Motorola MA560 Series Start Here Manual page 20

This equipment has been tested and found to comply with the
limits for a Class B digital device, pursuant to Part 15 of the
FCC Rules. These limits are designed to provide reasonable
protection against harmful interference in a residential
installation.
This equipment generates, uses, and can radiate radio
frequency energy and, if not installed and used in accordance
with the instructions, may cause harmful interference to radio
communications. However, there is no guarantee that
interference will not occur in a particular installation.
If this equipment does cause harmful interference to radio or
television reception, which can be determined by turning the
equipment on and off, the user is encouraged to try to correct
the interference with one or more of the following measures:
Reorient or relocate the receiving antenna (that is, the antenna
for the radio or television that is "receiving" the interference).
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