| http://www.w3.org/ns/prov#value | - On the other hand, the digital mode is a mode where the transmitter apparatus encodes a speech signal and data and transmits a carrier wave digitally modulated by a ??/4 shifted DQPSK (??/4 shifted Differentially Encoded Quadrature Phase Shift Keying) system with the use of the encoded signal and data, and the receiver apparatus receives and digitally demodulates the modulated wave, thereby decodi
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