Topcon Global Navigation Satellite System (GNSS)

Global Navigation Satellite System (GNSS) receivers that are part of the Topcon GR-3 product family are now available with an internal Code Division Multiple Access (CDMA) cellular modem option. This allows the use of signals from two major cell phone providers - Verizon and Sprint. The new receiver kits are available with both single- and dual-mode UHF receivers. In 2006, Topcon introduced the fully integrated GR-3 system, including receiver, batteries, antenna and communications.