Diamond Original X50NA Dualband Base/Repeater Antenna 144–148 MHz & 435–450 MHz High-Gain VHF/UHF Vertical Antenna with Type-N Connector Fiberglass Radome for Ham Radio Stations

The Diamond Original X50NA Dualband Base/Repeater Antenna is a high-performance vertical antenna designed to support amateur radio operators, repeater builders, and fixed station installations that require reliable communications on both 2 meters (144–148 MHz) and 70 centimeters (435–450 MHz). Featuring a durable fiberglass radome and corrosion-resistant stainless-steel hardware, this antenna is built for long-term outdoor deployment and outdoor weather resistance. With gain figures of approximately 4.5 dB on the 2 m band and 7.2 dB on the 70 cm band, the X50NA delivers medium-gain performance that enhances both signal transmission and reception compared with basic VHF/UHF base antennas. These gain characteristics make it an excellent choice for applications such as local repeater coverage, base station communication, fixed mount installations, and general VHF/UHF communications where strong consistent performance is required. Rated for up to 200 W of RF power and designed with a VSWR typically below 1.5:1 across both operating bands, the X50NA maintains efficient power transfer and minimal signal reflection for clean operation under moderate power loads. Its factory-adjusted design eliminates the need for onsite tuning, simplifying setup on masts, rooftops, or tower installations. The antenna’s Type-N female connector interfaces smoothly with low-loss coax feed lines and compatible mast mounts, and its rugged construction and DC-grounded design protect connected equipment from static and environmental electrical events. Accepting mast diameters from approximately 30 mm to 62 mm, the X50NA supports a wide range of mounting configurations while delivering reliable dual-band performance. Compact yet capable, with a total height of around 5.6 ft (1.7 m) and wind resistance up to 135 mph (no ice), the Diamond X50NA represents a versatile and dependable choice for amateur radio base stations, repeater systems, and other fixed RF communications installations where durability and consistent performance are key.

• Diamond X50NA dualband base/repeater antenna delivers optimized VHF and UHF performance for 144–148 MHz and 435–450 MHz amateur radio bands, providing elevated signal reach and sensitivity in fixed station, repeater, or fixed mount applications without frequent retuning
• Engineered with medium-gain characteristics of approximately 4.5 dBi on 2 m and 7.2 dBi on 70 cm, this antenna helps improve both transmit coverage and receive clarity over basic vertical designs, enabling better coverage of local nets and repeater access points
• Rugged construction features a heavy-duty fiberglass radome and stainless-steel hardware to resist corrosion and harsh outdoor conditions; factory-pre-tuned for performance right out of the box without the need for field adjustments
• Rated for up to 200 W of RF power with standard 50 ohm impedance and VSWR typically below 1.5:1 across both bands, the X50NA supports reliable performance for base station and repeater systems in residential, club, or commercial environments
• Includes a Type-N female connector that mates easily with standard low-loss coax and mast feed lines, and accepts mast diameters in a broad range for flexible installation options on towers, rooftops, and fixed mounts
• Approximately 4.5 dBi gain (2 m) and 7.2 dBi gain (70 cm) for enhanced signal reach
• Rugged fiberglass radome and stainless-steel hardware for outdoor durability
• Factory-pre-tuned with stable VSWR performance for plug-and-play installation
• Type-N female connector for broad coax compatibility