6
C. SOURCES OF EMI
(
continued
)
1.
Medium-Range Mobile Transceivers:
These include two-way radios used
in police cars, fire trucks, ambulances and taxi cabs. The antenna isusually
mounted on the outside of the vehicle.
NOTE -
These devices can transmit signals while they are on, even if
they are not in use.
2.
Long-Range Transceivers:
These include commercial radio and TV broadcast
antenna towers and amateur (HAM) radios.
NOTE -
The following are not likely to cause EMI problems:
• Laptop computers (without phone or fax),
• Cordless phones,
• TV sets or AM/FM radios,
• CD or tape players.
!
WARNING
D. DISTANCE FROM THE SOURCE
EM energy rapidly becomes more intense as you get closer to the source. For this
reason, EMI from hand-held devices are of special concern
(see C.1 (portable
transceiver) from the previous section for more information).
A person using one of
these devices can bring high levels of EM energy very close to your scooter without
you knowing it.
