UTC’s “CG” ‘commercial grade’ line of transformers were high-quality sealed units made in the 50s and 60s and possibly later. The later ‘red paint’ iterations often have pinout data printed on the cases, but the earlier ‘metal-badge’ versions sometimes do not. Despite the wealth of vintage UTC transformer data already available online, I could not find this particular document on the internet so I have scanned it for y’all. This particular document has a March 1956 date code so i assume that it covers the line at-that-point.
CNTRL-CLICK TO DOWNLOAD 4PP PDF:
Units covered include output transformers CG-2L6, 4L6, 15, 16, 19, 710; power transformers CG-422, 428, 429, 431; bias units CG-315, 316; low-level audio units CG-131, 132, 133, 134, 135, 136, 1347, 140, 141, 233, 235, 333, 433; and power transformers CG33, CG120, CG122, CH124, CG125, CG126, CG300, CG301, CG302, CG303, CG34.
Starting this month I am scaling back the monthly WPKN FM radio show to one…
Im back from 2 weeks in Japan, time that I primarily spent hunting for records.…
Available now on LoveAllDay Records : the new LP "Secular Music Group Volume 1"- avail on vinyl…
This month's Preservation Sound Radio program will air tonight Tuesday May 21 at 8:30 PM.…
This month on Preservation Sound Radio: nine side-filling tracks from 1970 thru 1986, all from…
This month's show airs Tuesday 2.20.24 at 8:30PM -11:25PM EST on WPKN 89.5 FM in…
View Comments
I visit your site often because of all the 'goodies'. Thank you for that.
The link in this article is not working.
Greetings,
Robert
Hello Robert. you are welcome. Regarding the link: i just tried the link and it works as indicated. As I state, control-click on the image in order to download the PDF. I just tried it literally 30 seconds ago and it works fine. CR
Hello,
Thank you for your great site. Lots of interesting items here.
For the UTC terminal arrangement I also tried the ctrl+click instruction, both on an Windows machine and one using Ubuntu. Unfortunately it did not work for me, either.
After some detective work, I found this link:
https://www.preservationsound.com/wp-content/uploads/2020/05/UTC-CG-DATA-1957.pdf
Hopefully this link will work for anyone else who is having trouble.
Best Regards,
William
Hi william. yea i only have a mac, and the site works fine on macs, but i can;t say RE: PCs. This site is built on wordpress, which is not well-supported any longer. I would probably have to pay 1000s to a developer to fix it at this point.