Sharp STX-2 User Manual page 211

(2) This device must accept any interference received.
Including interference that may cause undesired operation.
INFORMATION TO USER
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 off and
on, the user is encouraged to try to correct the interference by one or
more of the following measures:
- Reorient or relocate the receiving antenna.
- Increase the separation between the equipment and receiver.
- Connect the equipment into an outlet on a circuit different from that to
which the receiver is connected.
- Consult the dealer or an experienced radio/ tv technician for help.
The user who makes changes or modifications to the unit
CAUTION:
without the express approval by the manufacturer will void
user authority to operate the equipment.
SAFETY