Sirio New Vector 4000 27-28.5 Tunable Base Antenna

The Sirio New Vector 4000 is a high-performance base station antenna designed for radio enthusiasts and professionals seeking reliable signal reception and transmission. This omnidirectional antenna is tunable by adjusting the whip length, allowing it to operate over a wide frequency range of 27 MHz to 28.5 MHz. Whether you’re operating on 27 MHz CB radio frequencies or other communication bands, the New Vector 4000 provides excellent performance with high power handling capabilities.

With a maximum range of 8.5 meters, this antenna ensures strong signal reception and transmission, making it ideal for both amateur and commercial applications. The antenna features a 3/4 coaxial J-pole design for enhanced stability and efficient power handling. With a bandwidth of 1400 KHz at SWR 2, it offers an SWR of 1.2 at resonant frequency, ensuring minimal signal loss for clear communication.

Its grey color gives the antenna a professional and durable finish, while its robust construction ensures longevity and resistance to the elements.

9.1Expert Score

The Sirio New Vector 4000 is a tunable base station antenna with a frequency range of 27-28.5 MHz. Featuring high power handling and omnidirectional coverage, it's ideal for professional and amateur use.

The Sirio New Vector 4000 base station antenna offers tunable frequencies from 27 to 28.5 MHz, delivering excellent performance with a high-power handling capability and 8.5 meters of range.

PROS

• Excellent high power handling
• Tunable frequency range (27-28.5 MHz)
• Omnidirectional design for 360-degree coverage
• Durable construction for outdoor use
• Low SWR (1.2 at resonant frequency) for optimal performance

CONS

• Requires proper setup for optimal performance
• Larger size may not be ideal for compact spaces