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358 STATEMENT ON THEATER TELEVISION October
television service is to be established, it is necessary to have available communication or syndicating facilities to distribute programs locally, regionally, and on a nation-wide basis from a point of origin.
At the present state of knowledge of the art, the Society estimates that distribution channels 50 megacycles wide will be required to transmit high-definition monochrome or color television programs satisfactory for theater use.
It is quite possible that theater television will require up to 60 channels, at least in the larger metropolitan areas. This allocation plan would then provide six channels for each of ten possible programoriginating organizations.
In specifying that six channels would be required for each of the program-originating organizations, it is believed that each such organization would need two channels for program pickup (where necessary one of these channels will be employed as a studio-transmitter link and the other for remote pickup) ; two channels for distribution of programs to its theaters (which might well be divided into two groups requiring different programs or types of theater television at the same time) ; and at least two channels for intercity distribution! (in long-distance transmission several relay points are necessary, anc it usually is not practicable both to receive and transmit on the same carrier frequency from any single relay station) .
While six channels would provide highly satisfactory distribution, it is possible that the two channels used for distribution of programs to theaters within a single urban area could also be used for relaying programs between cities. Practical answers to this question, however, can only be arrived at after experience is gained through future commercial operation.
SERVICE CLASSIFICATIONS — The Society is not in a position t( estimate the number of types of program-originating organizations which should exist to provide a truly competitive nation-wide theateij television service. However, in order that the Commission may havd some idea of what would be expected with various types of operation several possible classes of service are outlined below. Service grades; and types, together with a table showing the bandwidths required for each type of operation, are included.
Grade 1 Service — Grade 1 program-originating organizations woulc! require six channels: Two for remote pickup; two for simultaneous transmission of two events or programs to different classes of local theaters; and two for intercity connection.