Description
Tube Type / Number: 6BL8 [ECF80]
Actual Brand*: Mullard
Printed Brand: Motorola Golden
Quantity of Tubes: Matched Pair
Plate Construction: Grey
Getter Construction: Top O
Country of Manufacture: Gt. Britain
Visible Date Codes: L-896 1022 446 7M
Lettering Condition: 90 Percent
Year Made:
Number of Mica Spacers: 2
Mica Shape: Saw
Smoked Glass? Clear
Engraved Base? No
Boxes Included? Multiple Boxes - NONE Original
Notes: ** Please note, the reason these tubes tested high on one side is due to oscillation within the tube tester and does not indicate a problem.
Gm Test Results: 48/88 & 50/86
Minimum Good Value: 34/36
NOS Test Value: 56/58
Life Calculation: 87/157% & 89/153% (where 65% = fail)
Tests as NOS?: No
True NOS?*: No
** Please note, many tubes will test NOS but will actually have a few hours of use on them. A truly NOS tube will have excellent getter flashing condition, no dirt/grime, usually in the original box, and no filament deposits. If a tube is listed as "tests NOS" but is listed as "not True NOS" please expect the tube to have a small amount of use *
All tubes have been tested using only the best tube testers. We have a large fleet of tube testers, and every single one of them has been calibrated within the last year by industry experts. We mainly use the Hickok TV-7D/U, but occasionally we may use a Hickok 539, 533A, or 600A.