Sony XR-5450 Operating Instructions Manual page 11

Turning on the Radio Automatically while Fast-winding the Tape
(ATA Function)
The tuner turns on automatically when you press the <4 or
®P button during tape playback. When you resume tape
playback, the tuner turns off automatically. "ATA" indication
flashes while the ATA function is activated.
To cancel the mode
Press the button once more.
Note
You can release this function only during tape playback.
| The: car antenna will automatically be
: extended while the ATA function is
activated. (Only the cars equipped with
If you do not press the ATA button again to stop the
ATA function, the car antenna will be kept extended in
order to receive radio programs during tape playback.
| power antennas)