Kenwood One-Touch-Tune. Microprocessor based interface providing DC power and intelligent communications between the radio and the autotuner.

Supported Radios:
TS-2000, TS-450S, TS-50S, TS-570, TS-690S, TS-850S, TS-870S (any radio that supports the Kenwood AT-300 or AT-50 Antenna Tuners).

Functionality:
Pressing the tune button quickly on the radio starts the tuning process. Pressing and holding the tune button on the radio by-passes the tuner.