Indeed, Joe, when run properly (at a 4 to 1 ratio), low-level
modulated, linear-amplified AM has way less audible distortion that
traditional plate-modulated AM.
This is also backed by the numerous operators running low-level Kenwood
TS-850 rigs in AM mode into high-linearity amps. Many have modified the
TS-850 with ultra-high-quality Jensen audio transformers such that they can
couple professional, line-level audio (i.e., balanced +4 dBu) to the (by
unbalancing) balanced modulator. When these guys check into the various AM
nets, the audio quality is so good, most swear they are running
plate-modulated AM transmitters.
-Paul, W9AC
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