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CoRadio schematic
2/21/2010 2:37:24 PMTasha
Does anyone have a link to a schematic for a CoRadio (or similar)motel radio circa 1940's using 35y4, 35a5, 14b6, 14a7, 14qy and 14a7 tubes. I am looking in particular for the value of the series resistor that kept the tube heaters on stand-by and the value of the dual main filer cap (guessing 50 to 10 mfds at 150 to 200 volts?)

Thx Tasha

2/23/2010 3:35:08 PMSteve - W9DX
I think the Stromberg-Carlson 1000H had the same tube line-up. See: http://www.nostalgiaair.org/PagesByModel/268/M0021268.pdf

Looks like that one used 40 mfd filter caps. Also check http://www.grillecloth.com/sylvania/tubelist.php for other models with the same line-up.

2/25/2010 10:56:56 AMtasha
:I think the Stromberg-Carlson 1000H had the same tube line-up. See: http://www.nostalgiaair.org/PagesByModel/268/M0021268.pdf
:
:Looks like that one used 40 mfd filter caps. Also check http://www.grillecloth.com/sylvania/tubelist.php for other models with the same line-up.
:
2/25/2010 10:57:50 AMtasha
THX!! That's it!!
Tasha
:I think the Stromberg-Carlson 1000H had the same tube line-up. See: http://www.nostalgiaair.org/PagesByModel/268/M0021268.pdf
:
:Looks like that one used 40 mfd filter caps. Also check http://www.grillecloth.com/sylvania/tubelist.php for other models with the same line-up.
:


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