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Faded valve identification numbers: Some tech tips for reading them
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Return to top of page · Post #: 1 · Written at 1:57:00 PM on 1 October 2020.
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Location: Sydney, NSW
Member since 28 January 2011 Member #: 823 Postcount: 6761 |
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Return to top of page · Post #: 2 · Written at 12:18:04 PM on 2 October 2020.
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Administrator
Location: Naremburn, NSW
Member since 15 November 2005 Member #: 1 Postcount: 7395 |
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I'd never heard of a blacklight being used before but it looks like it works. I've usually resorted to breathing on a valve to make the stamp readable, though that doesn't work in the summer months and relies on not all of the original 'ink' being rubbed off the glass. ‾‾‾‾‾‾‾‾‾‾‾‾‾‾‾‾‾‾‾‾‾‾‾‾‾‾‾‾‾‾‾‾‾‾‾‾‾‾‾‾‾‾‾‾‾‾‾‾‾‾‾‾‾‾‾‾‾‾‾‾‾‾‾‾‾‾‾‾ A valve a day keeps the transistor away... |
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Return to top of page · Post #: 3 · Written at 11:54:27 AM on 9 October 2020.
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Location: Bathurst, NSW
Member since 7 August 2008 Member #: 336 Postcount: 397 |
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Handy tip, must get a black light. |
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Return to top of page · Post #: 4 · Written at 12:20:01 PM on 9 October 2020.
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Location: Hobart, TAS
Member since 31 July 2016 Member #: 1959 Postcount: 563 |
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I’ve ordered one, hopefully to make sense out of an A4 box full of unknown valves. |
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Return to top of page · Post #: 5 · Written at 3:56:59 PM on 9 October 2020.
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Location: Hill Top, NSW
Member since 18 September 2015 Member #: 1801 Postcount: 2078 |
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Looks like an interesting concept. I had a number of unknown valves, but was able to work them all out by what they looked like, or by checking the internal connections. |
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Return to top of page · Post #: 6 · Written at 11:33:08 PM on 9 October 2020.
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Location: Wangaratta, VIC
Member since 21 February 2009 Member #: 438 Postcount: 5389 |
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I did put that into an article in the Radio Club mag last month. No feedback yet. |
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Return to top of page · Post #: 7 · Written at 9:24:14 AM on 10 October 2020.
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Location: Latham, ACT
Member since 21 February 2015 Member #: 1705 Postcount: 2174 |
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I have actually downloaded the phone app for this and will let you know how it goes. |
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