UTC 72181 interstage Transformer ID?

Posted on February 12, 2017 at 15:27:28

bcguitar
Audiophile

Posts: 1328
Location: Maryland
Joined: March 2, 2005

Found a nice looking interstage trans labled UTC 72181 with no other markings except the 6 tabs with P B G F F G. Anyone know what it is? Thanks, BC

Palustris

09:28:43 02/13/17

bcguitar

10:24:13 02/13/17

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Palustris

09:28:43 02/13/17

bcguitar

10:24:13 02/13/17

RE: UTC 72181 interstage Transformer ID?, posted on February 13, 2017 at 09:28:43
Palustris Audiophile Posts: 2408 Location: Cape Cod Joined: September 12, 2008	A long part number like that would indicate it is an OEM product. IOW it was created for a specific vendor intended as part of their product. The six tabs indicate a single plate to push pull grids. The "F" is for filament so probably a directly heated triode (2A3, 6B4, 6A5) driven by a 27 family triode (27, 37, 56, 76, 6P5, 6J5).

RE: UTC 72181 interstage Transformer ID?, posted on February 13, 2017 at 10:24:13
bcguitar Audiophile Posts: 1328 Location: Maryland Joined: March 2, 2005	Thanks, yes it is marked Navy.

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