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Tussas Relies on WorldCast for Major STL Rollout

Broadcast operator conducts a massive renewal of distribution infrastructure

Radio World Buyer’s Guide articles are intended to help readers understand why their colleagues chose particular products to solve various technical situations. This month’s articles focus on products for audio transport including codecs and STLs.

Among its many business operations, telecommunications firm Tusass is the national operator for radio and TV in Greenland. 

At the beginning of the year, it began a massive rollout to renew its existing radio program and create a new national program, covering 70 sites in the country. 

This massive renewal for transmission and STL programs meant the acquisition of new Ecreso FM transmitters (for a total of 140) as well as acquiring a new network infrastructure for audio over IP transport

Overseeing the deployment from Tussas was Project Manager Bo Christensen, who told Ecreso parent WorldCast he was looking for robustness, all-in-one convenience and ease of use and maintenance.

An STL antenna site in Qaanaaq in northwestern Greenland. It is one of the northernmost towns in the world.

The network head end is composed of one APT Frame per program including redundancy at each level; first hardware-based with dual power supply and redundant AoIP modules to send audio over IP, as well as with software redundancy thanks to SureStream streaming technology.

At each transmitter site, a software-based APT IP Decoder receives the audio from a multicast server. This software IP decoder is hosted by Ecreso AiO series transmitters and is built on the source code of APT IP Codecs. Tussas also relies on WorldCast’s NMS platform, Kybio, for supervision of its radio network.

This project was validated in early 2022 and deployment is now complete. It was accompanied with on-site training as well as support for the first installation.
“Tusass now benefits from redundant, highly available STL links with the best audio quality and performances on the market while maintaining a low deployment cost and reduced maintenance needs,” WorldCast said in a project summary.

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