JVC FSUN3117-312 KD-S8R Instructions Manual page 11

Mode 1
The AF indicator lights up but the REG indicator does not.
Network-Tracking is activated with Regionalization set to "off."
Switches to another station within the same network when the receiving
signals from the current station become weak.
Note:
In this mode, the programme may differ from the one currently received.
Mode 2
Both the AF indicator and the REG indicator light up.
Network-Tracking is activated with Regionalization set to "on."
Switches to another station, within the same network, broadcasting the same
programme when the receiving signals from the current station become weak.
Mode 3
Neither the AF indicator nor the REG indicator lights up.
Network-Tracking is deactivated.
The same programme can be received on different frequencies.
Programme 1 broadcasting
on frequency A
Programme 1 broadcasting on
frequency B
Programme 1 broadcasting on frequency C
Programme 1 broadcasting on frequency E
Programme 1 broadcasting on frequency D
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