Square tube shields - Printable Version

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Square tube shields - LASJayhawk - 09-23-2012

Is there a difference between the ones used in 37 (4 tabs or the base at the socket) and 39 (has the base that requires you to use a 'G' type tube?

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RE: Square tube shields - Ron Ramirez - 09-23-2012

No difference in the shields themselves, only in the shield bases.

1937 shield bases are the best if you need to change a base out, because they only have four flat "fingers" that hold the shield, allowing you to use any type of tube that will fit the socket - G, GT or metal. But 1936, 1938 and 1939 bases have an opening where only a "G" tube will fit. (This did not apply to 1936 models as only standard base tubes were used in the 1936 Philcos, not octals.)

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