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9.2.3 Radiotext Plus (RT+)
The RT+ feature is designed to let the listener take additional benefit from the Radiotext service by enabling
receivers to offer direct access to specific elements of Radiotext. Typically the RT+ feature supports song artist and
song title elements. These elements anyway carried in the Radiotext, are identified by their class type, length and
location within the Radiotext. The receiver must be equipped with the RT+ function (also called "tagging") to take
advantage of this feature.
The RDS encoder includes full support for the RT+ and its handling is highly automated. For direct use your
broadcast automation system must support the RT+ function either by means of user defined groups or by the
command RTP= (see section 11.7 for more details). In other cases the Windows control software used in the
indirect link configuration can provide the RT+ service.
9.2.4 No header communication
By default, entering a text into the RDS encoder requires appropriate command header, for example:
RT1=Now playing: Junior Jack – My Feeling
Some broadcast automation systems provide direct serial text output (song info, commercials) without ability to add
the RT1= or DPS1= prefix (typically satellite-streamed text feeds). For this case the RDS encoder provides special
no header communication option enabling direct connection. When this option is active, any text incoming through
the serial interface (including any control commands!) and followed by <Enter> will be automatically parsed and will
appear as Radiotext 1, Dynamic PS 1 or both. Control of other RDS services is not allowed until deactivating the no
header option.
To activate the no header communication:
1. Configure all RDS services as desired.
2. Enter the command *NOHDR=1.
3. The no header communication is indicated by front panel LED (see chapter 12).
To deactivate the no header communication, press the keyboard <Escape> key three times and then press
<Enter>. The RDS encoder will respond by ‘+’ indicating that it is back in standard communication mode.
Notes:
1. The ESC key scan code is 27 (0x1B).
2. It is not allowed to enter the no header communication if the RDS encoder addressing feature is in use. Thus
the RDS encoder address must be either 0 or 255.
3. If the no header communication is active, the unit does not accept UECP commands although the UECP
is enabled.
4. If the no header communication is active, the unit does not confirm the text entered.
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