United DOT-39 20K To 30K Interstage Center-Tapped Transformer NOS NIB RCA NOS-Testing

United DOT-39 20K To 30K Interstage Center-Tapped Transformer NOS NIB RCA NOS-TestingThis new old stock, new in box DOT 39 20K To 30K center tapped interstage transformer is sold as is as I have no means of testing this output transformer. Please see the final picture to read about its full details. WE HAVE SCORES OF THOUSANDS OF VINTAGE ELECTRONIC ITEMS. IF IT'S NOT LISTED, WE MAY HAVE IT. PLEASE ALSO SEE OUT ETSY SISTER SITE "LOWTECHTWOO" AND OR CALL OR TEXT US AT 202 372 6931 IF YOU DO NOT SEE WHAT YOU NEED OR HAVE ANY QUESTIONS.

I just cleaned this album on my VPI 16

Tube One measured 55 while Tube Two measured 60

new in box GE 12L6GT tubes tested to spec on our Paul Hart-calibrated TV7/U

Tube One measured 42 while Tube Two measured 45 where minimum (65%) is 46 and 100% is 71

These nine tubes were tested on our Paul Hart-calibrated TV7 for shorts

66 and 68 where minimum (65%) is 45

Transconductance measured 56/56 for Tube One and 58/58 for Tube Two where minimum (65%) is 25/25 and 100% is 38

It measured 78/80 where minimum (65%) is 50/50 and 100% is 77/77

These four milspec RCA small logo 12SG7 / VT-209 tubes were tested on our Paul Hart-calibrated TV7/U for shorts

This milspec (US Navy) Ken-Rad CKR-78 / type 78 tube tested to spec on our Paul Hart-calibrated TV7/U

new in box milspec black plate GE JAN-6Y6GT / JAN-CG-6Y6GT tubes tested to spec on our Paul Hart-calibrated TV7/U

new in box Cunningham 14F7 tube tested to spec on our Paul Hart-calibrated TV7/U