Profile: Arcom Laboratories, Inc. produces all types of single and multiple channel traps and band segmentation filters, return band noise suppression filters, cable equalizers, addressable switches, addressable converters, NICAM and A2 stereo encoders. We are engaged in the development of drop noise devices designed to selectively clean up the reverse path. The WHP filter only passes the part of the spectrum where transmission over the reverse path is desired, and removes other portions of the return path to eliminate undesirable noise. Step attenuators provide a universal non-application specific solution to return path noise problems. Various levels of fixed attenuation below the required cutoff frequency are available, with minimal insertion loss at frequencies above the cutoff. Units are typically fitted between the multi-tap output port and the subscriber drop. This provides wide band noise suppression of all the return path frequencies. Our step attenuators offer several advantages over traditional high-pass or windowed filters. The step attenuator value is selected to complement the multi-tap value and system design, thus balancing the return path attenuation to a predetermined value.