RCA etc. Pair (2) 35L6GT/G Beam Pentode tNOS TESTED Vacuum Tube grey glass 35L6GT Audio 1936-1954

This listing is for a Pair (2) of 35L6GT/G Beam Pentode 35L6GT vacuum tubes in the Straight-walled Glass tube shape. They have a octal base, Black plate, and D or Halo getter. Labels in stock include RCA, GE, Tung-Sol, Sylvania, Raytheon. If you're looking for a particular brand, please message right as you order - we pack and ship quickly!

These tubes each have grey or black glass. This coating was put on early tubes to reduce RF interference.

Your tubes have been fully tested on our Knight 600A tube tester with like new, NOS results (tNOS). Here's what that means: to qualify for this listing, several stringent conditions must be met: the emissions for each section must test within between 80% and 120% of bogey values, consistent with original 1936 RCA, Sylvania, GE, and/or Tung-Sol datasheet specifications for new tubes of this type. The tubes must also show no shorts, no open elements, and no measurable heater-cathode leakage. The tubes might have mechanical wear or have the label rubbed off - these are very old! Unbalanced and used-testing tubes are available in a separate listing at a significant discount. Every tube you receive from Sound By Doc is guaranteed against failure for 60 days after purchase, an industry extreme!

OPTIONS:

Want a regular white box? $1 extra
Want a tube that's packed in its original box? $3 extra per tube

Most of our tubes are tested with one of our Amplitrex AT1000 tube testers, but these fantastic testers do not have built-in support for this tube type. Therefore, this type is tested on our Knight 600A tube tester from 1969. Most vintage testers use a proportional emissions test at 30VAC and extrapolate to real, working voltages, but not this one! The Knight tester is revered for its 250VAC, real-world emissions test and for its robust gas test. Since we have not calibrated your tester, we cannot guarantee that the test results on your tester will be the same.