Fence antenna technology and expanded channel support are offered in Topcon Positioning Systems' GR-5 GNSS receiver. The GR-5 provides signal tracking sensitivity and multipath rejection in a compact and lightweight package. Multiconstellation tracking and 216 channels are offered for job-site precision, and the GR-5 can perform most tasks for surveying, engineering, or construction. A rugged I-beam design withstands a 2-m (6.6-ft) drop onto concrete. Other features include an accurate engine with position updates up to 100 Hz; integrated dual communication system with multiple radio and cellular combinations; removable storage card; extended battery life; IP66 dustproof and waterproof rating; shock and vibration tolerance; a pole mounting system; Bluetooth connectivity; and precision-tuned, micro-centered antenna with full wave tracking.