[BC] AM Stereo

Barry Mishkind barry at oldradio.com
Tue Nov 23 20:27:40 CST 2010


At 07:03 PM 11/23/2010, Kyle Magrill wrote:
>You have to ask how the test was conducted.  

        I believe it was the same cut on AM and FM.
        Listeners were in a car.

>In the end, it was the frequency response of AM that killed it, not the choice of which stereo system was selected. Kahn or Motorola,  Two channels of 4kHz audio is just 2x as bad as one.

        I can't speak to the exact freq response
        of AM stereo, although it was, at least
        on my radio, wider than standard AM.

        But, then again, what we as professionals
        call fidelity may NOT be what listeners 
        prefer for their audio. While I am definitely
        for putting out as clean a sound as possible,
        it is also true that no successful radio station
        really has more than a 10 15 dB dynamic
        range. Can't be.  It would "disappear" in 
        a car during operation.

>And for the record, I never thought that the NRSC did AM any favors by forcing the spectrum to 10kHz.

        Agreed. It was past of a "truce" in the Modulation
        Wars - which the tech community should
        never have stood for.

        barry 



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