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PCE
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DIFF Subgroup
H04J 1/04

Frequency-transposition arrangements

Introduced: September 1968

Full Title

Full titles differ between systems:

IPC:

Frequency-division multiplex systems > Details > Frequency-transposition arrangements

CPC:

Frequency-division multiplex systems (H04J14/00 takes precedence) > Details > Frequency-transposition arrangements

Of 2 combined children, 1 exist in both systems.

1 codes are CPC-only extensions.

IPC defines codes here since 1980.

Child Classifications

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  • H04J 1/045 CPC only CPC only
  • H04J 1/05 using digital techniques since 1980 IPC+CPC Available in IPC and CPC