Carrier-current telephone and telegraph equipment of the new bass strait submarine cable system

The submarine telephone cable system between the Australian Mainland and the island State of Tasmania is described. The cables are of the type employing a single non-loaded central conductor with coaxial return. Six telephone circuits and a programme circuit are provided together with telegraph facilities. The terminal and intermediate circuits and equipment are described, and the land line extensions on the mainland and in Tasmania are dealt with. The system represents the first case in which amplifiers of the reversed feed-back type have been used in commercial practice. Overall transmission results are given.