SIRIO Gain-Master (1/2 Wave) 25-30MHz - CB & 10m Base Antenna (New Upgrade Version)

The Sirio Gain Master is a high-performance half-wave base station antenna designed for serious CB and 10 metre operators who demand exceptional signal quality, low noise and outstanding long-distance performance. Covering 27-30MHz, the antenna is fully tunable, making it suitable for both the CB and 10m amateur radio bands.

Unlike traditional ground plane antennas, the Gain Master features an innovative coaxial sleeve design that eliminates the need for radial elements. This results in a cleaner radiation pattern, reduced local interference and improved efficiency, making it one of the most respected base antennas available today.

Constructed from high-quality fibreglass with UV-resistant materials, the Gain Master is built to withstand years of outdoor use in demanding weather conditions. Despite its lightweight design, it offers excellent mechanical strength while remaining easy to install.

Whether you're working local stations or chasing long-distance DX during favourable propagation conditions, the Sirio Gain Master delivers superb performance with low-angle radiation, making it an excellent choice for home base stations.

Key Features

• High-performance half-wave base station antenna
• Tunable from 27MHz to 30MHz
• Ideal for CB and 10 metre amateur radio operation
• Innovative radial-free coaxial sleeve design
• Excellent low-angle radiation for DX performance
• Reduced local noise and improved signal efficiency
• Lightweight yet durable fibreglass construction
• UV-resistant weatherproof design
• 50 Ohm impedance
• Easy to assemble and install
• Made in Italy by Sirio Antenne

Technical Specification

• Frequency Range: 27-30 MHz (Tunable)
• Antenna Type: Half Wave End-Fed
• Applications: CB Radio & 10 Metre Amateur Radio
• Impedance: 50 Ohms
• Polarisation: Vertical
• Radiation Pattern: Omnidirectional
• Maximum Power: 1000 Watts (CW) / 3000 Watts (PEP)
• Connector: SO239 (UHF Female)
• Wind Resistance: Designed for permanent outdoor installation
• Construction: UV-stabilised fibreglass with high-quality weather-resistant components
• Overall Length: Approx. 7.15 metres
• Weight: Approx. 2.9kg

The Sirio Gain Master has earned an outstanding reputation among CB and amateur radio enthusiasts for its excellent efficiency, low noise characteristics and impressive DX capabilities. Its innovative radial-free design makes installation simple while delivering reliable performance year after year, making it one of the finest base antennas available for the 27-30MHz bands.