Tony Meloche wrote:


The engineers made a tremendous accomplishment with wideband AM stereo.
The consumer shrugged.

The engineers made a tremendous accomplishment with CD technology.
The consumer was ecstatic.


There was a marketing plan developed by Phillips and Sony (CD
inventors) to make sure that both media and players would be available
at the same time.

They were doing this specifically in a reaction to what happened to
quadraphonic stereo (remember that?) when the media, stations,
receivers and multiple incompatible broadcast formats doomed it.

I suggest that something like that happened with AM stereo. How many
AM stations were willing to make the investment in the equipment? How
many buyers were willing to buy a receiver for perhaps 1 station in
their area, which might not broadcast their desired programming?
--
Eric F. Richards

"Nature abhors a vacuum tube." -- Myron Glass,
often attributed to J. R. Pierce, Bell Labs, c. 1940