The Sennheiser AB 4-BW (part 508541) is a filtered inline antenna booster providing +10-12 dB gain for the BW frequency band (626-698 MHz), designed to compensate for signal loss from long antenna cable runs.
Features
Gain: typ. +12 dB (10 dB nominal), band-pass filtered to reject interference.
Connectors: BNC female input/output (phantom powered via antenna cable—no separate PSU needed).
Power: Draws from ASA 214 splitter or EM 2050 receiver (13.8V DC).
Build: Compact full-metal housing (95 x 47 x 21 mm, 130g) for rack/permanent installs.
