DESCRIPTION:

Tung-Sol JTL 12AX7 Black Plate SQ Getter 

 Condition

Tube:  Low 81/79% 

  Lettering: 80%

Date Code: 3229-39 Fading

Some boxes are brittle, or have imperfections, starting to crumble

TESTED IN A HICKOK VT-7D/U

1) Filament 2) checked for shorts, Leakage 3) Grid (Gas) 

4)  Emission Test 

5) Dynamic Mutual Conductance 

Result on 

Tube 1 ( 40/39 GM ) Minimum Value = 32/32 = low 81/79%

Where NOS Value =49/49

Also Tested on Hickok 6000 Good 82/80%

Since vacuum tubes were made 30 ? 70 years ago New Old Stock or Used may have cosmetic evidence of age.  This includes poor print, oxidized pins, faint discoloration, or poorly box

Two testers are never the same.  So this shows what I get, and what you get may be slightly 10-15% different.

If I state any values they are for a guide only.

No guarantee is made that any tube will test to a specific value in the buyer's tube tester, most all tubes are tested on at least two tube testers

This because of the variation in line voltage, different bias, and circuits.

 Return Policy

Guarantee:

Contact Us

If you're in any way dissatisfied with your purchase, do not hesitate to contact us through "MY MESSAGES". We will do our best to solve it for you. We are committed to ensuring that you are completely satisfied with every transaction.

So Please DO contact us first to get a better solution before you would leave

 Negative or Neutral feedback.