NAEB Engineering Newsletter (Mar 1957)

Record Details:

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WSM-TV studio which is air conditioned). In ad¬ dition to cutting down heat, they also believe a re¬ duction in the amount of infra-red light improves picture quality. * * * * On our visit to ICCTS in Seattle, we picked up an idea which may be helpful. In order to cut down on their inventory of 16mm reels, they use a split reel in conjunction with a plastic core and a brass hub which they designed and built. This way they are able to store film in cans on the plastic core (used for bulk film) and operate with a small number of split reels. The illustrations show the parts of the brass hub separated and with the hub in the plastic core. KCTS is fortunate in being able to have the hubs made at a trade school at no other cost than the 1 inch brass stock. They also buy the inexpensive reels, take them apart and install the brass hubs, thus making a very reasonably priced split reel. We don’t have a working drawing for the hub, but believe you all have the. important dimensions available to have these made, if you wish to adopt this practice. * * * * We also picked up a tip from Ross Scroggs at WUNC-TV which has a more limited appeal since it is for use with a film processor. WUNC-TV has been making kinescope record¬ ings of* the University of North Carolina football games. They built a film magazine which holds an hour’s film so it is possible to reload the magazine in the 20 minutes between the halves of the game. The kine is then edited and shown on WUNC-TV on Sun¬ day evening. WUNC-TV does its own film processing. Ross has a special metal core he uses to make sure he does not pull the film leader through his film processor, and avoids the necessity for rethreading the processor. He uses a metal core as the take up hub in the kine¬ scope recorder magazine. Sufficient leader for the processor is attached at the start of each hour’s un¬ exposed film. The special core contains a slot just wide enough to accomodate the thickness of the film. In threading the magazine, the end of the leader is folded over so the leader won’t pull out of the core. \ I The film is processed backwards, that is, from end to beginning. When the exposed film has run through the processor and pulled the leader through to the end, the tension stops the processor, threaded with leader. * * * * We have just received the 25th Anniversary Issue of Broadcast News, a publication of the Radio Corp¬ oration of America. Among other articles it contains a 13 page, well-illustrated description of KETC, The St. Louis Educational Television Commission station. There is also a short story devoted to WHYY-TV of the Metropolitan Philadelphia Radio and Television Corporation. Page 2