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#1
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What is the blue stuff on top of these tubes?
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#2
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ren
It's external. Some kind of paint to mark /identify /tart them for some reason. "ren" wrote in message ... http://cgi.ebay.com/ws/eBayISAPI.dll...3125 857&rd=1 |
#3
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Jim Gregory wrote:
ren It's external. Some kind of paint to mark /identify /tart them for some reason. "ren" wrote in message ... http://cgi.ebay.com/ws/eBayISAPI.dll...3125 857&rd=1 Right, thank you. I see that now that you pointed it out. It was so odd looking I couldn't figure what would cause that. |
#4
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ren wrote: Jim Gregory wrote: ren It's external. Some kind of paint to mark /identify /tart them for some reason. "ren" wrote in message ... http://cgi.ebay.com/ws/eBayISAPI.dll...3125 857&rd=1 Right, thank you. I see that now that you pointed it out. It was so odd looking I couldn't figure what would cause that. Maybe it is temperature sensitive paint which changes colour if the tube has been over heated. Could have been from a Blues Bros amp. Patrick Turner. |
#5
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It's not widely known, but some cultures decorate vacuum tubes
as Christmas ornamnets... likely just ROS (recovered old stock). ) |
#6
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#7
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Perhaps they were matched or rated and colour-coded by a reseller or
a bulk user? That would explain why they are so similar. Cheers, Ian |
#8
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You're exactly right, Ian.
This type of paint is very common with tubes used by the Hammond organ company. Just a way of identifying them. Easier to apply and see in a production environment. "Ian Iveson" wrote in message k... Perhaps they were matched or rated and colour-coded by a reseller or a bulk user? That would explain why they are so similar. Cheers, Ian |
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