DIFF Subgroup
H04L 27/24 Half-wave signalling systems
Introduced: September 1968
Full Title
Full titles differ between systems:
IPC:
Modulated-carrier systems > Phase-modulated carrier systems, i.e. using phase-shift keying > Half-wave signalling systems
CPC:
Modulated-carrier systems > Phase-modulated carrier systems, i.e. using phase-shift keying (H04L27/32 takes precedence) > Half-wave signalling systems
No child classifications to compare. This is a leaf node in both IPC and CPC.