Unknown tube, Arcturus ?
Unknown tube, Arcturus ?
Hello tube collectors,
I have a questions to a tube, I assume it is a Arcturus. The tube is printed with a "S" on the socket and the glass ic coloured blue. Does any one know this tube or has some facts or data ?
Please take a look to the photos.
With greetings
Gerd Junginger
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it looks like a Arcturus 37A. The mostly unclear stamp is on a odd place. It is on the side in the upper part of the bulb.
Best regards, H.-T. Schmidt
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Dear Mr.Schmidt,
thanks for your answer. I made a test on my tubetester and the tube was tested fine as a 37A / 137A. The only thing which is confusing, is the printing "S".
Kind Regards
Gerd Junginger
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Arcturus had a trade mark "Sonora". It is possible, that the S means it.
Best regards, H.-T. Schmidt
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Hello Mr.Schmidt,
thanks for your answer. "Sonora" may be possible.
Best Regards
Gerd
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