The Sennheiser GZL 1019-A5 (article 002325) is a 5 m BNC-to-BNC co-axial antenna cable with a 50 ohm impedance, used in Sennheiser wireless microphone and in-ear monitoring systems. It connects remote antennas, antenna boosters and antenna splitters to receivers or transmitters that use BNC antenna sockets, such as evolution wireless rack receivers and splitters. Moving antennas away from the rack, for example to the front of a stage or high on a wall, improves line-of-sight to the transmitters and makes multi-channel wireless more reliable, and a proper 50 ohm cable keeps losses and mismatches to a minimum. Sennheiser's naming uses the suffix for the length, so A5 is the 5 m version of the GZL 1019 family, which also includes shorter and longer runs. Sennheiser lists a weight of about 210 g. Sennheiser marks this article as no longer available to purchase from its own web shop, so this listing is existing distributor stock. Typical users are sound companies, churches, theatres and conference venues installing wireless systems. It carries Sennheiser's two-year warranty.