Matched Pair National Union NU 6F6GT JANCNU6F6GT Milspec Vacuum Tubes Valves Duodecar T26 I have played them in

I have played them in my Radio Craftsmen RC-2 monoblocks (with adapters

This lot of six US-made 6W6GT tubes was tested on our Paul Hart-calibrated TV7/U for shorts

This Dutch Amperex ECC83 / 12AX7 dual triode was tested on our Paul Hart-calibrated TV7/U for shorts

This new old stock-testing matched pair of GE 12BH7A dual triodes was tested on our Paul Hart-calibrated TV7/U for shorts

new in box Sylvania 25W4GT tubes tested to spec on our Paul Hart-calibrated TV7/U

Matched Pair National Union NU 6F6GT JANCNU6F6GT Milspec Vacuum Tubes Valves Duodecar T26 I have played them inThis matched pair of National Union milspec output tubes was tested on Paul Hart calibrated TV7 U for shorts, gas and transconductance. There were no shorts or gas. Tube One measured 68 while Tube Two measured 69 where minimum (65%) is 50 and 100% is. These are beautiful tubes! Both have LR batch codes. 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