Topcon's GR-3 system, designed to withstand a fall on a range pole (2 meters), comes with a "bulletproof" warranty to back it up. Seventy-two universal channels can track up to 36 satellites simultaneously, all positioning satellites, generating any signal, any time, 24/7. G3 chip receives all existing signal plus signals from planned satellite launches in the future.
Topcon's Satellite Receiver
