CPC Subgroup
H04B 14/02 characterised by the use of pulse modulation (in radio transmission relays H04B7/17)
Full Title
Transmission systems not characterised by the medium used for transmission (details thereof H04B1/00) > characterised by the use of pulse modulation (in radio transmission relays H04B7/17)
4 direct subcodes
Child Classifications
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- H04B 14/04 using pulse code modulation
- H04B 14/06 using differential modulation, e.g. delta modulation