User Manual

2 Overview
6 SNB900 Radio Modem User Guide
2.1 Introduction
The rugged Trimble® SNB900 radio modem is ideal for harsh
environments, such as those associated with construction, seismic, and
mining surveys. It is convenient and versatile: When used with a
Trimble rover GPS receiver that has an internal radio modem, the
SNB900 can be used to establish a robust wireless data broadcast
network for real-time differential and real-time kinematic GPS
applications.
2.2 Features
The SNB900 has the following standard features:
•900MHz ISM
• +30 dBm
• 902–928 MHz frequency hopping on 50 channels (USA)
• High-speed wireless data rate
• Interfaces with Trimble survey-grade GPS receivers
• Supports up to two repeaters in a single network, three if an
access point is used
• Rugged, weatherproof construction
• Two-line, 16-character VFD display
• Compatible with Trimble CMR+™ and RTCM SC-104
• Operational parameters configured using the WinFlash utility, a
handheld controller, or the front panel
• Can be configured as a base, repeater, or rover
• Compatible with SNR900 and SiteNet™ 900 external radios,
and Trimble 5700 and 5800 internal radios
• When connected to a Trimble Network Router (TNR) provides
two-way IP connectivity to machine grade control systems.