| 摘要 |
FIELD: radio engineering. ^ SUBSTANCE: system of community reception of television signals with various modulation types includes MMDS digital antenna and analogue antennae of "£Æ" and decimetric wave bands, complete with matching device, receiving unit of television radio signals, trunk amplifier connected to trunk splitters which are connected through subscriber splitters to each subscriber of the system. As television radio signal receiving unit there applied is digital converter, as well as converter power injector and digital adder are introduced; at that, digital converter and power supply injector are connected by means of a connector, output of power supply injector is connected to input of digital adder, and the second input of digital adder is connected to analogue decimetric wave by means of output of antenna with the matching device, output of digital adder is connected to decimetric wave by means of input of trunk amplifier, additional input of which is connected to "£Æ" output of antenna matching device. ^ EFFECT: delivery to all subscribers of community receiving television network of all signals, which are provided at inputs of the system without deterioration of their reproduction quality. ^ 1 dwg |
