Default Radiotext is the Radiotext stored in the non-volatile memory.
You may enter it in the GUI, section Text setup, or via console:
RT1=Default RT typed here
*RT1
The timeout can be specified in minutes:
DTTMOUT=10
*DTTMOUT
In latest firmware version the default text features are considerably extended as you may use X-Command for the default text. This for example brings a possibility to include RT+ in the default Radiotext.
The default text in X-Command format is stored in Message 91 for Program set 1 or Message 92 for Program set 2:
*MSG91=<rds><item><dest>3</dest><text>Visit us at <url>http://radio.com</url></text></item></rds>
You may also initiate a timed loop of fixed RT+ messages on the default timeout event:
*MSG01=<rds><item><dest>3</dest><text>Visit our website at <url>http://radio.com</url></text></item></rds>
*MSG01D=4
*MSG02=<rds><item><dest>3</dest><text>Call us: <phone>609123456</phone></text></item></rds>
*MSG02D=4
*MSG03=<rds><item><dest>3</dest><text>Mail us: <email>studio@radio.com</email></text></item></rds>
*MSG03D=4
*MSG91=<rds><tmr>5:00</tmr></rds>
See the X-Command specification for details. See also the SETFEAT command description in the Technical manual.