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WIRELESS FIRST USES NEW CLAIR GLOBAL WIRELESS ANTENNA TO HANDLE EIGHTY-SIX RF CHANNELS AT ROCKEFELLER TREE LIGHTING CEREMONY

rockcenter_xmaslighting_2011.JPGNEW YORK, NEW YORK – DECEMBER 2011: When construction workers decorated a twenty-foot tree with paper garlands, cranberry strings, and the tinfoil ends of blasting caps in the early years of the Great Depression, they had no way of knowing they were starting a beloved holiday tradition. Today, the Rockefeller Center Christmas Tree in midtown Manhattan is a national symbol of the season. The tree’s lighting ceremony in late November has blossomed into a two-hour television special, complete with nostalgic hosts, the Radio City Rockettes, and performances by pop music icons, both contemporary and enduring. As in years past, NBC hired Wireless First, a Clair Global Company, to wrangle eighty-six channels of mission-critical wireless RF that spanned a full city block. In addition to an encyclopedic knowledge of all things RF and decades of in-the-trenches experience, Wireless First’s successful package included the new, innovative and reliable CF 1090 Fractal Antenna. Designed and manufactured by Wireless First/Clair Global, the CF 1090 employs a self-similar antenna topology to deliver high gain across a wide, uniform coverage pattern using a small, camera-friendly housing.

At this year’s live ceremony, the Today Show’s Al Roker and Savannah Guthrie were joined by musical guests Michael Bublé, Cee Lo Green, Faith Hill, Carole King, Katharine McPhee, and Javier Colon, while crooners young (Justin Bieber) and old (Tony Bennett) provided prerecorded performances. Individual performances, commentary, and interviews occurred throughout the block occupied by Rockefeller Plaza (bounded by 49th and 50th Street and 5th and 6th Avenue), which provided Wireless First chief engineer Josh Flower with a coverage challenge worthy of his skills and equipment. “We had multiple stages all over the plaza, and we had to deliver one-hundred percent coverage with zero dropouts,” said Flower. “The hosts were free to travel anywhere within that block, and an RF hit on such a high-profile show would be simply unacceptable.”

Wireless First’s eighty-six channels were divided among intercom, microphones (for performers and hosts), IFBs, and personal monitors. The live performers played on two stages, one on either side of the ice rink in front of the tree. “The trick was to zone out the receive antennas so that we had consistent coverage around the plaza without allowing the antennas to interfere with each other,” said Flower. “We set up three zones – one on 49th Street, one on 50th Street, and one in the Channel Gardens directly across from the tree – also using the same receive antenna system to feed both the intercom and the host microphones. That way, we knew anyone who had to transmit would do so to the same antenna system, ensuring the same range no matter what the device.”

Flower used Shure UA870 UHF active directional antennas for the receive side, taking advantage of its inline booster to compensate for line loss or even use line loss as an advantage to ensure that the antennas didn’t interfere with each other. On the transmit side, Flower flooded the area using the Clair Global CF 1090 Fractal Antennas. “The CF 1090 is very consistent throughout its coverage pattern,” he said. “I was able to place them in more TV camera transparent locations and still guarantee perfect coverage. Even though we were in the heart of New York City, every aspect of the system ended up being tremendously robust.” In total, three CF 1090s transmitted to thirty-two drops of wireless intercom, six IFBs, and sixteen channels of wireless personal monitors.

The show’s receiver and transmitter hardware was a mix of top-of-the-line Sennheiser and Shure products. The show hosts used Sennheiser SKM 5200 handheld wireless microphones. Flower gave them Sennheiser SK 5212 lavaliers for backup and added a redundant receiver rack across from the tree (incidentally, the CF 1090s acted as the receive antenna for these twelve channels). Neither safeguard proved to be necessary. The musicians switched between the two stages as needed to facilitate the show’s complicated logistics, and a collection of Shure UHF-R wireless microphones delivered the critical vocal inputs. On stage, Sennheiser 2000 and G2 Series wireless personal monitors inspired wonderful performances.

ABOUT WIRELESS FIRST, A CLAIR GLOBAL COMPANY Wireless First, a Clair Global Company, has decades of experience in handling wireless communications for television and theatrical productions, concert tours, corporate events and themed environments; servicing all the major television networks and production companies, including ABC, NBC, MTV, NBA, Buena Vista Pictures and Radio City Productions. Under the auspices of Kevin Sanford, Wireless First has offices in Mt. Vernon New York, Nashville and Los Angeles. www.clairglobal.com

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