How much do you know about the satellite TV live broadcast system (DBS)

According to the definition of the International Telecommunication Union (ITU), direct broadcast satellites are dedicated satellites used for broadcasting satellite services (BSS), and the so-called direct broadcast satellite system (DBS) refers to a direct transmission of broadcast and television programs to the home using direct broadcast satellites. Emerging transmission system. Direct broadcast satellites are different from the general communication satellites that are now widely used. In addition to the characteristics of general communication satellites, it has the following characteristics:

　　 1. The TV signal beam coverage planned by the direct broadcast satellite is protected by the International Telecommunication Union (ITU). According to the ITU's plan, my country belongs to three regions. The downlink frequency band KU of direct broadcast satellites is 11.7～12.2GHz, and it is allocated to 3 direct broadcast satellite orbital positions in my country (62°E, 80°E, 92°E). The ITU also stipulates that the planned permitted frequency bands and planned permitted beam coverage of various countries are protected by the ITU; when DBS is designed, countries must minimize the radio wave radiation to the territories of other countries, unless they are permitted by the relevant national authorities.

　　 2. Direct broadcast satellite broadcast and TV signals can be directly received by families. The direct broadcast satellite has high radiation power and high EIRP value in the coverage area, so its receiving system is simpler, smaller and cheaper than the general communication satellite receiving system. Coupled with the application of digital technology with bit rate compression as the core, users only need to use 0.45 A parabolic antenna with a diameter of about m, using a dedicated satellite receiver (IRD) and a remote control, can directly receive more than 100 sets of high-quality broadcast and television programs. 3. The broadcast and TV signal of direct broadcast satellite has the deficiency of rain attenuation. The transponder of the direct broadcast satellite works in the KU frequency band (11.7～12.2GHz), which will cause the phenomenon of rain attenuation, but it can be improved by appropriately increasing the aperture of the receiving antenna.

It is these characteristics of direct broadcast satellites that enable the direct broadcast satellite system (DBS) to solve the problems of radio and television coverage in mountains, rivers, lakes, island areas, farming and pasture areas, and old, young, border and poor areas. Unparalleled advantages of the method. The system has the advantages of low investment, quick results, wide coverage, low receiving cost, and easy to develop integrated services of image and data information. The Chinese government has taken the satellite live broadcast system as the main way to achieve the strategic goal of the "Village Connect" TV project. According to the overall plan drafted by the State Administration of Radio, Film and Television: KU communication satellite frequency band (12.25～12.75GHz) will be used in 1999, and live broadcast will be used after 2000. The satellite-dedicated KU frequency band (11.7～12.2GHz) is used for satellite live broadcast experiments. The first phase of the “Village Link” project has been successfully launched on New Year’s Day in 1999. A KU-band 2A satellite transponder of the Xinnuo 1 communication satellite was rented. Digital compression method (MPEG2/DVB-S standard) transmits 8 sets of CCTV programs (multi-channel single carrier MCPC) and 8 sets of broadcast programs (MUSICAM method) for satellite live broadcast, and purchases 10,000 sets of KU-band small satellite ground receiving stations, Donated to 10,000 national-level poverty-stricken villages. It can be seen that the satellite live broadcast system will flourish at a faster speed in the future.

 

 

 

