United DOT-39 20K To 30K Interstage Center-Tapped Transformer NOS NIB RCA NOS-Testing Tube One measured 55 while

Tube One measured 55 while Tube Two measured 60

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

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

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

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

United DOT-39 20K To 30K Interstage Center-Tapped Transformer NOS NIB RCA NOS-Testing Tube One measured 55 whileThis 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.