Alfa Romeo 156 Sound System Manual page 27

Local/Distant (SEEK LOC/DX)
These are two levels of reception sensitivity.
1) Distant (maximum sensitivity), which makes it possible to tune
all the stations that can be received.
2) Local (minimum sensitivity), which makes it possible to tune
only those stations with sufficiently strong signals, such as
for example local stations.
Loudness
Function that automatically emphasises the bass and treble tones
when listening, at low level. It is cut off with the volume set to the
maximum.
Mute
Function which, if activated, brings the volume to zero. Press the
button again to restore volume.
Presettings
Number of radio stations that can be stored manually or auto-
matically.
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PTY (Program Type)
This function allows the presetting of a category of programmes
such as for instance, news bulletins, music, sport, etc. The set au-
tomatically gives priority to the type of programme selected when
transmission starts, interrupting the one in progress.
Radio monitor
This function makes it possible to listen to the radio during fast tape
rewind.
RDS (Radio Data System)
This is radiophonic information system which uses the 57 kHz sub-
carrier of normal FM broadcasts.
With this function it is possible to receive different types of infor-
mation such as traffic bulletins and station names and to tune au-
tomatically to a station with strong signal broadcasting the same pro-
gramme.
PLL tuning
Digital tuning with Phase Lock Loop circuit to obtain the best ra-
dio channel tuning.