HolyBro H-RTK M8P Base ModuleThis H RTK M8P module comes with a high gain antenna making it ideal for use as your RTK base station. The antenna itself can be mounted onto a 5 8" screw head as found on most survey tripods. This antenna gives you the highest accuracy and speed when it comes to your RTK needs. Holybro_H RTK_M8P_GNSS_Spec_V1. 2 Specification Name: H RTK M8P Base Application: Base station only GNSS: GPS L1, GLONASS L1, BeiDou L1 Antenna Peak Gain (Max): 5. 5dBi LNA