Tube ID Help
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| Posted on January 7, 2021 at 16:02:13 | ||
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Posts: 709
Location: Front Range Joined: December 23, 2007 |
 I know this is a VR tube but not sure which Ox3-A,B,C,D it seems like a later RCA tube with the typeface it has no markings except under the RCA which is 7509, nothing on the glass I have googled TIA
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| RE: Tube ID Help, posted on January 8, 2021 at 22:24:47 | |
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Posts: 10048
Location: Central Texas Joined: September 24, 2006 |
I don't think there's any way to know without firing up the tube.
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