CPC Subgroup
H04J 1/02 Details
Full Title
Frequency-division multiplex systems (H04J14/00 takes precedence) > Details
7 direct subcodes
Child Classifications
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- H04J 1/04 Frequency-transposition arrangements
- H04J 1/06 Arrangements for supplying the carrier waves
- H04J 1/08 Arrangements for combining channels
- H04J 1/10 Intermediate station arrangements, e.g. for branching, for tapping-off
- H04J 1/12 Arrangements for reducing cross-talk between channels
- H04J 1/14 Arrangements providing for calling or supervisory signals
- H04J 1/16 Monitoring arrangements