X50A X50 X50-A Diamond Original 144/440 MHz Dual Band Base Antenna - UHF Connector, 5.6 FT

The Diamond X50A Dual-Band Base/Repeater Antenna is a high-performance vertical antenna optimized for VHF and UHF operations in amateur radio, public service networks, and fixed station applications. Purpose-built for the 144–148 MHz (2 meter) and 435–450 MHz (70 centimeter) frequency ranges, this antenna delivers strong transmit and receive performance across both bands without the need for field tuning, thanks to its precision factory adjustment. At approximately 4.5 dB gain on the 2 meter band and 7.2 dB gain on the 70 centimeter band, the X50A provides medium-to-high gain characteristics that enhance coverage and repeater access beyond typical base station antennas. Its durable design includes a rugged fiberglass radome and stainless-steel hardware, ensuring long-lasting performance in harsh outdoor conditions while resisting corrosion and environmental wear. Rated for up to 200 W of RF power and engineered to withstand wind speeds of up to 135 MPH (without ice), this antenna is suitable for permanent installation on masts, towers, and rooftop mounts. The DC-grounded structure provides added protection against high-voltage surges, improving station safety and equipment longevity. Measuring about 5.6 feet (1.7 m) tall, the X50A offers a compact footprint without compromising performance, allowing it to fit easily on a variety of mast diameters while maintaining efficient radiation patterns. With a standard UHF female connector, it interfaces seamlessly with your existing coax feed line and support hardware. This versatile dual-band antenna is ideal for amateur radio enthusiasts, repeater builders, emergency communications teams, and fixed station operators who need reliable operation across two of the most popular ham bands. Its robust construction and broad VHF/UHF coverage make it a trusted choice for both everyday use and critical communications scenarios.

• Precision-engineered dual-band base and repeater antenna designed for both 2 meter (144–148 MHz) and 70 centimeter (435–450 MHz) amateur radio bands, offering broad coverage in VHF and UHF frequency ranges without manual tuning
• Gain performance of approximately 4.5 dB on the 2 meter band and 7.2 dB on the 70 centimeter band enhances both transmit strength and receive sensitivity for clearer communications and extended coverage on repeaters and fixed stations
• Built with a robust fiberglass radome and corrosion-resistant stainless-steel hardware to withstand outdoor environments, extreme weather, and high wind loads up to approximately 135 MPH without ice buildup for reliable long-term deployment
• Factory-adjusted design means no field tuning is required, simplifying installation on masts and towers while providing stable VSWR performance below 1.5:1 across the operational frequency range for efficient RF transfer and minimal signal loss
• Standard UHF female connector offers broad compatibility with most coax feed lines and mount systems, making the antenna suitable for base station hubs, repeater systems, community networks, and amateur radio setups
• True dual-band performance covering 144–148 MHz and 435–450 MHz with medium-to-high gain characteristics
• 4.5 dB gain on 2 m and 7.2 dB gain on 70 cm for stronger signal reach and repeater performance
• Rugged fiberglass radome and stainless-steel hardware for all-weather reliability
• Factory pre-tuned design eliminates field tuning and simplifies installation
• Standard UHF female connector for broad coax and mount compatibility