Pioneer AVH-2330NEX Operation Manual page 46

Menu Item
[Local]
[Off]
FM: [Level1] [Level2] [Level3] [Level4]
AM: [Level1] [Level2]
* AVH-2330NEX/AVH-1330NEX
Description
Local seek tuning allows you to only tune into
radio stations with sufficiently strong signals.
NOTE
[Level4] for FM and [Level2] for AM are available only
with the stations with the strongest signals.
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