INTERCONNECTING CIRCUIT MATCHING EQUIPMENT.

Low-frequency cables are widely used to provide interconnecting circuits between the radio bureau and the radio centers at short-wave radio communication terminals. The frequency characteristics of the interconnecting cable circuits are not equalized in the majority of cases which results in distortion of the transmitted signals and a reduction in the quality of the communication services. Equipment was developed for matching interconnecting circuits (ICME) which takes into account the specific nature of the construction and operation of the low-frequency channels of radio communication terminals. The ICME consists of an attenuator, an equalizer and an amplifier. The principles of equipment design are discussed.