4.4 Radiotext
This refers to text transmissions, primarily addressed to consumer home receivers
or mobile receivers, which would be equipped with suitable display facilities. The
text can be up to 64 characters long. Some receivers do not support the Radiotext
(RT) service.
Enabled
Enables or disables the Radiotext, including all
related functions.
Note: If Radiotext is disabled, the encoder sends
no 2A groups.
Radiotext messages
A set of Radiotexts. To get the RT working, at
least one line must be filled by some text and that
line must be selected.
If ‘Text sources’ tool is enabled for the Radiotext,
the text appears in the first line.
Type
Radiotext type A and B are equal. On most
receivers, a changing of the type completely
clears previous Radiotext while leaving the type
unchanged causes the new message to rewrite all
letters as they are received. Some receivers keep
RT A and RT B in separated memory space.
Send next RT after
Allows switching between more Radiotexts using
predefined time period.
Empty messages will be omitted. The feature may
be combined with reading the RT from file. You
may also select the Radiotext manually.
Toggle RT type
Controls the RT type automatically
automatically
(recommended).
Toggles the RT type any time a new Radiotext is
sent to the encoder.
4.5 System
Clock-Time and Date (CT)
Starts/Stops the Clock-Time and Date
transmission (CT). The time and date information
is taken from PC system clock. Needs the
TinyRDS application to be running.
Subcarrier Phase Shift
Fixes the relative phase shift between the pilot
tone and the RDS signal. The value serves only
as a scale, it may not provide real phase shift
value. Has a sense only if Clock Source is set to
Auto.
PLL Lock Range
Specifies the maximum PLL lock range for the
(MRDS192 only)
pilot signal. The PLL will never lock to any signals
outside this range and stays stable in any
situation. If high quality stereo encoder is used,
you may set +/- 2 Hz value. Default value is +/- 5
Hz.
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