LG -TM510 User Manual page 6

In the United States and Canada, the SAR limit for mobile
phones used by the public is 1.6 watts/kg (W/kg) averaged
over one gram of tissue. The standard incorporates a
substantial margin of safety to give additional protection for
the public and to account for any variations in
measurements.
SUBJECT
The LG-TM510 phone has been designed to operate
on the latest digital mobile communication technology,
Code Division Multiple Access (CDMA). CDMA digital
technology has greatly enhanced voice clarity and can
provide a variety of advanced features. Currently,
CDMA mobile communication technology has been
commercially used in Cellular and Personal
Communication Service (PCS).
The difference between them is the operating frequency
spectrum. Cellular uses 800 MHz and PCS uses 1.9
GHz. The phone can operate on both
LG-TM510
frequencies, so it is referred to as a dual-band phone.
Also, the phone works on Advanced Mobile
LG-TM510
Phone Service (AMPS). We call it a tri-mode phone. If
one of the Cellular, PCS, and AMPS base stations is
located nearby, the call fail rate of the tri-mode phone is
less than a dual-band phone or a single-band phone.
CDMA technology adopts DSSS (Direct Sequence
Spread Spectrum.) DSSS enables the phone to keep
communication discreet and allows one frequency
channel to be used by multiple users in the same
specific area, resulting in increased capacity 10 times
more compared to the analog mode currently used.
Soft/Softer Handoff, Hard Handoff, and Dynamic RF
power control technologies are combined into this
phone to reduce interruptions in a middle of a call.