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- 6 - TV TECHNICAL TIPS NO. 1 by Cecil S. Bidlack, NAEB TV Engineer Why do images ”stick" on image orthicon tubes? Can proper operation of the orth minimize this sticking? ’ These two questions are answered in a paper presented at the Eighth NARTB Broadcast Engineering Conference in Chicago May 27, 195U by R. G. Neuhauser, camera tube engineer for the RCA Tube Division, Lancaster, Pa. When you pay 01200.00 for a 5>820 image orthicon there are two things you as a TV engineer are interested in getting from It. The first is a high quality picture and the second is a long life which is easily translated into low operating cost. Neuhauser states that operating conditions which giVe the best picture are the same as those that give the tube longest life in normal operation. RCA has printed this talk in Publication No. ST-§93 and it should be MUST reading for every video control engineer. The title of the paper is ’’Optimum Perform¬ ance of Image Orthicons and Vidicons in Broadcast Service.” If you would like to have a copy of this paper, drop a note to the NAEB Television Engineer and he will secure a copy for you. ■x- * -Jf -if -if # * *-# -if Linn Towsley, Chief Engineer for WKAR-TV, is installing a new studio switching system and a master B plus power supply system manufactured by General Communi¬ cations of Fort Atkinson, Wisconsin. Other stations may be interested in con¬ sidering a master .power supply for regulated B Plus .voltage, rather than using individual power supplies as is done in much current practice. The master sup¬ plies are available in 2, 10, and $0 ampere capacities at 360 volts with which individual voltage regulators are used. Advantages claimed are the elimination of large numbers of individual heat producing supplies, conservation of rack space, low maintenance and operating cost, and low initial cost. -)f -X- -Jf •if -x- * if if if if if By the time this Newsletter reaches you this item will not be timely. . However, it illustrates a point. RCA is advertising a ’’Sale” of certain items of tele¬ vision equipment and if you happened to be in the market for the items mentioned substantial savings could be had. For instance, a TG-10A Sync Generator.(field type) with a regular price of '">3750.00 was offered at $2000,00j a TS-30B/Field Switcher at $1339.00 marked down from "2200.00. If we had a well .polished crys¬ tal ball and knqw what you needed;we could pass such information on to you and you might take advantage of such offerings. Perhaps you have surplus equipment, sounds crazy doesn*t it, that some other educational station could use. If so you would be able to realize something from it and the station needing it would be willing to pay a fair price and both would benefit. Recently we had a request from Graydon Ausmus of the University of Alabama, Sta¬ tion WUOA, for a side mount 6 or .8 bay FM antenna (Collins or Andrews), Possi¬ bly you have one he could use. A local phone call to John Brugger of WILL dis¬ closed that they have a Federal 8 Bay antenna fdr 93.3 me that they were willing to dispose of at a very reasonable price. Obviously we couldrMt call all NAEB