Production Sound & Video

Spring 2016

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20 and continue through the 21st. Two days wasn't nearly enough time for all that needed to be accomplished. But beginning rehearsals on the 20th was doable. Luckily, the antennas on Stage 23 had already been flown and the intermediate cables had been run. All that remained was to move the satellite rack into place on 23, move the master rack into place on 26 and balance the system through to that point. Stage 23 would require two Phoenix XIII systems. The high- range system would manage the bandwidth between 902 MHz and 960 MHz and the low-range system would manage the 500 MHz to 700 MHz bandwidth. At each antenna would be a dual-range filter set with two discrete antenna inputs. The high side would be fed by a Sidewinder antenna tuned to the 870 MHz to 900 MHz bandwidth. The low side would be fed by a Widowmaker antenna tuned to the 500 MHz to 700 MHz bandwidth. (Both of these antennas are proprietary Phoenix system designs.) This would be a twelve-antenna array system employing twenty-four antennas in all. The satellite rack itself would contain two control modules that fed two 30 dB line amplifiers for the high-range system and two control modules that fed two 20 dB line amplifiers for the low-range system. The outputs of each of the four line amplifiers would feed the corresponding inputs at the mas- ter control modules in the main rack on Stage 26. To balance the system would require the implementation of two devices, a Reference Transmitter Kit (RTK) and a Live Motion Simulator (LMS). The RTK is an assortment of trans- mitters tuned to the center frequency of the passbands being used. The transmitters are built into a small road case within two outputs; a high range and a low range. The RTK is then patched directly into a spectrum analyzer and the amplitude of each transmitter is noted on a system test form. The RTK is then unpatched and an output of the antenna system is patched in its place. The RTK then moves to one of the filter Thunder Road rehearsal on Stage 23 (Photo: Kevin Estrada/FOX) Above: Master RF rack explained. Right: The auto shop on Stage 23 (Photo: Kevin Estrada 2015)

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