# Holybro H-RTK F9P GNSS
The Holybro H-RTK F9P GNSS (opens new window) is an multi-band high-precision RTK GNSS System series launched by Holybro. This family is similar to the H-RTK M8P series, but uses multi-band RTK with faster convergence times and reliable performance, concurrent reception of GPS, GLONASS, Galileo and BeiDou, and faster update rate for highly dynamic and high volume applications with centimeter-accuracy. It uses a UBLOX F9P module, a IST8310 compass, and a tri-colored LED indicator. It also has an integrated safety switch for a simple and convenient operation.
There are three models of Holybro H-RTK F9P to choose from, each with different antenna design to meet different needs. Refer to Specification and Model Comparison section for more details.
Using RTK allows PX4 to get its position with centimeter-level accuracy, which is much more accurate than can be provided by a normal GPS.
- H-RTK F9P (Holybro Website) (opens new window)
- H-RTK Accessories (Holybro Website) (opens new window)
RTK setup and use on PX4 via QGroundControl is largely plug and play (see RTK GPS for more information).
# Wiring and Connections
All H-RTK GNSS models come with a GH 10-pin connector/cable that is compatible with Pixhawk 4.
Note The cables/connectors may need to be modified in order to connect to other flight controller boards (see Pin Map below).
# Pin Map
# Specification and Model Comparison