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ข้อมูลสัญลักษณ์จำแนกการออกแบบผลิตภัณฑ์ระหว่างประเทศ

รหัส / code คำอธิบาย / code name Version
H04B0001403000 using the same oscillator for generating both the transmitter frequency and the receiver local oscillator frequency 1
H04B0001405000 with multiple discrete channels 1
H04B0001408000 the transmitter oscillator frequency being identical to the receiver local oscillator frequency 1
H04B0001440000 Transmit/receive switching 1
H04B0001460000 by voice-frequency signals; by pilot signals 1
H04B0001480000 in circuits for connecting transmitter and receiver to a common transmission path, e.g. by energy of transmitter 1
H04B0001500000 using different frequencies for the two directions of communication 1
H04B0001520000 Hybrid arrangements, i.e. arrangements for transition from single-path two-direction transmission to single-direction transmission on each of two paths or ; vice versa 1
H04B0001525000 with means for reducing leakage of transmitter signal into the receiver 1
H04B0001540000 using the same frequency for two directions of communication (H04B0001440000 takes precedence);; 1
H04B0001560000 with provision for simultaneous communication in two directions 1
H04B0001580000 Hybrid arrangements, i.e. arrangements for transition from single-path two-direction transmission to single-direction transmission on each of two paths or ; vice versa 1
H04B0001590000 Responders; Transponders 1
H04B0001600000 Supervising unattended repeaters 1
H04B0001620000 for providing a predistortion of the signal in the transmitter and corresponding correction in the receiver, e.g. for improving the signal/noise ratio 1
จำนวนรหัสข้อมูล 15 จาก 73902