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Question on "mica" caps in Philco 40-155
KI4WCQ
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Posts: 5
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Joined: Oct 2017
City: Elizabethtown, KY
#5

03-26-2021, 12:13 PM
Everything looks untouched in the radio, but the makers of the mica caps vary as Corneill-Dublier, Aerovax, and Micamold versions are present.  There are also two that have no manufacturer ID on the side with the color code and I can't see the back of those to see if they are marked.

The color codes don't align with the schematic.  For example, what should be a 5mmfd has a code of Yel-Grn-Yel, a 110 mmfd has colors of Or-Yel-Or, and a 1250mmfd is Grn-Or-Grn.  Only one of the mica color codes agree with the schematic...that one of a 5300 mmfd with Grn-Or-Red.

The large value "micas" (1250 and 5300 mmfd) are both Cornell-Dublier.
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RE: Question on "mica" caps in Philco 40-155 - by KI4WCQ - 03-26-2021, 12:13 PM



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