A leading US Cable Operator has recently upgraded a Digital Microwave Backbone network designed to transport 256-QAM modulated carriers from the Cable TV Headend to eight local cable systems.

The company upgraded an old FM backbone with a state-of-the-art Cable AML microwave system consisting of a broadband transmitter at the headend, and a repeater at 18.3 miles – feeding two additional transmitters for final relay to 8 different cable systems located in eight different localities.The digital backbone covers a total distance of 61.3 miles from the Headend to the most distant receiver.

With the backbone in place, the Cable Operator is now providing a large number of digital programs to a significant number of customers spread over a large area. Cable AML designs and manufactures broadband microwave systems for transmission of multichannel digital Cable TV signals to locations difficult to access or too far to be accessed by fiber or coaxial cable.