The Calian TW165B is a professional-grade full GNSS band signal splitter that allows a single antenna to feed up to four receivers. It supports GPS/QZSS, GLONASS, BeiDou, Galileo, NavIC, and L-Band correction services, ensuring broad compatibility with modern GNSS systems. The antenna port is located on the front, with all four receiver ports arranged on the rear for convenient installation.

Designed for critical applications in safety, security, timing, and infrastructure, the TW165B addresses reliability and fault tolerance, overcoming limitations of earlier splitters that depended on a single powered receiver. Its Smart Power design accepts input from all attached receivers, prioritizes Port #1, and automatically switches to other ports if necessary, ensuring uninterrupted operation. In the event of an antenna failure, the device maintains low current draw across all outputs, signaling a fault without compromising connected receivers.

The TW165B delivers best-in-class performance in noise figure, isolation, and linearity. Housed in a robust, compact, and waterproof IP67 aluminum enclosure, it is resistant to corrosion and built for demanding environments. Connector options include SMA, TNC, or type-N, and the splitter provides 10 dB gain over splitting loss. Unused ports should be terminated with a 50 Ohm load to maintain optimal performance.