The equipment described in t To obtain the maximum efficiency when modulating a transmitter the modulation depth must be kept as high as possible for as much of the time as possible. This means that the modulating signal ampli-tude must be kept reasonably constant. Since speech most definitely does not have a constant amplitude some form of processing is called for. his article converts morse coded infor-mation into normal alphanumeric characters (letters and numerals), thus considerably simplifying the reception of morse messages
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