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Type 41 Tube - Philco
mikethedruid
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City: Sneedville, TN
#3

01-31-2020, 05:01 PM
The ST refers to the glass envelope. It means a tubular envelope. It will be a constant diameter all the way from the base up, rather than bulging like a regular 41G. It is a direct replacement despite looking different because of the envelope.
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Messages In This Thread
Type 41 Tube - Philco - by rd48sec - 01-31-2020, 03:32 PM
RE: Type 41 Tube - Philco - by Radioroslyn - 01-31-2020, 03:48 PM
RE: Type 41 Tube - Philco - by mikethedruid - 01-31-2020, 05:01 PM
RE: Type 41 Tube - Philco - by sdradioman - 01-31-2020, 05:43 PM
RE: Type 41 Tube - Philco - by madsowry - 02-01-2020, 12:16 AM
RE: Type 41 Tube - Philco - by mikethedruid - 02-01-2020, 12:52 AM
RE: Type 41 Tube - Philco - by captainclock1988 - 02-11-2020, 02:13 AM
RE: Type 41 Tube - Philco - by mikethedruid - 02-11-2020, 04:22 AM



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  1. The PHILCO Phorum
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  3. Philco Electronic Restoration