R&D Report 1963-14 : Television co-channel interference: Some effects of the modulation of the interfering signal. E.W. Taylor The configuration of the interference pattern produced when a television transmission suffers co-channel interference from another television signal is examined in detail, in order to determine the process by which the interfering modulation gives rise to additional patterns. The description of these patterns in terms of the carriers and side-bands of the two signals is discussed for the two cases of "non-precision" and "precision-best" offset operation.