How to increase a coverage zone?
A very big influence on a coverage zone makes transmitting antenna. Rise of the antenna above nearby houses can strongly increase a zone of service by 5 meters: it is equivalent to increase in capacity of the transmitter approximately in 10 times. The transmitter with 25 Wt amplifiers, at use of the antenna with factor of amplification 10 дБ is equal to the transmitter with radiation capacity 250 Wt.By consideration of a problem of increase in a cover zone nevertheless it is necessary to remember, that the maximal capacity of the used equipment is limited to the factor of electromagnetic compatibility and similar questions should be solved together with CEMC.
FAQ
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Is it required to obtain permission to use the GPS receiver?
No appropriate registration of the permission of the SUE CEM...
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Do I need to re-obtain permits for purchase and installation if the previous owner had these documents?
According to clause 87 "Regulations on the procedure fo...
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Are there any simplifications of the procedure and reduction of the time required for issuing permits for the use of the radio frequency bands 71-76 GHz and 81-86 GHz?
By the decision of the Republican Council on Radio Frequenci...
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Do I need any documentary, licensing or other design for the distribution of the Internet via Wi-Fi indoors? If so, who should you contact? What are the deadlines for registration?
In accordance with the decision of the RCRS No612 of October...
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How to obtain international legal protection from harmful interferences from neighboring states?
International legal protection of radio frequency assignment...
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What are the main measures for the international legal protection of radio frequency assignments of radio electronic means in the Republic of Uzbekistan?
- determining the need for and conducting international coor...
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What radio frequency assignments of RES are subject to mandatory international coordination and registration with ITU?
All radio frequency assignments are subject to international...
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What is radio frequency assignment coordination?
the procedure for obtaining the consent of one of the Partie...
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What range is used for FM broadcasting in the Republic of Uzbekistan?
Тhe 87.5–108.0 MHz
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What bandwidth is used in the DVB-T2 standard?
1,7; 5; 6; 7; 8 and 10 MHz. The Republic of Uzbekistan uses ...
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How many digital TV channels can be broadcast in a single 8 MHz wide TV channel in the DVB-T2 standard?
Depending on the quality of the transmitted image. For stand...
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What is the DVB-T2 standard?
European standard of terrestrial digital television of the s...
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Why is the radio communication in the room unstable or not at all?
A stable indoor connection cannot be achieved since the wall...
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Is it possible to achieve stable communication inside multi-storey buildings?
There are now special (500 mVt) repeaters that amplify cellu...
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How to increase a coverage zone?
A very big influence on a coverage zone makes transmitting a...
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How far it is audible 5 Watt on VHF?
There is no unequivocal answer to this question. If distance...
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There are lots of free tele-channels in the city, i.e. having adjusted on their reception you can not see any transfer, however channel is not assigned us to use. Why?
The zone of stirring influence of TV (or radio broadcasting)...
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How can I get a topograpgic map with a scale 1:200000 that is necessary in different needs?
Question: How can I get a topographic map with a scale1:200...
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Who can help me to null radio-interferences, which interrupt reception of television and radio programs? What are the means of dejamming?
1. Users of radio-frequency spectrum can make their requests...
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What are the terms for examination of a request?
1. The term for examination of a request begins from a day o...
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Evaluation of H.264/AVC codec (By Thomson firme data)
September 2005y. the 2nd half of 2006y. the 2nd half o...
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Satellite paths
Transponder 36 МHz; bitrate for MPEG-2: 4,4 Мbit/s (ТSC), 18...
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What are the penalties for using and sale of not registered radiotelephone extenders, such as VOJAGER, SENAO, BADA, SONY, NOKIA, MOTOROLA, HARVEST, etc.?
The resolution of The Cabinet of Ministers of the Republic o...
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What radio-electronic devices do not need any permission to use them in the Republic of Uzbekistan?
The list of radio-electronic equipment and high-frequency de...
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What gives transferring to the digital dispersion?
The main advantages: standing quality at the cost of incr...
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Countries, where DVB-H system was brought to the regular exploitation
Albania – national network, in 23.01.2007 was covered more ...
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ETSI standards to DVB-H system
ETSI EN 302 304 V1.1.1 (2004-11) Digital Video Broadcasting...
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Transfer speed of DVB-H system
Receiver type H.264/AVClevel Video resolution Max. spee...
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DVB-T/H transmitting regime
OFDM characteristics Regime 2k 4k 8k Number of sup...
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Opportunities of H.264/AVC standard
Use of script Resolution and frequency frames Transmitt...
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Manufactures of MPEG-4 equipment
Company Equipment Envivio Inc. 4Caster HD3 – THC tran...
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What is the order of acquisition and exploitation of radio electron means, meant for organization of interoffice network of data transmission on the base of Wi-Fi technology in the territory of Uzbekistan Republic?
Due to the frequently asked questions about the order of acq...
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DVB-H (Digital Video Broadcasting – Handhelds)
DVB-H is aimed for transmitting to handheld terminals the fo...
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History of DVB-H system engineering
DVB-H system – the newest creation of DVB standards The act...
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Motivation of DVB-H engineering
Demand of majority on getting news and video data streams o...
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Characteristic of DVB-H system
Based on DVB-T, full backward compatibility Adds additional...
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Means of providing technical request to DVB-H system
Time slicing of datacome for energy conversation in receive...
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Peculiarity of DVB-H system’s work
DVB-H system can work as аn independent broadcasting system ...
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Frequency peculiarities of DVB-H system
Bands: III (174 – 230 MHz), IV (470 – 582 MHz),V (582 – 862...
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Frequency peculiarities of DVB-H system
According to ECC REPORT 4 (Lisbon, January 2002) IV band is...
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Frequency peculiarities of DVB-H system
The option is entered into the standard on system DVB-T for...
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Spectral effectiveness of DVB-H system
In DVB-T/H system can be delivered to mobile terminals of 3...
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Example for QVGA (320x240 pixel.), 25 frame/s, 250 Kbit/s
DVB-H system channels DVB-H the main factors Number of ...
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Time slicing and data carrousel
Instead of continuous data transmission as in DVB-T, in DVB...
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Example of time slicing
If the average speed of basic stream transmitting is 500 kb...
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Model buffered data of hypothetical receiver DVB-H
1 – transport stream; 2 – transport stream without duplica...
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DVB-H network transmitting
Typical use of DVB-H system – it is IP-data transmitting se...
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Script of development
For the next slides given examples of network configuration:...
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Coding content in H.264/MPEG 4.10 AVC standards
Joint МСЭ-Т/ИСО/МЭК H.264/MPEG-4 Part 10 AVC (H.264/AVC, IS...
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Peculiarities of H.264/AVC
At identical quality of the image standard H.264/AVC demand...
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Transportation to H.264/MPEG 4.10 AVC
Transport level is not specified on MPEG-4 standard. Most of...
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Recommendation of Europe
According to EBU (Tech 3307 “Service Requirements for Free-...
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