Shure UABiast-US In-line adapter. Supplies 12V DC bias power over coaxial BNC cable, includes PS23US

In-line adapter that supplies 12V DC bias power over the coaxial BNC antenna cable, for use when a receiver antenna input does not provide power of its own. It passes RF while injecting DC, and can feed up to three UA834 in-line amplifiers or two amplifiers plus one UA874 active antenna. Supplied with a Shure power supply for a standard wall outlet.