GM None Pontiac Aztek - Manual (Page 205)

If both PTY and TRAF are on, the radio will scan for
stations with the selected PTY and traffic
announcements.
BAND (Alternate Frequency): Alternate frequency
allows the radio to switch to a stronger station with the
same programming. To turn alternate frequency on
press and hold BAND for two seconds. AF ON
will appear on the display. The radio may switch to
stronger stations.
To turn alternate frequency off press and hold BAND
again for two seconds. AF OFF will appear on the
display. The radio will not switch to other stations.
This function does not apply for XM™ Satellite Radio
Service.
Setting Preset PTYs (RDS Only)
The six numbered pushbuttons let you return to your
favorite PTYs. These pushbuttons have factory
PTY presets. You can set up to 12 PTYs (six FM1 and
six FM2) by performing the following steps:
1. Press BAND to select FM1 or FM2.
2. Press PROG TYPE to activate program type select
mode. The PTY symbol will appear on the display.
3. Turn the SELECT knob to select a PTY.
4. Press and hold one of the six numbered
pushbuttons until you hear a beep. Whenever you
press that numbered pushbutton, the PTY you
set will return if program type select mode is
activated.
5. Repeat the steps for each pushbutton.
RDS Messages
ALERT!: Alert warns of national or local emergencies.
When an alert announcement comes on the current
radio station, ALERT! will appear on the display. You will
hear the announcement, even if the volume is muted
or a CD is playing. If a CD is playing, play will stop
during the announcement. You will not be able to turn
off alert announcements.
ALERT! will not be affected by tests of the emergency
broadcast system. This feature is not supported by
all RDS stations.
INFO (Information): If the current station has a
message, INFO will appear on the display. Press this
button to see the message. The message may display
the artist, song title, call in phone numbers, etc.
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