Trimble CAT MS975 Grade Control GNSS GPS GLONASS Base Receiver

The Trimble MS975 is a GNSS smart antenna for machine control: antenna, receiver electronics and vibration isolation packed into one fully sealed housing that mounts on a machine mast or serves as a site base station. Its 220 tracking channels follow up to 44 satellites, covering GPS L1C/A, L2C, L2E and L5 with SBAS support (WAAS, EGNOS, MSAS, QZSS) and GLONASS, Galileo and BeiDou available as tracking options — this unit is listed as a GPS/GLONASS receiver. Trimble rates RTK positioning at 8 mm + 0.5 ppm horizontal and 15 mm + 0.5 ppm vertical.

Interfaces run through a single sealed 16-pin Amphenol bayonet connector carrying two J1939 CAN buses and two RS-232 serial ports, on a 9-32 V DC supply drawing 5 W nominal. This is the Cat-branded variant used across Trimble GCS900 and Caterpillar grade control installations; the listing covers the MS975 receiver pictured, offered as a base receiver per the title.

Condition: Used, tested, as listed. The photographs are of the actual unit you’ll receive, covered by our warranty.

Orders are professionally packed and dispatched fast, fully tracked. Heavy items ship on protected freight. Every unit carries our warranty from delivery.