3 United Transformer Company DOT-40 40K To 50K Interstage Center-Tapped Transformers NOS NIB Box Of Three Colors Of The Day This lot of three Sylvania-MANUFACTURED

This lot of three Sylvania-MANUFACTURED number 19 tubes was tested on our Paul Hart-calibrated TV7/U for shorts

Transconductance was 1620 for Tube One and 1730 for Tube Two where new/nominal is within one standard deviation of 1900

Transconductance measured 95%/100% for Tube One and 95%/105% for Tube Two

This Amperite 115NO10T relay tube tested to spec on our Hickok 800

The spine is in fine shape with no loose pages and the dust jacket has only a few

3 United Transformer Company DOT-40 40K To 50K Interstage Center-Tapped Transformers NOS NIB Box Of Three Colors Of The Day This lot of three Sylvania-MANUFACTUREDThis new old stock, new in box of 3 (three) DOT 40 40K To 50K center tapped interstage transformers is sold as is as I have no means of testing them. Please see the final picture to read about its full details. WE HAVE 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. 1. MOST FORMS OF