9 RCA 6W4 6W4GT Vacuum Tubes NOS NIB Lot Of Nine

9 RCA 6W4 6W4GT Vacuum Tubes NOS NIB Lot Of NineThis lot of nine new old stock, new in box RCA 6W4 6W4GT tubes 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 "LOWTECHELEC" 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

NOR IS THERE A WAY TO DETERMINE WHETHER THEY MAY HAVE FATAL FLAWS

Tube One's etching is "5654" while Tube Two's is "6AK5

side D-getters and excellent flashing

There is also a shield between the triodes for reduced cross talk

an O-getter

STOLEN AND LOST

Tube One measured 30 while Tube Two measured 32 where minimum (65%) is 22

This matched pair of milspec Raytheon black plate JRP-6AK5 / 6AK5 tubes was tested on our Paul Hart-calibrated TV7/U tester

new in box industrial-grade GE 6679 / 12AT7 dual triode was tested on my Hickok 600A for shorts

64 and 64 where minimum (65%) is 50 and 100% is 77

great flashing a and sutured tops

Transconductance measured 49/56