Overview of rds, Automatic retuning for best reception results, Af function – Sony XR-CA800 User Manual
Page 12
 
12
RDS
Overview of RDS
FM stations with Radio Data System (RDS) 
service send inaudible digital information along 
with the regular radio programme signal. For 
example, one of the following will be displayed 
upon receiving a station with RDS capability.
RDS services
RDS data offers you other conveniences, such as:
•
Automatic retuning
of a programme, helpful
during long-distance drives. — AF
t page 12
• Receiving
traffic announcements
, even
when enjoying another programme/source. — 
TA 
t page 13
• Selecting stations by the
type of programme
it broadcasts. — PTY
t page 14
• Automatic
clock time
setting. — CT
t page
Notes
• Depending on the country or region, not all of the 
RDS functions are available.
• RDS may not work properly if the signal strength is
weak or if the station you are tuned to is not 
transmitting RDS data.
Automatic retuning for best 
reception results 
— AF function
The alternative frequencies (AF) function allows 
the radio to always tune into the area’s strongest 
signal for the station you are listening to.
1
Select an FM station (page 10).
2
Press
(AF)
repeatedly until “AF-ON”
appears.
The unit starts searching for an alternative 
frequency with a stronger signal in the same 
network.
If “NO AF” flashes, the currently tuned into 
station does not have an alternative frequency.
Note
When there is no alternative frequency in the area or 
when you do not need to search for one, turn the AF 
function off by selecting “AF-OFF.”
To
Press
Switch display 
item
(DSPL/PTY)
Displayable items
• Music source
• Clock
• Function
Displayable items
• Station name (frequency)
• Programme type
Frequencies change automatically.
98.5 MHz
Station
102.5 MHz
96.0 MHz