Trimble Unity Gain 430–450 MHz Whip Antenna The Trimble Unity Gain 430–450 MHz Whip Antenna (P/N 51870-30-50) is a genuine 0 dB UHF replacement antenna designed for compatible Trimble GNSS receivers and external data radios operating in the 430–450 MHz frequency range. Engineered for reliable radio communications and dependable field performance, this antenna is ideal as a replacement or spare for surveying, construction, and machine control applications. It features a durable whip design with an NMO connector for quick installation. Key Features Unity gain (0 dB) whip antenna optimized for 430–450 MHz UHF radio communications. NMO connector provides secure installation on compatible radios and antenna mounts. Supports dependable RTK correction transmission and reception for base and rover radio applications. Genuine Trimble antenna featuring durable, field-ready construction for long-lasting performance in demanding surveying and construction environments. Compatible With Compatible with Trimble and Pacific Crest external UHF data radios, and Trimble GNSS receivers with integrated 430–450 MHz UHF radios.