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- Early B&W and Projection TV (http://www.videokarma.org/forumdisplay.php?f=19)

- - 7cp4 (http://www.videokarma.org/showthread.php?t=246690)

Eric H

12-13-2009 03:56 PM

7cp4

I'm not sure what this was used for.
Someone suggested it might be used to sub the 7DP4 in a 621TS but the shape is all wrong.

http://cgi.ebay.com/RCA-7CP4-CRT-use...item27adb834da

jr_tech

12-13-2009 04:05 PM

WWII Military TV, The 7CP1 and 7CP4 were introduced in 1943. Equipment like this:

http://www.qsl.net/w2vtm/mil_television_history.html

I have read that the P-1 green was preferred in this application as it offered better contrast.:scratch2:

jr

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