[BC] need a NON-technical explanation

[Barry Mishkind]

At 11:56 PM 11/11/2010, harold stanton wrote:
> When all this began, please remember that true single frequency control had yet to be developed.
> Operating "close" to your "assigned" or chosen wavelength was done with a free-running oscillator.

        The history of broadcasting includes 
        how the RI would come in and make 
        a mark on the front of the transmitter, 
        showing where the properly frequency 
        was located. Reports in the Radio Service
        Bulletins shows stations routinely operating
        up to "200 kc" off the assigned frequency,
        as that was often the best they could
        do until crystal control happened in 
        late 1920s

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