lights FORD EXPEDITION 1997 1.G Audio Guide

RADIO FREQUENCY
INFORMATION
The Federal Communications
Commission (FCC) and the
Canadian Radio and
Telecommunications
Communications (CRTC) establish
the frequencies AM and FM
stations may use for their
broadcasts. Allowable frequencies
are:
AM 530, 540±1600, 1610 kHz steps
FM 87.9, 88.1±107.1, 107.9 Mhz
steps
Not all frequencies are used in a
given area.
RADIO RECEPTION FACTORS
Three factors can affect radio
reception:
²Distance/strength. The further
an FM station travels, the
weaker it is. The listenable
range of the average FM station
is approximately 40 km (24
miles). This range can be
affected by ªsignal modulation.º
Signal modulation is a process
radio stations use to increase
their strength/volume relative to
other stations.
²Terrain. 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,
driving under bridges and
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Radio frequency information
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