Trimble Outdoors SPSX51 User Manual

2     Features and Functions

22     SPSx51 Modular GPS Receivers User Guide

Choice of external GPS antenna for base station or rover operation

Attached or external radio antenna for rover or high-gain base station operation

Small, lightweight design – 1.65 kg (3.64 lbs) receiver only, including the battery; 
4 kg (8.82 lbs) complete system weight (rover including controller and rod)

Permanent/semi-permanent and mobile quick setup base station capability

Backpack, belt, rod, truck, and marine vessel mounting options for rover 
applications

Capable of all site measurement and stakeout operations within radio or cellular 
coverage

Easy-to-use menu system for rapid configuration and status checking

AutoBase technology for rapid and automated repeated daily base station 
setups

Can broadcast corrections through multiple radio links from one base station, 
for example, through an internal 450 MHz radio and an external 900 MHz radio 
or over the Internet.

Rugged, weatherproof construction with an IP67 environmental rating

–40 °C to +65 °C (–40 °F to +149 °F) operating temperature range

9.5 V to 28 V DC input power range, with over-voltage protection

Capable of rover operation within a VRS (Virtual Reference Station) network

Moving baseline and heading capability when any SPSx51 receiver (excluding 
the SPS551H or SPS751 Basic receiver) is combined with any SPSx51 or SPS551H 
Add-on receiver.

RoHS compliant

1 Pulse-per-second (1PPS) output

Unrestricted operational range for rovers and grade control systems

Base station and rover operation in a single receiver

Integrated transmit/receive radio

5 Hz, 10 Hz, or 20 Hz measurement update rate (10 Hz maximum in Heading 
mode)

Base station-free rover capability within a VRS network

Base station-free rover capability using OmniSTAR services