Chrysler 2008 PT Cruiser - Manual (Page 253)

Electrical Disturbances
Radio waves may pick up electrical disturbances during
transmission. They mainly affect the wave amplitude, and
thus remain a part of the AM reception. They interfere very
little with the frequency variations that carry the FM signal.
AM Reception
AM sound is based on wave amplitude, so AM reception can
be disrupted by such things as lightning, power lines and
neon signs.
FM Reception
Because FM transmission is based on frequency variations,
interference that consists of amplitude variations can be
filtered out, leaving the reception relatively clear, which is the
major feature of FM radio.
NOTE: The radio, steering wheel radio controls (if
equipped), and six-disc CD/DVD changer (if equipped)
will remain active for up to 10 minutes after the ignition
switch has been turned OFF. Opening a vehicle front door
will cancel this feature.
SALES CODE REF — AM/FM/CD (SINGLE DISC)
RADIO WITH OPTIONAL SATELLITE RADIO AND
HANDS FREE PHONE CAPABILITY
NOTE: The radio sales code is located on the lower right
side of your radio faceplate.
REF Radio
UNDERSTANDING YOUR INSTRUMENT PANEL 251
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