The Barrett 1 kW ATU is designed for continuous operation under severe environmental conditions. It is housed in a rugged, waterproof metal case that should be mounted as close as possible to the radiating part of the antenna. Optional shock mounts may be used to mount the tuner to any convenient surface in a vehicle, on a ship, or in a base station configuration.
In addition to the first-time automatic tuning mode, the Barrett 1 kW ATU has a built-in 100 channel memory that allows “silent tuning” and permits a retune mode whereby the tuning elements are automatically repositioned to a predetermined condition in less than 20 mS. This “retune” mode is utilised when the associated radio system is operating in an ALE mode.