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Sennheiser AB 3700 Broadband Antenna Booster

Brand: SENNHEISER

MFR: AB 3700

Price Available Upon Request
  • For EM3731 & EM3732 Receivers
  • Up to 15dB Amplification
  • Bypass Switch
  • Standard 3/8" or 5/8" Mount

Items Included


  • Sennheiser AB 3700 Broadband Antenna Booster
  • Adjustment Tool
  • Instructions
Not in stock - Order now and we'll deliver when available - Normally ships in 4-6 weeks

The Sennheiser AB 3700 Broadband Antenna Booster is an inline RF signal booster for the Sennheiser EM3731, EM3732 and EM3732 Command receivers. The antenna significantly boosts RF strength and gain during long BNC cable runs. The AB 3700 features up to 15dB of amplification and mounts to a standard 3/8" or 5/8" stud.

  • Amplification adjustable in 4 steps (up to 15 dB) to compensate for cable losses
  • DC powered from the receiver via the antenna cable
  • Bypass switch in case of power failure
  • LED operation indicator
  • Antenna booster housed in a rugged, splash-proof all-metal housing
  • Standard 3/8" or 5/8" mounting thread

Frequency Range470-866MHz
AmplificationBypass (-3dB), 5dB, 10dB, 15dB adjustable, without DC feed: -6 dB
Impedance50 Ohms
OIP3: > = 32dBm
Connection2x BNC Sockets
Power Supply9-15 V DC / 160-100 mA, DC feed via antenna cable (RF OUT socket)
Mount3/8" or 5/8" thread
Dimensions3.14 x 2.51 x 0.94" (80 x 64 x 24mm)
Weight9.4 oz (265g)

Packaging Info

Package Weight0.8 lb
Box Dimensions (LxWxH)5.9 x 4 x 2.6"

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Items Included


  • Sennheiser AB 3700 Broadband Antenna Booster
  • Adjustment Tool
  • Instructions