IPC Main Group
H04B 14/00 Transmission systems not characterised by the medium used for transmission
Introduced: January 1985
Last revised: January 2006
Classification Context
- Section:
- ELECTRICITY
- Class:
- ELECTRIC COMMUNICATION TECHNIQUE
- Subclass:
- TRANSMISSION
Scope Notes
Limiting references: Details of transmission systems not characterized by the medium used for transmission
2 direct subcodes
Child Classifications
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- H04B 14/02 characterised by the use of pulse modulation
- H04B 14/08 characterised by the use of a sub-carrier