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With the rapid development of television media, live news events as reported in the most efficient means, has been increasingly used by all the stations. News events to enhance rapid response capacity, the construction of a small number of mobile broadcast truck, of course, refers to the work of Jilin TV schedule. In considering the car to a good mobility, body size is small, convenient and flexible, safe, reliable and economical context, we identified the car's body using Transit JX6545-H, wireless video transmission equipment by Beijing Electronics limited liability company SZ -1 high-speed mobile wireless image transmission system, wireless camera to use Ikegami 388 + GIGAWAVE's D-CAM transmission equipment, vehicles and stations with car phone calls, live cars in early December 2005 in Beijing, TIH broadcast audio and video, Ltd. completed the installation of equipment, now from Jilin city television channels. From January 1, 2006 since the official use, a total of more than 300 live television shows. Achieved good social effects. Keywords ADTB-T broadcast vehicle intercom systems Modulation Digital mobile television broadcast trucks Jilin Introduction 2005 month, Jilin city television channel planned for 2006 New Year's Day on the revised channel, news channel from the city people's livelihood of the urban channel to broadcast channel transformation. In line with the channel's revision, commissioned a technical office in Taiwan, the purchase of a digital mobile broadcast trucks. After nearly four months of preparatory work, on October 10, 2005 tender. We look at the following aspects digital broadcast vehicle design and equipment selection: 1, the body of the selection and design We chose domestic Transit JX6545H, as a live vehicle chassis. Vehicle wheelbase: 3570mm; Overall dimensions: 5368 × 1774 × 2620; Rated load: 1300kg; fuel: gasoline. Live vehicles to achieve the requirements, but also on the body was modified. With the steel skeleton of the car were reinforced to increase strength. Using cut off the body into the work space and the rear cabin. Installation of wireless cameras roof platform receiving antenna, transmitting antenna transmission equipment. Using the wireless camera PTZ control pitch and level of the receiving antenna rotation controlling transmission equipment transmitting antenna of the pitch. And the four corners of the roof platform with four venues lights 12V DC power supply, separate control. 2, as the audio system Video switcher, wireless cameras and other equipment composition. Live vehicle equipped with 2 sets of wireless camera is purchased in 2001 in Taiwan, the utilization rate has been low, so we transfer these two cameras to broadcast traffic. Ikegami HK388 wireless camera head is a camera, the wireless part is GIGAWAVE's D-CAM equipment. 3, intercom systems Call the system calls used Clearcom's equipment, including: a two-channel call master station: MS-232; 1 Car Mobile Phone: Motorola L8989 dual-band car phone; a set of wireless calls: 2 sets of GR1225 and other equipment . Using wired communication and wireless communication systems combined. Microwave broadcast vehicles will more than were in the studio with Taiwan to achieve duplex wireless communication; car director and camera staff and presenters of the independent call (wireless), and Taiwan within the host and remote site host to achieve interaction. 4, power system Live car distribution is very important, so the car's power system uses 220V electricity, UPS and generator three-way powered vehicle mode. Generator used is ultra-quiet Yamaha inverter generator Gasoline EF3000iFE, generator fuel tank and fuel tank body attached to the tank through the pump body fuel tank for generator fuel supply, not only improves the safety of generators may be extended for another Electrical time; UPS selection of Mountain brand, live vehicle for providing 2 hours of electricity. Usually live or move directly to the device when using the generator power point failure in the generator can be 220 volts AC through the UPS to the equipment after the power supply voltage regulator can also be a separate UPS for the live broadcast through the vehicle equipment for power. This car's power supply for the live broadcast and flexibility to provide a strong guarantee. The e-commerce company in China offers quality products such as mechanical alarm watch , mechanical wrist watch, and more. For more , please visit skeleton mechanical watch today!
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