Yamaha RX-V3900 Owner's Manual page 56

Radio Data System tuning (U.K. and Europe models only)
Notes
• If the signals being received are not strong enough, this unit
may not be able to utilize the Radio Data System data. In
particular, the RT mode requires a large amount of data and may
not be available even when the other Radio Data System display
modes are available.
• If the signal strength is weakened by external interference while
this unit is receiving the Radio Data System data, the reception
may be cut off unexpectedly and "--------" appears in the front
panel display.
• When the RT mode is selected, this unit can display the
program information by a maximum of 64 alphanumeric
characters, including the umlaut symbol. Unavailable characters
are displayed with the "_" (underscore).
• If the reception is cut off when the CT mode is selected, "CT
WAIT" appears in the front panel display.
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