WTB UTC ouncer O and H (RC-25) transformers

Help Support GroupDIY:

ach

Member
Joined
Jan 18, 2021
Messages
5
Updated July 21 2021 - still looking!

I am looking for any of the following UTC transformers, or their relative equivalent military variety (or from later trademarks OPT, TRW, etc.):

They would look similar to these:

UTC-O-26.pngUTC-H-10.png

ModelPrimarySecondary
O-415k60k
O-515k60k
O-615k95k
O-715k95k
O-1510k1M
O-17Shield
O-1810k/2.5k2k/500
O-1910k/2.5k4k/1k
O-25600/1502k/500
O-2610k10k
O-2710k500/125
O-374k/1k600/150
H-315k60k
H-415k60k
H-515k95k
H-615k95k
H-1010k1M
H-1310k/2.5k2k/500
H-1410k/2.5k4k/1k
H-151.5k500
H-17600/1502k/500
H-1810k500/125

Thank you!
 
Last edited:

ach

Member
Joined
Jan 18, 2021
Messages
5
That's quite a variety of values! What are you building?
Hah, yes - some are being used as input or output, mostly for instrument level signal amplifiers with relatively forgiving impedances. The circuits are mostly one-offs and quite forgiving to impedance and transformer characteristics allowing a large variability. The enclosure sizes are small, hence the ouncer and size restriction. Thanks for looking, and appreciate any leads to find these!
 

mjrippe

Well-known member
Joined
Dec 27, 2011
Messages
2,514
Location
Brooklyn, NY
Hah, yes - some are being used as input or output, mostly for instrument level signal amplifiers with relatively forgiving impedances. The circuits are mostly one-offs and quite forgiving to impedance and transformer characteristics allowing a large variability. The enclosure sizes are small, hence the ouncer and size restriction. Thanks for looking, and appreciate any leads to find these!
I have a couple, and some other recommendations. Sending you a PM.
 

ach

Member
Joined
Jan 18, 2021
Messages
5
Much appreciated @mjrippe - thanks for the additional makes and models to look out for. Still on the hunt for more from this list. Thanks again.
 

dmp

Well-known member
Joined
Oct 28, 2009
Messages
3,043
Location
Madison, WI
I have these that I don't need:
O-8
O-11
O-14
O-25
Send a pm if you are interested
 

ach

Member
Joined
Jan 18, 2021
Messages
5
Thanks kindly @dmp - unfortunately I may not have enough forum clout to send you a DM. I would certainly be interested in the UTC O-25. P.S. Your website and work is quite inspiring!
 

mjrippe

Well-known member
Joined
Dec 27, 2011
Messages
2,514
Location
Brooklyn, NY
Thanks kindly @dmp - unfortunately I may not have enough forum clout to send you a DM. I would certainly be interested in the UTC O-25. P.S. Your website and work is quite inspiring!
Hold your cursor over the member's avatar (little picture) and a window will appear. Select "Start conversation" to send a DM.
 

dmp

Well-known member
Joined
Oct 28, 2009
Messages
3,043
Location
Madison, WI
Actually it was my fault - I was experimenting with the privacy settings a week ago and forgot to change them back. My "Start conversation" should be open to members now
 

ach

Member
Joined
Jan 18, 2021
Messages
5
Thank you @dmp - the UTC O-25 arrived. Much appreciated.

I am still actively looking for any of these transformers if others have them to sell. Thanks again!
 

Latest posts

Top