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 Post subject: Please Help ID Tube Type and Manufacturer
PostPosted: Aug Sun 11, 2019 1:11 am 
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Joined: Jan Thu 01, 1970 1:00 am
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Location: Eschew Obfuscation Virginia 23005
I am trying to ID the tube type and manufacturer of a Pingree tube. It doesn't appear to be a tube inserted into a tube adapter, although it could be and is just very tightly situated. There are no discernible markings on it save for some logo on the bottom of the base.

Any ideas?

TIA,

Terry


Last edited by radioterry on Aug Thu 15, 2019 3:18 pm, edited 1 time in total.

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 Post subject: Re: Please Help ID Tube Type and Manufacturer (Pictured)
PostPosted: Aug Sun 11, 2019 6:50 am 
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Only two real choices for the tube type. It is either a WD-12 or a 199 on an adaptor base. I lean towards 199, as many independents made them.


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 Post subject: Re: Please Help ID Tube Type and Manufacturer (Pictured)
PostPosted: Aug Mon 12, 2019 1:41 am 
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A similar tube, not blue, was discussed in the Online Auctions forum last week or so. Something about it looking gassy. I assumed it was a battery tube in an adapter, someone corrected me and said they made tubes like that with adapter style bases part of the tube.
viewtopic.php?f=11&t=362807

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 Post subject: Re: Please Help ID Tube Type and Manufacturer (Pictured)
PostPosted: Aug Mon 12, 2019 2:54 am 
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Thanks!

That base information in the thread you posted aligns with my observations of this tube. Also, I found some information on the Internet about a short-lived tube manufacturer: "Pingree"!


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