Sennheiser EW-D AB Antenna Booster

The EW-D AB is the inline antenna booster for Evolution Wireless Digital. Coax eats signal, and on a long run from a remote antenna back to the rack that loss is what makes a receiver start dropping out. The booster puts the gain back at the antenna end, where it does some good.

It is a band-specific part: the Q and R versions cover the matching EW-D tuning ranges, so order it to match the receivers it is feeding.