Abstract: A programmable interference system for use with clustered radio transmitters and receivers operating aboard aircraft, as well as seafaring or land based installations, and which may interfere with each other. The invention uses a central processing unit with associated memory which provides pulse treatment including delay and/or extension of the blanking pulses as generated by the radio transmitters and such that the pulse treatment may be programmed by preselecting and storing the parameters of the pulse treatment in the memory from where they may be called into operation to control variable delay and extension circuit elements. The invention is especially suited to operate with aircraft having a multiplex bus that carries all the control data from flight controls as well as from the cockpit on a time divided multiplexed basis.