This report describes outline of Report on Technical Requirements, which was proposed by the Telecommunications Technology Council in 26 Nov'90,of television transmission systems for broadcasting service, via communication satellites, using the frequency of 12.5-12.75GHz. This Report takes an important role in making revison of laws and ordinances concerning technical standards.
Satellite television broadcasting by means of communication satellite at Ku band will be realized shortly. This paper deals with the transmission characteristics of communication satellite channel in comparison with those of the broadcasting satellite at 12GHz, as well as the guide lines for receiving antenna characteristics.
Informations about a local area is hoped to be broadcasted only to the area. So, it is important for every rebroadoasting station to superimpose separately. This is an experiment of superimpose for rebroadcasting stations. The freature of this experiment is the deveropment of equipment which can superimpose by I F moduration, and another freature is the deveropment of teletext receiver only for rebroadcasting stations which can use teletext system. This paper reports these equipments and indoor experiment about these equipments.