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PCE
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DIFF Subgroup
H03C 3/28

using variable impedance driven mechanically or acoustically

Introduced: September 1968

Full Title

Full titles differ between systems:

IPC:

Angle modulation > by means of variable impedance > using variable impedance driven mechanically or acoustically

CPC:

Angle modulation (H03C5/00, H03C7/00 take precedence) > by means of variable impedance (H03C3/30 - H03C3/38 take precedence) > using variable impedance driven mechanically or acoustically

No child classifications to compare. This is a leaf node in both IPC and CPC.