See also:

Selecting preset channels
Presetting a channel with a preset button allows you to select that channel in a single operation. Up to six SAT1, SAT2 and SAT3 channels each may be preset. ...

Adjustable level of each volume
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Flat tires
If you have a flat tire while driving, never brake suddenly; keep driving straight ahead while gradually reducing speed. Then slowly pull off the road to a safe place. ...