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Bill to save AM Radio advances in U.S. House

Kelly A said:
Leonard felt his ISB system should have been chosen, so when the Magnavox system was, he decided to sue literally every one of the competing systems
and the FCC.
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Adding to that: After some delay, the FCC responded by allowing the marketplace to decide. By the time C-Quam became the de-facto standard, it was too late and by the time it was made official, in 1993, the whole concept had been dead for years!
 
semoochie said:
Adding to that: After some delay, the FCC responded by allowing the marketplace to decide.
Click to expand...
The Commission did that because of Leonard suing. Opening it up and letting broadcasters make the final decision, allowed for Leonard's lawsuit to be dismissed.
semoochie said:
By the time C-Quam became the de-facto standard, it was too late and by the time it was made official, in 1993, the whole concept had been dead for years!
Click to expand...
Technically the Magnavox system was a form of CQUAM. It's just that once Leonard started suing everything that moved and the FCC retracted their selection
Magnavox bowed out of the AM stereo competition. They rightfully found that when it came to how many AM stereo systems would likely be sold, the juice wasn't worth the squeeze. Motorola continued selling their CQUAM systems, but even then found they weren't selling enough to keep going.
 
MarioMania said:
AM Stereo, what really happened

Did Leonard Khan really delay AM Stereo by getting mad the FCC didn't pick his system
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When the FCC approved a different system in the late 1978/79 proceeding, he sued and prevented the system from being accepted. It was not until nearly 5 years later when it was too late: 80% of the music listening had gone to FM
 
Doing a little readingon this, and I found a tidbit from piece in the archives of "Audio" magazine.

This from nearly 50 years ago (January 1975):
Since AM does not require line-of-sight reception as FM does, it is easy to conclude that if AM stereo does become available and practical in the U.S., it will be preferable for automobile listening and a valuable addition to a home sound system for its varied programming.
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Source: pg 30 of this PDF from David's archive: https://www.worldradiohistory.com/Archive-All-Audio/Archive-Audio/70s/Audio-1975-01.pdf

Talk about wishful thinking!
 
I wasn't a heavy AM radio listener until 1984-10 (AM only car radio), IIRC, KMBZ AM used the Kahn AM stereo system in the early 1980s, I listened on an analog tuned car radio briefly and heard an AM stereo promo state that 2 AM radios could be used to hear KMBZ AM in stereo, I didn't have 2 radios at the time to try this, did/does it actually work?


Kirk Bayne
 
kfbkfb said:
I wasn't a heavy AM radio listener until 1984-10 (AM only car radio), IIRC, KMBZ AM used the Kahn AM stereo system in the early 1980s, I listened on an analog tuned car radio briefly and heard an AM stereo promo state that 2 AM radios could be used to hear KMBZ AM in stereo, I didn't have 2 radios at the time to try this, did/does it actually work?


Kirk Bayne
Click to expand...
Absolutely! I listened during the XETRA tests in the early 1970s and described it at the time as FM stereo with the door shut.
 


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