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 Post subject: Old Tube identification
PostPosted: Sep Tue 14, 2021 5:38 pm 
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Joined: Aug Mon 31, 2020 9:21 pm
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Location: 3717 NW 66th pl gainesville FL 32653
i got this old tube to add to my collection and want to know what it is it has no markings on it at all except H13 on the inside it looks to be early 20s
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 Post subject: Re: Old Tube identification
PostPosted: Sep Wed 15, 2021 1:13 am 
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Joined: Jun Thu 12, 2008 1:05 am
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Location: Detroit, michigan
looks like a uv201


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 Post subject: Re: Old Tube identification
PostPosted: Sep Wed 15, 2021 1:25 am 
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Joined: Jun Wed 08, 2011 2:33 am
Posts: 12190
Location: Ohio 45177
Something like this? I notice that most production brass base GE tubes like 200 201 have the groove around the bottom end. http://www.bill01a.com/tubephotos/ge-uv201shaw.htm

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Last edited by wazz on Sep Wed 15, 2021 1:27 am, edited 1 time in total.

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 Post subject: Re: Old Tube identification
PostPosted: Sep Wed 15, 2021 1:27 am 
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Joined: Jun Wed 08, 2011 2:33 am
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Location: Ohio 45177
Or this? http://www.bill01a.com/tubephotos/ge-vt16late.htm Probably difficult to tell without marks.

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 Post subject: Re: Old Tube identification
PostPosted: Sep Thu 16, 2021 3:49 am 
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Location: 08033 Cherry Hill Jersey
This looks like the CG-1162, not equivalent to 00 or 01a. I had a bunch of these, and it was hard to peddle them because I think they were made for only WWI military applications - an early submarine radio...

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 Post subject: Re: Old Tube identification
PostPosted: Sep Thu 16, 2021 3:25 pm 
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Joined: Jan Thu 01, 1970 1:00 am
Posts: 1478
Location: Orlando, FL, USA
Not a CG1162/VT14. This tube has a flat plate. The CG1162/VT14 has a cylindrical plate.

I can positively ID this as an early UV201 made by GE.

While the first (and somewhat later) production UV201 tubes by GE have ceramic inserts in the bottom of the bases, GE recycled a bunch of VT-11 tubes and reused their bases on some UV201 and UV202 tubes. The "tell" is the ring in the material around one of the pins on the bottom of the base and the rectangular indent going towards the base shell. On a VT11, that pin was electrically connected to the base shell, but the connector has been removed here for the re-use of the base. And, of course, this is not a UV202, which has a bigger bulb.

I suppose it is possible for them to have done this with UV200 tubes too, but I have never seen one.

Jim Cross


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 Post subject: Re: Old Tube identification
PostPosted: Sep Thu 16, 2021 8:03 pm 
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Joined: Aug Mon 31, 2020 9:21 pm
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Location: 3717 NW 66th pl gainesville FL 32653
how much of an issue is the hole in the plate, did this tube fail catastrophically, or is it worn out? I have not tried to heat it up yet


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 Post subject: Re: Old Tube identification
PostPosted: Sep Thu 16, 2021 10:59 pm 
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Joined: Jan Thu 01, 1970 1:00 am
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Location: Orlando, FL, USA
Catastrophic short circuit


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 Post subject: Re: Old Tube identification
PostPosted: Sep Thu 16, 2021 11:23 pm 
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Joined: Aug Mon 31, 2020 9:21 pm
Posts: 212
Location: 3717 NW 66th pl gainesville FL 32653
can this happen even with no physical connection?


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 Post subject: Re: Old Tube identification
PostPosted: Sep Fri 17, 2021 12:02 am 
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Joined: Jan Thu 01, 1970 1:00 am
Posts: 1478
Location: Orlando, FL, USA
There was an arc between something and the plate.

Arcs can happen with no physical connection.... That's how spark plugs work.


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 Post subject: Re: Old Tube identification
PostPosted: Sep Fri 17, 2021 1:45 am 
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Joined: Aug Mon 31, 2020 9:21 pm
Posts: 212
Location: 3717 NW 66th pl gainesville FL 32653
ok thanks, i just wanted it for my display anyway


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 Post subject: Re: Old Tube identification
PostPosted: Sep Fri 17, 2021 6:16 pm 
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Joined: Mar Wed 16, 2011 10:44 pm
Posts: 2032
Location: Peekskill, NY
Wondering: is the filament continuous?


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