Sanyo TA 4100 Operating Instructions Manual page 8

Five of the most popular locations are shown.
ROOF
TRUNK LIP
MOUNT MOUNT
GUTTER BUMPER
RETRACTABLE
MOUNT MOUNT
AM/F M/CB
NOISE INTERFERENCE
Between the noise limiting circuitry built into the TA 4100 transceiver and
the noise suppression devices built into most automobiles, the total noise
interference effect should be minimal.
In the event exceptions do arise, it is best to consult with an auto radio/CB
technician as there are many steps that can be taken to locate, shield ground
or filter interference in an automobile.