Kenwood KDC-5020 - Manual (Page 29)

Function of the KDC-5020R
When the TI function is ON and poor reception conditions are
experienced when listening to a traffic information station,
another traffic information station with better reception will be
searched for automatically.
Display Setting
"ATPS ON" The Auto TP Seek Function is ON.
"ATPS OFF" The Auto TP Seek Function is OFF.
Auto TP Seek
Sometimes stations in the same network broadcast different
programs or use different program service names.
Function of the KDC-5020R
When poor reception is experienced, automatically switch to
another frequency broadcasting the same program in the same
RDS network with better reception.
Display Setting
"AF ON" The AF function is ON.
"AF OFF" The AF function is OFF.
When the AF function is ON, the "RDS" indicator is ON.
When no other stations with stronger reception are available for the
same program in the RDS network, you may hear the incoming
broadcast in bits and snatches. Turn OFF the AF function in such a
case.
AF (Alternative Frequency)
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Display Setting
"CRSC ON" The CRSC is ON.
"CRSC OFF" The CRSC is OFF.
Strong electrical fields (such as from power lines) may cause
unstable sound quality when CRSC is turned ON. In such a situation,
turn it OFF.
Function of the KDC-5020R
You can choose whether or not to restrict the RDS channels,
received with the AF function for a particular network, to a
specific region.
Display Setting
"REG ON" The Region Restrict Function is ON.
"REG OFF" The Region Restrict Function is OFF.
Restricting RDS Region
(Region Restrict Function)
Function of the KDC-5020R
Noise can be reduced when stereo broadcasts are received as
monaural.
Display Setting
"MONO OFF" The monaural reception is OFF.
"MONO ON" The monaural reception is ON.
Monaural Reception <In FM reception>