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*
One tube, circa 1967, Germany made by Siemens for RCA,
type 6AQ8 / ECC85 vacuum tube
as pictured.

Condition:
New Old Stock / New In Box

Silk-Screening:
Worn off almost completely

Acid Etched Codes:
tU8  /  ≠7L

Tube Type:
                tU  (i.e. 6AQ8/ECC85)

Factory/Date Codes:
≠7L

Tube features grey plates, silver shield between anodes, copper grids and a top-mounted 'Halo-Ring' getter construction.

*

Hickok TV-7B/U* tested

@ 109/102

minimum acceptable value for a good tube:
50/50

(Triode#1 / Triode#2)

*Hickok TV-7B/U is a mutual conductance (Gm) type tube tester. It does check for mutual conductance which is a more accurate measure of tube's age.

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