Matched Pair National Union NU 6F6GT JANCNU6F6GT Milspec Vacuum Tubes Valves

Matched Pair National Union NU 6F6GT JANCNU6F6GT Milspec Vacuum Tubes ValvesThis 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

an engraved base and terrific flashing

but will work fine in virtually all applications

Transconductance measured 15

46 and 52 where minimum is (65%) is 36 and 100% is 55 and 100% is 55

The LPs themselves are heavy and beefy and there is a fair amount of surface noise in quiet passages -- of which there are many

This matched pair of RCA 6AQ5 output tubes was tested on our Paul Hart-calibrated TV7/U for shorts

Plate current draw was 31 milliamps for both

This new old stock-testing matched pair of Sylvania 6AU6 tubes was tested on our Paul Hart-calibrated TV7/U for shorts

This matched pair of RCA 6FQ7 / 6CG7 dual triodes was tested on our TV7/U for shorts

D getters and copper support rods

It measured 42/54 where minimum (65%) is 40/40 and 100% is 62/62

These three Sylvania 17JZ8 tubes tested to spec on our Paul Hart-calibrated TV7/U