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Simple Question
Chuck Schwark
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#6

11-08-2010, 08:16 PM
From The Philco Serviceman, May, 1934, p.4

Red......................Filaments and odd wires

Brown...................Cathodes and grounds

White...................B+ and screens of output pentodes

White & Black..........Plates (Wht with blk tracer)

Black & White..........Plates (Blk with wht tracer)

Green....................Grids and screen-grids

This scheme was not strictly adhered to in many following years, it seems and not post-WWII.
Probably valid up through 1936-37 model years, at least.

No revised color codes found in any of the later Serviceman bulletins that I have.

Chuck
Chuck Schwark,
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Messages In This Thread
Simple Question - by 7estatdef - 11-04-2010, 04:34 PM
Re: Simple Question - by Ron Ramirez - 11-04-2010, 05:03 PM
Re: Simple Question - by 7estatdef - 11-07-2010, 10:22 PM
Re: Simple Question - by Ron Ramirez - 11-08-2010, 09:35 AM
Re: Simple Question - by codefox1 - 11-08-2010, 05:06 PM
Re: Simple Question - by Chuck Schwark - 11-08-2010, 08:16 PM
Re: Simple Question - by Ron Ramirez - 11-08-2010, 08:22 PM
Re: Simple Question - by Chuck Schwark - 11-08-2010, 08:24 PM
Re: Simple Question - by exray - 11-08-2010, 09:36 PM
Re: Simple Question - by codefox1 - 11-08-2010, 10:35 PM
Re: Simple Question - by 7estatdef - 11-09-2010, 07:10 AM



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  1. The PHILCO Phorum
  2. Philco Radio Discussions
  3. Philco Electronic Restoration