfpv.org) *** Bi-directional telemetry allows you to send messages from your Ground Station Software to the Flight Controller connected to the Air SBC. ### Enabling bidirectional telemetry By default bidirectional telemetry is disabled, to enable it simple set the following options in the config file or enable them in the QOpen.HD settings. ``` TELEMETRY_UPLINK=mavlink TELEMETRY_TRANSMISSION=wbc RC=mavlink ``` In order for this to work please make sure you have [connected ](/open-hd/master/hardware/wiring.md#flight-controller)your Flight Controller properly. --- # Agent Instructions: Querying This Documentation If you need additional information that is not directly available in this page, you can query the documentation dynamically by asking a question. Perform an HTTP GET request on the current page URL with the `ask` query parameter: ``` GET https://openhd.gitbook.io/open-hd/master/advanced-setup/bidirectional-telemetry.md?ask= ``` The question should be specific, self-contained, and written in natural language. The response will contain a direct answer to the question and relevant excerpts and sources from the documentation. Use this mechanism when the answer is not explicitly present in the current page, you need clarification or additional context, or you want to retrieve related documentation sections.