Sennheiser Ab 3700 Broadband Antenna Booster, 470-866mhz

The Sennheiser A 3700 is a professional active omnidirectional UHF antenna designed for Sennheiser wireless microphone systems. It features an integrated AB 3700 antenna booster, making it ideal for large-scale wireless installations, theatres, broadcast environments, houses of worship, and live events where reliable RF reception is critical.

Key Features

• Active omnidirectional antenna with integrated AB 3700 booster
• Frequency range: 470 – 866 MHz
• Adjustable gain settings: Bypass (-3 dB), 5 dB, 10 dB, or 15 dB
• 50 Ω impedance
• BNC RF connection
• DC powered through the antenna cable
• Compatible with:
  • Sennheiser EM 2000 / EM 2050
  • EM 3731 / EM 3732
  • EM 6000 series receivers
• Suitable for both indoor and outdoor installations.

Technical Specifications

• Antenna Type: Omnidirectional active antenna
• Frequency Range: 470 – 866 MHz
• Gain: Adjustable up to 15 dB
• Impedance: 50 Ω
• OIP3: ≥ 32 dBm
• RF Connector: 1 × BNC
• Power Supply: 9–15 V DC via antenna cable
• Mounting Thread: 3/8″ or 5/8″
• Dimensions: approximately 250 × 165 × 23 mm
• Weight: approximately 390–615 g depending on version and included booster hardware.