# RTK Source: [https://docs.qualcomm.com/doc/80-PK177-134/topic/rtk.html](https://docs.qualcomm.com/doc/80-PK177-134/topic/rtk.html) The RTK subsystem provides start/stop tracking APIs and a callback to receive **decimeter**-level positioning. - **[RTK subsystem APIs](https://docs.qualcomm.com/doc/80-PK177-134/topic/rtk_subsystem_api.html)** - **[RTK subsystem callback interfaces](https://docs.qualcomm.com/doc/80-PK177-134/topic/rtk_subsystem_callback_interfaces.html)** - **[RTK enums](https://docs.qualcomm.com/doc/80-PK177-134/topic/rtk_enums.html)** - **[Supporting classes and structs](https://docs.qualcomm.com/doc/80-PK177-134/topic/supporting_classes_and_structs_rtk.html)** - **[Example code](https://docs.qualcomm.com/doc/80-PK177-134/topic/rtk_example_code.html)** **Parent Topic:** [Location API](https://docs.qualcomm.com/doc/80-PK177-134/topic/location.html) Last Published: Nov 14, 2024 [Previous Topic Example code](https://docs.qualcomm.com/bundle/publicresource/80-PK177-134/topics/edgnss_example_code.md) [Next Topic RTK subsystem APIs](https://docs.qualcomm.com/bundle/publicresource/80-PK177-134/topics/rtk_subsystem_api.md)