Zenith 100-79 Ballast Tube NOS NIB JANCHY12SN7GT These are 6N7 tubes

These are 6N7 tubes

new in box Dumont 3CA3 tube tested to spec on our Paul Hart-calibrated TV7/U

an old-fashioned balloon / globe bottle shape

Tube One measured 60 while Tube Two measured 62 where minimum (65%) is 55 and 100% 85

Zenith 100-79 Ballast Tube NOS NIB JANCHY12SN7GT These are 6N7 tubesThis new old stock, new in box Zenith 100 79 ballast tube and another just like it tested to spec on our Paul Hart calibrated TV7 U. Etsy will indicate the number available. 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