RCA 6DS4 Nuvistor Vacuum Valve NOS NIB

RCA 6DS4 Nuvistor Vacuum Valve NOS NIBThis new old stock, new in box RCA 6DS4 nuvistor tube 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 FORMS OF SHIPPING EXCEPT MEDIA MAIL ARE AUTOMATICALLY INSURED UP TO $100. ETSY PURCHASE PROTECTION COVERS ITEMS UP TO

new in box US-made 45Z3 tubes tested to spec on our Paul Hart-calibrated TV7/U

(New US-made 6V6s typically test with plate current from the mid-teens to mid 30s with transconductance from 2300 micromhos or so

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

IN NEARLY 9000 SALES IN BOTH OF OUR ETSY STORES

where new / nominal is within one standard deviation of 1900

This Sylvania 40KD6 tube tested 71 on our Paul Hart-calibrated TV7/U where minimum is 54 and new is 100

copper support rods and gray plates

new in box RCA 5Z4 -- and another just like it -- tested to spec on on our Paul Hart-calibrated TV7/U

Selections include "I Go The Road Alone

6 milliamps/2150 micromhos and 18

It measured 38 in its triode section where minimum (65%) is 25 and 100% is 39

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