Testing on the ground the system of digital broadcasting standart DVB-T TV Village
The system of digital broadcasting standard DVB-T TV Village for cottage settlements successfully tested on the ground. System configuration is as follows:
1. Four of the modulator 8ASI/DVB-T with the parameters QAM-64 2K, FEC ¾, and delta 1/8. Each modulator is formed two carriers in the UHV range. 2. Combiner forms a group spectrum of the eight carriers in the UHF range. All eight channels were were placed at 8 MHz in the range 650-706 MHz. 3. Linear power amplifier design with Output power 10 watts, providing a level MER no worse 34 dB for each of the 8 channels. 4. The antenna system consists of 3 panels with a gain of 11 dB in the UHF range, splitter power for 3 and cable the length of 60 meters.
The receiver unit is used with Promax active receiving antenna.
The system provided a confident coverage radius of 7 km. The signal was received as fixed point through woodland and in the car at the speed of 160 km / h in the presence of line of sight.
System TV Village can be used in cottage settlements and small towns as a low-cost system for digital television broadcasting. The equipment is designed and produced by DV-Lab and Radiofar & Co. |
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