the Barrett 411 (P/N BC411001) automatic antenna tuner is designed for operation in land mobile and base station installations with Barrett and OEM radio products.
Housed in a fully weatherproof enclosure, the 411 will efficiently tune long wire antennas up to a length of 20 metres, wire loop antennas or whip antennas over a frequency range of 1.5 to 30 MHz. Tuning is rapid, typically less than 1.5 seconds from the first time RF is applied, either whilst the operator is talking or when the “Tune” control is activated on the transceiver...