A radio communication terminal comprising: a modulation unit (200a, 200c) for generating a first upward link modulated transmission signal transmitted by a first upward link frequency belonging to a first upward band used for upward link communication in both of a first radio communication network and a second radio communication network, and for generating a second upward link modulated transmission signal transmitted by a second upward link frequency belonging to a second upward band used for upward link communication in said second radio communication network; a first transmission bandpass filter for passing a frequency component belonging to said first upward band; a second transmission bandpass filter for passing a frequency component belonging to said second upward band; a duplexer for passing a frequency component belonging to said first upward band so that said first upward link modulated transmission signal passes through said first transmission bandpass filter, and for passing a frequency component belonging to said second upward band so that said second upward link modulated transmission signal passes through said second transmission bandpass filter; a combiner for combining said first upward link modulated transmission signal that has passed through said first transmission bandpass filter and said second upward link modulated transmission signal that has passed through said second transmission bandpass filter; a transmitter antenna for simultaneously transmitting said first upward link modulated transmission signal and said second upward link modulated transmission signal; a receiver antenna for simultaneously receiving a first forward link modulated reception signal modulated by a first forward link frequency belonging to a first forward band used in forward link communication in both the first radio communication network and the second radio communication network and a second forward link modulated reception signal modulated by a second forward link frequency belonging to a second forward band used for forward link communication in said second radio communication network, said first forward band and said second forward band being contiguous; a reception bandpass filter for passing a frequency component belonging to said first forward band and a frequency component belonging to said second forward band from the receiver antenna; and a demodulation unit (200b, 200d) for generating a first reception signal by demodulating said first forward link modulated reception signal that has passed through said reception bandpass filter and for generating a second reception signal by demodulating said second forward link modulated reception signal that has passed through said reception bandpass filter. a modulation unit (200a, 200c) for generating a first upward link modulated transmission signal transmitted by a first upward link frequency belonging to a first upward band used for upward link communication in both of a first radio communication network and a second radio communication network, and for generating a second upward link modulated transmission signal transmitted by a second upward link frequency belonging to a second upward band used for upward link communication in said second radio communication network; a first transmission bandpass filter for passing a frequency component belonging to said first upward band; a second transmission bandpass filter for passing a frequency component belonging to said second upward band; a duplexer for passing a frequency component belonging to said first upward band so that said first upward link modulated transmission signal passes through said first transmission bandpass filter, and for passing a frequency component belonging to said second upward band so that said second upward link modulated transmission signal passes through said second transmission bandpass filter; a combiner for combining said first upward link modulated transmission signal that has passed through said first transmission bandpass filter and said second upward link modulated transmission signal that has passed through said second transmission bandpass filter; a transmitter antenna for simultaneously transmitting said first upward link modulated transmission signal and said second upward link modulated transmission signal; a receiver antenna for simultaneously receiving a first forward link modulated reception signal modulated by a first forward link frequency belonging to a first forward band used in forward link communication in both the first radio communication network and the second radio communication network and a second forward link modulated reception signal modulated by a second forward link frequency belonging to a second forward band used for forward link communication in said second radio communication network, said first forward band and said second forward band being contiguous; a reception bandpass filter for passing a frequency component belonging to said first forward band and a frequency component belonging to said second forward band from the receiver antenna; and a demodulation unit (200b, 200d) for generating a first reception signal by demodulating said first forward link modulated reception signal that has passed through said reception bandpass filter and for generating a second reception signal by demodulating said second forward link modulated reception signal that has passed through said reception bandpass filter.