How far(long) the transmitter cover? The transmission range depends on many factors. The true distance is based on the antenna installing height , antenna gain, using environment like building and other obstructions , sensitivity of the receiver, antenna of the receiver . Installing antenna more high and using in the countryside , the distance will much more far. EXAMPLE 5W FM Transmitter use in the city and hometown: I have a USA customer use 5W fm transmitter with GP antenna in his hometown ,and he test it with a car, it cover 10km(6.21mile). I test the 5W fm transmitter with GP antenna in my hometown ,it cover about 2km(1.24mile). I test the 5W fm transmitter with GP antenna in Guangzhou city ,it cover about only 300meter(984ft). Below are the approximate range of different power FM Transmitters. ( The range is diameter ) 0.1W ~ 5W FM Transmitter ：100M ~1KM 5W ~15W FM Ttransmitter : 1KM ~ 3KM 15W ~ 80W FM Transmitter : 3KM ~10KM 80W ~500W FM Transmitter : 10KM ~30KM 500W ~1000W FM Transmitter : 30KM ~ 50KM 1KW ~ 2KW FM Transmitter : 50KM ~100KM 2KW ~5KW FM Transmitter : 100KM ~150KM 5KW ~10KW FM Transmitter : 150KM ~200KM How to contact us for the transmitter? Call me +8618078869184 OR Email me [email protected] 1.How far you want to cover in diameter ? 2.How tall of you tower ? 3.Where are you from ? And we will give you more professional advice. About Us FMUSER.ORG is a system integration company focusing on RF wireless transmission / studio video audio equipment / streaming and data processing .We are providing everything from advice and consultancy through rack integration to installation, commissioning and training.   We offer FM Transmitter, Analog TV Transmitter, Digital TV transmitter, VHF UHF Transmitter, Antennas, Coaxial Cable Connectors, STL, On Air Processing, Broadcast Products for the Studio, RF Signal Monitoring, RDS Encoders, Audio Processors and Remote Site Control Units, IPTV Products, Video / Audio Encoder / Decoder, designed to meet the needs of both large international broadcast networks and small private stations alike.   Our solution has FM Radio Station / Analog TV Station / Digital TV Station / Audio Video Studio Equipment / Studio Transmitter Link / Transmitter Telemetry System / Hotel TV System / IPTV Live Broadcasting / Streaming Live Broadcast / Video Conference / CATV Broadcasting system.   We are using advanced technology products for all the systems, because we know the high reliability and high performance are so important for the system and solution . At the same time we also have to make sure our products system with a very reasonable price.   We have customers of public and commercial broadcasters, telecom operators and regulation authorities , and we also offer solution and products to many hundreds of smaller, local and community broadcasters .   FMUSER.ORG has been exporting more than 15 years and have clients all over the world. With 13 years experience in this field ,we have a professional team to solve customer's all kinds of problems. We dedicated in supplying the extremely reasonable pricing of professional products & services. Contact email : [email protected] Our Factory We have modernization of the factory . You are welcome to visit our factory when you come to China. At present , there are already 1095 customers around the world visited our Guangzhou Tianhe office . If you come to China , you are welcome to visit us . At Fair This is our participation in 2012 Global Sources Hong Kong Electronics Fair . Customers from all over the world finally have a chance to get together. Where is Fmuser ? You can search this numbers " 23.127460034623816,113.33224654197693 " in google map , then you can find our fmuser office . FMUSER Guangzhou office is in Tianhe District which is the center of the Canton . Very near to the Canton Fair , guangzhou railway station, xiaobei road and dashatou , only need 10 minutes if take TAXI . Welcome friends around the world to visit and negotiate . Contact: Sky Blue Cellphone: +8618078869184 WhatsApp: +8618078869184 Wechat: +8618078869184 E-mail: [email protected] QQ: 727926717 Skype: sky198710021 Address: No.305 Room HuiLan Building No.273 Huanpu Road Guangzhou China Zip:510620 English: We accept all payments , such as PayPal, Credit Card, Western Union, Alipay, Money Bookers, T/T, LC, DP, DA, OA, Payoneer, If you have any question , please contact me [email protected] or WhatsApp +8618078869184 PayPal.  www.paypal.com We recommend you use Paypal to buy our items ,The Paypal is a secure way to buy on internet . Every of our item list page bottom on top have a paypal logo to pay. Credit Card.If you do not have paypal,but you have credit card,you also can click the Yellow PayPal button to pay with your credit card. --------------------------------------------------------------------- But if you have not a credit card and not have a paypal account or difficult to got a paypal accout ,You can use the following: Western Union.  www.westernunion.com   Pay by Western Union to me : First name/Given name: Yingfeng Last name/Surname/ Family name: Zhang Full name: Yingfeng Zhang Country: China City: Guangzhou  --------------------------------------------------------------------- T/T .  Pay by T/T (wire transfer/ Telegraphic Transfer/ Bank Transfer)  First BANK INFORMATION (COMPANY ACCOUNT): SWIFT BIC: BKCHHKHHXXX Bank name: BANK OF CHINA (HONG KONG) LIMITED, HONG KONG Bank Address: BANK OF CHINA TOWER, 1 GARDEN ROAD, CENTRAL, HONG KONG BANK CODE: 012 Account Name : FMUSER INTERNATIONAL GROUP LIMITED Account NO. : 012-676-2-007855-0 --------------------------------------------------------------------- Second BANK INFORMATION (COMPANY ACCOUNT): Beneficiary: Fmuser International Group Inc Account Number: 44050158090900000337 Beneficiary's Bank: China Construction Bank Guangdong Branch SWIFT Code: PCBCCNBJGDX Address: NO.553 Tianhe Road, Guangzhou, Guangdong,Tianhe District, China **Note: When you transfer money to our bank account, please DO NOT write anything in the remark area, otherwise we won't be able to receive the payment due to government policy on international trade business. * It will be sent in 1-2 working days when payment clear. * We will send it to your paypal address. If you want to change address, please send your correct address and phone number to my email [email protected] * If the packages is below 2kg,we will be shipped via post airmail, it will take about 15-25days to your hand. If the package is more than 2kg,we will ship via EMS , DHL , UPS, Fedex fast express delivery,it will take about 7~15days to your hand. If the package more than 100kg , we will send via DHL or air freight. It will take about 3~7days to your hand. All the packages are form China guangzhou. * Package will be sent as a "gift" and declear as less as possible,buyer don't need to pay for "TAX". * After ship, we will send you an E-mail and give you the tracking number. For Warranty . Contact US--->>Return the item to us--->>Receive and send another replace . Name: Liu xiaoxia Address: 305Fang HuiLanGe HuangPuDaDaoXi 273Hao TianHeQu Guangzhou China. ZIP:510620 Phone: +8618078869184 Please return to this address and write your paypal address,name,problem on note:

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