Domo Tactical Communications Selected For Marathon Coverage

Domo Tactical Communications, formerly Cobham TCS, recently provided its SOLO HD transmitters and PRORXD 8-Way Diversity RF system for broadcast coverage of the 2015 Standard Chartered Marathon Singapore, and Standard Chartered Mumbai Marathon.

Domo technology was deployed for both marathons by Broadcast RF, who set up and managed the wireless camera coverage over diverse terrain for each race.

The Domo SOLO HD transmitters were fitted to three live chase motorbikes and multiple ground bases throughout both marathon courses. In Singapore, video from each was sent to four PRORXD 8-Way Diversity-equipped sites strategically mounted on high-rise rooftops, including Suntec 4 Tower, Marina Bay Sands hotel, and two sites in the East Coast Park Area of Singapore. The Suntec Tower served as the primary switching hub.

Richard Lambert, Dentsu Sports Asia Chief Technical Officer, said: "Broadcast RF has again delivered superior management of the very complex camera and transmission systems needed to cover one of the world's most diverse marathons. The images, from start to finish, were superb."

A similar set up was deployed in Mumbai, with the PRORXD receivers included their positioning atop two tall apartment buildings, as well as the 23-storey Air India building, which served as the main switching hub.

David Premier of Initium Productions, producer of the live coverage of the Standard Chartered Mumbai Marathon for Star Sports, commented: "We are always delighted with the performance of the Broadcast RF equipment and their on-site crew for our series of events. Mumbai is a difficult location to use anything but a ground-based terrestrial RF system and the new technology used for the Standard Chartered Mumbai Marathon was far beyond our expectations. Year-on-year improvements to the coverage they (Broadcast RF) supply us are made which keeps these guys at the top of the game here in India."

Ground-based terrestrial receive set ups are essential for such events because the use of relay aircraft in or near city centres is often highly restricted. Broadcast RF specialises in multi-site deployments, but live video transmission from multiple city sites can be difficult due to numerous high-rise buildings, underpasses, and sometimes dense foliage.

Coastal areas can be equally challenging due to low-rise structures and limited reflective surfaces. The Singapore Marathon in particular included both, but despite those obstacles, Broadcast RF's setup achieved flawless video coverage over 99% of the course.

"The only reason were weren't able to achieve 100 percent coverage in Singapore is that at one point the marathon runners go through a 1.1 km tunnel, but even then we only lost coverage for about 400 metres," Chris Brandrick, Broadcast RF Sales Director, explained. "The reliability and quality of the unbroken video delivered by the SOLO HD transmitters and PRORXD receivers was remarkable."

For both events, the primary received hub was established so that intelligent auto-switching technology could forward the live signals to a main OB site where the footage was mixed by the respective broadcaster and sent to air. The key was the Domo PRORXD 8-Way Diversity RF system, a multi-way diversity COFDM receiver designed to give less than two frames delay when working with Domo wireless camera transmitters. Its 8-way maximum ratio combining diversity RF inputs ensure video is recovered free from the distortions typically associated with fading and multipath interference.

Image: Standard Chartered Marathon Singapore.

(JP)