A system for inhibiting a potential interference source in a communications system. The system includes a first mechanism for incorporating a code within a signal. A second mechanism employs the code to decode the signal. A third mechanism for selectively prevents detection by the second mechanism of a subsequent signal employing the code. In a specific embodiment, the third mechanism incorporates a predetermined delay after receipt of the signal by the second mechanism. The predetermined delay is sufficient to prevent detection by the second mechanism of the subsequent signal employing the code. The code is a function of a time value associated with the signal. The subsequent signal incorporates the code and lacks a corresponding accurate time value due to the predetermined delay. Consequently, rebroadcast of the subsequent signal, which is a delayed signal, is less likely to interfere with the system communications.