Australia (March 7, 2016)—Raycom, representatives for Wisycom in the U.K., outfitted more than five million square feet of Australian jungle with Wisycom RF technology for ITV’s reality television show, I’m A Celebrity…Get Me Out Of Here!
For the production, Raycom supplied 40 Wisycom LNNA active antennas, coupled with a number of Wisycom MAT288 programmable RF matrix combiners, one of the largest systems of its kind. The LNNA antennas were installed around the site and fed back through a number of MAT288s, providing the most suitable solution for the production.
“A system this large required extreme care to make sure the gain structure was correct to maintain the dynamic range throughout the system,” says Pyers Easton, managing director of Raycom. “This ensured the system was free from overload and did not introduce noise. The system also had a high degree of redundancy, protecting the entire system from a dropout if an antenna was to fail. Raycom was confident in the refined equipment and technology that Wisycom has to get the job done.”
The MAT288 enables specific coverage areas to be selected on the front panel, or remotely, in addition to allowing gain control where required. DC power was provided for active antennas, along with voltage and current measurement to provide remote diagnosis of antenna feeder issues. For other non-permanent locations, another pair of antennas fed back to the studio using a Wisycom BX1 Fiberbox plug-and-play RF-over-fiber system.
The entire system was broadband and unfiltered, and the antennas covered from 470 to 870 MHz. With 5W walkie talkies on 515 MHz that could potentially be in close proximity to the antennas, the large signal handling of the amplifiers was critical, as any overload could cause serious loss of signal. In the finished system the combined noise floor was -112 dBm with no overload, even when levels were up to 20 dBm with a walkie-talkie right under an antenna.