Trimble External GNSS Antenna Cable Improve GNSS performance in challenging environments by connecting a compatible external GNSS antenna to your Trimble TDC650 or TDC150 handheld. This genuine 1.5 m (4.9 ft) TNC-to-Lemo antenna cable provides a reliable connection for pole-mounted external antenna setups, including use with the Trimble Zephyr 3 antenna. Key Features 1.5 m (4.9 ft) external antenna cable for flexible pole-mounted GNSS configurations. TNC male to Lemo connection for compatible handhelds and external GNSS antennas. Supports external antenna use to improve and maintain GNSS positioning in urban, obstructed, and other challenging environments. Genuine Trimble antenna cable designed for dependable field use. Compatible With Trimble GNSS Handhelds: TDC650 , TDC150 Spectra Geospatial GNSS Handhelds: SP20 Trimble External GNSS Antennas: Zephyr 3