26
Radio Frequency Information
“signal modulation.” Signal modulation
is a process radio stations use to
increase their strength/volume relative
to other stations.
• Terrain. Hills, mountains and tall
buildings between your vehicle’s
antenna and the radio station signal
can cause FM reception problems.
Static can be caused on AM stations
by power lines, electric fences, traffic
lights and thunderstorms. Moving away
from an interfering structure (out of its
“shadow”) returns your reception to
normal.
•Station overload. Weak signals are
sometimes captured by stronger
signals when you pass a broadcast
tower. A stronger signal may
temporarily overtake a weaker signal
and play while the weak station
frequency is displayed.
The audio system automatically
switches to single channel reception if
it will improve the reception of a
station normally received in stereo.