Sennheiser AB 4-AW+ Inline Antenna Booster - Frequency Band AW+ (470- 558 MHz)

The AB 4-AW+ is an inline antenna booster from Sennheiser designed to strengthen wireless microphone and in-ear monitor signals across the AW+ frequency band. Delivering a typical gain of 12 dB, this compact unit addresses signal dropouts and reception issues in venues with challenging RF environments or longer cable runs between antennas and receivers. The booster operates across 470–558 MHz, maintaining 50 Ω impedance throughout the signal path to preserve clarity and minimise interference.

Connectivity is handled via BNC connections, ensuring secure coupling with existing antenna distribution systems and receiver infrastructure. Weighing just 130 grams with dimensions of 95 mm height, 47 mm length, and 21 mm width, the unit integrates discreetly into rack-mounted setups or portable rigs. The 50 Ω impedance matching prevents signal reflection and maintains consistent RF performance across the entire frequency range. Power requirements are minimal, and the booster's compact footprint allows placement close to antenna feed points where signal reinforcement is most effective.

Features

• Inline antenna booster for Sennheiser wireless systems in AW+ band
• Typical gain of 12 dB to strengthen wireless RF signals
• Operates across 470–558 MHz AW+ frequency range
• BNC cable connections for secure antenna and receiver integration
• 50 Ω impedance matching throughout the signal path
• Compact 130 gram unit measures 95 x 47 x 21 mm
• Addresses signal dropouts in challenging RF environments
• Includes AB 4-AW+ antenna booster unit in box