DIFF Subgroup
H04H 20/65 Arrangements characterised by transmission systems for broadcast
Introduced: January 2008
Full Title
Arrangements for broadcast or for distribution combined with broadcast > Arrangements characterised by transmission systems for broadcast
IPC and CPC are identically structured here. All 4 subcodes exist in both systems.
IPC defines codes here since 2008.
Child Classifications
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- H04H 20/67 Common-wave systems, i.e. using separate transmitters operating on substantially the same frequency since 2008 IPC+CPC Available in IPC and CPC