Matched Pair RCA Cunningham Radiotron Number Type 30 #30 Vacuum Tubes Engraved Base Shoulder ST Shape NOS-Testing

Matched Pair RCA Cunningham Radiotron Number Type 30 #30 Vacuum Tubes Engraved Base Shoulder ST Shape NOS-TestingThis new old stock TESTING matched pair of engraved base RCA Cunningham Radiotron number type 30 tubes tested 34 and 36, respectively, on our Paul Hart calibrated TV7 U where minimum is 23 and 100% is 35. 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

It has a nifty

This was originally a package that contained five and two have been used

new in box Sylvania 12DQ6 / 12DQ6B / 12GW6 tube tested to spec on our Paul Hart-calibrated TV7/U

pops and ticks

There were no shorts or gas and they measure as follows:

Interesting aside: my paternal great aunt who was from Atlanta did a screen test for "Gone With The Wind

new in box GE 6CG3 / 6CE3 / 6CD3 tested to spec on our Paul Hart-calibrated TV7/U

7 milliamps and transconductance was 1510 micromhos for Tube One

noise or gas and they tested as follows:

This matched pair of Hytron gray glass 6V6GT output tubes was tested on our Maxi-Matcher 2 with 400 volts on the plates and a bias of -36 volts for shorts

It has the nostalgic shoulder / Coke bottle glass envelope

42 and 45 where minimum (65%) is 30