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4hv.org :: Forums :: General Science and Electronics
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Unknown tube

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Myke
Wed Aug 11 2010, 02:40AM Print
Myke Registered Member #540 Joined: Mon Feb 19 2007, 07:49PM
Location: MIT
Posts: 969
Hi. I don't know where to find this vacuum tube's datasheet if it is even a tube. It might be some water cooled tetrode or something.
Any info is appreciated.

1281494399 540 FT0 Img 5217

1281494399 540 FT0 Img 5218


I'll clean the tube before testing it.
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radiotech
Wed Aug 11 2010, 03:24PM
radiotech Registered Member #2463 Joined: Wed Nov 11 2009, 03:49AM
Location:
Posts: 1546
This might serve as a first step in analysing that tube:
1281540242 2463 FT94261 Scan0014
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HVgeek
Fri Aug 13 2010, 10:15AM
HVgeek Registered Member #2998 Joined: Tue Jul 13 2010, 08:34PM
Location: Swedish forests.
Posts: 26
Well, the first two connections are always for heater voltage. And from my experience most tubes are directly heated, so the second would also be the cathode. Then we have the two grids of a tetrode, and finally the water cooled anode. There's really not many more things those two connections can be.

That's definately a tube. Only I can't fathom the operating parameters without some sort of sheet. Size might give you a rough idea of voltage and wattage, but really, you need a sheet or get lucky and find someone who recognize it.
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Myke
Sun Dec 26 2010, 09:29AM
Myke Registered Member #540 Joined: Mon Feb 19 2007, 07:49PM
Location: MIT
Posts: 969
After a long time, I think I stumbled on it's air cooled equivalent or something similar (since I have never seen any other tube with such a construction) here:
Link2
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