Pioneer KEH-P2800R - Manual (Page 21)

AF Function
The AF (Alternative Frequencies search) function is used to search for other frequencies in the
same network as the currently tuned station. It automatically retunes the receiver to another
frequency in the network which is broadcasting a stronger signal when there are problems with
reception of the currently tuned station or better reception is possible on a different frequency.
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• AF tunes the receiver only to RDS stations when you use Seek tuning or BSM Auto Memory with the
"AF" indicator ON.
• When you recall a preset station, the tuner may update the preset station with a new frequency from
the station's AF list. (This is only available when using presets on the FM1 and FM2 bands.) No preset
number appears on the display if the RDS data for the station received differs from that for the
originally stored station.
• Sound may be temporarily interrupted by another program during an AF frequency search.
• When the tuner is tuned to a non-RDS station, the "AF" indicator flashes.
• AF can be switched ON or OFF independently for each FM band.
Activating/deactivating the AF Function
AF is set to ON by default.
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To turn AF back ON, repeat the preceding operation.
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• You can also switch the AF Function ON/OFF in the Function Menu.
Hold for 2 seconds "AF" disappears