NAEB Engineering Newsletter (Aug 1955)

- 3 - Another development shown for the first time at the NARTB Exhibits was the RCA color effects equipment. By the use of a standard black and white vidicon camera, a color- plexer and other accessory equipment it is possible to originate color commercials, program titles,' and station identification color effects from black and white slides and art work. The black and white video signal is fed into the colorplexer and by the use of a simple output switching system many varied color effects may be pro¬ duced. The effects produced were in two colors such as red on blue, green on red or many other two color combinations as selected by the operator. Such a system could be used for color station identification breaks or commercials adjacent to color programs without a full complement of color equipment. The equipment used for producing these color effects would be required at a later date for color film reproduction or for live color originations. In addition, RCA was displaying a new type live color TV camera chain, as well as a new Universal Multiplexer for color TV broadcasting which permits multiplexing both single-V monochrome and 3-V color film camera chains so that the same projectors can be used for both color and monochrome film projection. Many manufacturers displayed color equipment. General Electric had its field se¬ quential system in operation which in conjunction with its chrcmacoder produced NTSC color signals. GPL was displaying a new 3-Vidicon color film camera. Dage display¬ ed a 3-Vidicon live industrial color camera about one-half the size of a black and white image orthicon camera. They were also showing a convertible monochrome to color vidicon film camera. % the use of one vidicon, monochrome film could be reproduced* By the addition of two more vidicons and necessary accessory equipment the same film camera could be converted to color. Dage also had on display its com¬ plete low power TV package, illustrating the possibility of equipping a TV station for less than si>52,000. GPL had in operation monochrome live cameras - one of them remotely controlled as well as a 3-V color chain for film and slide. Philco exhibit¬ ed two complete operating 16 mm and 35 mm film systems, as well as a newly developed crossbar switching system for local and remote video switching and a new dual light source for its color scanner. While much color equipment was in evidence such equipment items as new M ampliphase H 50 kw All transmitter was on display by RCA to be available later this year. Sarkes Tarzian was showing a new line of vidicon monochrome equipment and new film pro¬ jector and slide projection equipment. Kay Labs were also showing vidicon monochrome equipment with one camera equipped with a Zoomar lens. General Communications had a complete line of studio video and audio control equipment. Adler Labs displayed their low power TV transmitting equipment as well as satellite and booster equip¬ ment. Raytheon had a new high pov/er color telev: sion relay system on display as well as a microwave audio channel. The latter makes it possible to transmit high fidelity audio over existing video relay links. They were also showing microwave relay equipment designed especially for the transmission of field sequential CBS color from mobile or fixed locations. There were displays of lighting equipment as well as color test equipment. Gates and RCA were both showing new 3-speed broadcast quality turntables. Gates was featuring its new Hi-Watter line of AM broadcast transmitters as well as audio control equip¬ ment. Obviously it is impossible to mention all those who were displaying equipment at the 1955 NARTB Convention* We have mentioned but a few to give an idea of its