Trigon UCH81 19D8 Vacuum Tube NOS NIB September 13 2022

Trigon UCH81 19D8 Vacuum Tube NOS NIB September 13 2022This new old stock, new in box Trigon UCH81 tube tested to spec on our Paul Hart calibrated TV7 U. WE HAVE SCORES OF THOUSANDS OF VACUUM TUBES. 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 SHIPPING EXCEPT MEDIA MAIL ARE AUTOMATICALLY INSURED UP TO $100. ETSY PURCHASE PROTECTION COVERS ITEMS UP TO $250

34 and 35 where minimum (65%) is 25

This lot of two GE industrial-grade 1852 (6AC7) tubes was tested on our Paul Hart-calibrated TV7/U for shorts

but I do not recommend using them at any other filament voltage than 12

top to bottom) 39

terrific flashing and GJ MVWV date codes

This is a testament to their high emissions

58 and 67 where minimum (65%) is 48

This new old stock-testing RCA clear top 6CG7 / 6FQ7 dual triode was tested on our Paul Hart-calibrated TV7/U for shorts

beefy black plates: side O getters

This lot of three US-made type 42 tubes was tested our Paul Hart-calibrated TV7/U for shorts

3 milliamps' plate current while Tube Two drew 23

The spine is in fine shape with no loose pages