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1952 Theatre Catalog, 10th Edition, Page 401 (363)

1952 Theatre Catalog, 10th Edition
1952 Theatre Catalog
1952 Theatre Catalog, 10th Edition, Page 401
Page 401

1952 Theatre Catalog, 10th Edition, Page 401

of equipment while awaiting the conVenience and availability of telephone equipment.

On the subject of connections and local telephone companies, it has been determined that the telephone company will make an initial charge for running a connection from the nearest coaxial cable lines to the theatre, which charge will vary according to the length of the connecting line. It is probable that the company will charge the theatre a monthly rate whether on not the service is utilized.

For instance, the Ashland, Kansas City, is reported to have paid $1250 for the connection from the coaxial cable to the theatre and monthly maintenance or standby service fees run to about $415 per month. The line charge from Champaign, Ill. to Kansas City was one dollar per mile for the 418 miles between the point of telecast and the theatre when a football game was picked up at that point. t

Coaxial cable connections in the New York City area have tentatively been figured on a different basis. There the installation cost was to be in the proposed neighborhood of $35 and the theatre owner installing a theatre TV system would have to guarantee the telephone company from $650 to $865 per month, depending upon the location of the theatre with respect to the route of the coaxial cable, and whether the service was actually used. In addition, there would also be a line charge from the point of emanation of the program to the theatre. This situation would be modified somewhat were more microwave facilities available in the area at which time the theatre would then only have to pay for the service actually used. This service, plus the air line mileage rates, would total considerably less than if it involved a connection to a coaxial cable. It probably should also be noted that when more programs are available and closed-circuit telecasts are made on a basis of once a week, the actual cost of telephone service per showing will be less than it is now when service is actually used on few occasions.

Non-Theatrical Use

The Trad system, primarily designed for theatre use, does not include sufficient amplification to operate a loudspeaker system, as it will normally operate with the regular theatre sound system. Standard equipment provides for proper impedance matching between the "off the air" receiver or the closed circuit to a sound system having either a high or low impedance input.

This does not mean, however, that the non-theatrical or narrow gauge situation cannot have large-screen television. It merely means that these installations will also require an amplifier and loudspeaker system and, for typical installation having less than 1,000 seats, Trad recommends the use of an Altec A3324A amplifier, an Altec 800 speaker system and accessories such as a cable connector (Amphcnol 75-MC1F) and 25 feet of single conductor microphone cable (Holden 8401) for connecting the amplifier to the receiver or closed circuit line.

Results indicate that a beaded screen,


perforated if possible, is to be preferred with the speaker mounted in the conventional manner. If the perforated screen cannot be obtained, the speaker can be used at one side of the screen. Additionally, if there is a problem of space limitations, it is recommended that two Altec 603B speakers mounted in Altec 612 cabinets be used. One at each side of the screen will provide adequate

distribution and good sound quality and sufiicient two-conductor cable should be provided for the speaker circuit from the control point to the speaker. Also, a proper antenna will have to be set up for ttoff the air" reception and selection of this item should depend on recommendations of engineers supervising the particular installation, as reception requirements will vary as to location.

IN THE PROJECTION BOOTH only the small control panel and combination tuner and monitor (above)

are added to the regular booth equipment. and the theatre's own sound system is used. All controls are automatic and no specml skills are needed. In service tor one year. audience reaction has been good.
1952 Theatre Catalog, 10th Edition, Page 401