New Triplett chart =4000/2100 & 6200/3300 micromhos. Matched Pair. 'Matched' I consider to be within 10%. 'Closely Matched' I consider to be within about 5%. 'Matched' refers to comparing the gm test results between the lowest to the highest of the identical sections of a set of tubes.
These tubes were made for themilitary and are printed "JAN 6AU6WB ". They areruggedized versions of a6AU6A tube. These tubes havematching date codes and are in theoriginal boxes. Ref: Minimum readings should be 1380 micromhos (60%) and new tubes should test at 2300 or more micromhos.
Up for sale are 2 RCA 6LJ6A/6LH6A Tubes. Tested on a Sencore Mighty Mite tube tester at 100/120 & 100/120. Also checked for shorts & grid leakage.
JAN CTL TUNG SOL 6A3 tubes. NOS tubes. You get both.
FIVE NEW SYLVANIA 6AU6A HiFi Ham Radio Amp Vacuum Tubes. Tubes have matching production codes. Tubes checked good on a B&K 667 Tube Tester.
Tube has black smooth plates, bottom side rectangular getter. printed base, tube tests: 98, 100 %. Tested on Triplett tube tester for shorts and leaks as well.