But the point is that the effort was made by the broadcaster and it appears that this was more than just “marketing hype”. I suspect that a few people in the area owned Scott and other wide bandwidth radios available at that time. Indeed, it is likely that few listeners could detect the difference, but some could.
It appears that most efforts to “improve” AM broadcasting audio quality have really met with poor consumer response:
Hi-Fi AM
AM Stereo
AM Max
HD AM