The systems used for mobile phone communication in
Japan, are completely different to those, used in other parts of
the world and therefore, your handset, regardless of whether it has tri-band capabilities
or not, will be incompatible with the Japanese networks. The original system in Japan was the J-TACS analogue
system, which operated at 25MHz, but it has now developed a digital
system based on the D-AMPS
technology that was designed for use at 30MHz. The new system
is now known as Personal Digital Cellular, [PDC], or Japanese Digital
Cellular, [JDC] and has become the second most popular mobile system,
the first being the GSM
network.
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