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Original file (SVG file, nominally 400 × 833 pixels, file size: 13 KB) This is a file from the Wikimedia Commons . Information from its description page there is shown below.
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This file contains additional information, probably added from the digital camera or scanner used to create or digitize it. If the file has been modified from its original state, some details may not fully reflect the modified file.
The Indian Head pattern as mentioned in Ziff Davis's Radio & Television News trade magazine in January 1949. Indian Head pattern with its elements labeled, describing the use of each element in aligning a black and white analog TV receiver. The Indian-head test pattern was created by RCA at their factory in Harrison, New Jersey. Each element of ...
Size of this PNG preview of this SVG file: ... 5×5 black and white checkered pattern: Date: 11 March 2007: ... The following 2 pages use this file: Check (pattern)