Abstract
The question of interference tones, in the case of a superheterodyne receiver, presents certain features not encountered in the case of non-heterodyne types of receivers. Briefly, the problem involves (1) the reception of at least three signals, (2) double detection, and (3) a filter action between the two detectors. In the case of rectification by detectors with generalized characteristics, quantitative analysis is extremely complex. The form of the result, however, shows how large is the number of possible sources of interference tones. The specific case of square-law rectification is considered also.
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