Kendall effect
In
telecommunication, a
Kendall effect is a spurious pattern or other
distortion in a
facsimile record copy caused by unwanted
modulation products arising from the
transmission of a
carrier signal, and appearing in the form of a rectified
baseband that interferes with the lower
sideband of the carrier.
Note: The Kendall effect occurs principally when the single-sideband width is greater than half of the facsimile carrier frequency.
Source: from Federal Standard 1037C and from MIL-STD-188