Sylvania 5BC3 Vacuum Tube Valve NOS NIB LowtechTwoo 7K Magnavox-LABELLED 6CW5 tube tested to

Magnavox-LABELLED 6CW5 tube tested to spec on our Paul Hart-calibrated TV7/U

Transconductance measured 57 for Tube One and 58 for Tube Two where minimum (65%) is 58 and 100% is 89

They tested (from left to right

It measured a nearly-perfectly-balanced 84/82 where minimum (65%) is 50/50 and 100% is 77/77

Sylvania 5BC3 Vacuum Tube Valve NOS NIB LowtechTwoo 7K Magnavox-LABELLED 6CW5 tube tested toThis new old stock, new in box Sylvania 5BC3 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 OF THE TUBES WE SELL ARE OVER 70 YEARS OLD. WE CANNOT GUARANTEE FOR FAILURES AFTER POWER UP AS THERE IS NO WAY TO DETERMINE