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Raytheon

Raytheon USA 6BL8 [ECF80] Gray Plate Top O Getter Vacuum Tube 88%

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SKU:
TR3601
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$5.01

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Description

Matched, Tested & Guaranteed Vacuum Tubes

All tubes are guaranteed to be 100% as described or your money back. All tubes have been tested for mutual transconductance, shorts, leaks, gas and noise on my calibrated Hickok TV-7/U.

Any pair of quad described as matched means that the tubes will have the same exact construction and will test within a close range of each other for Mutual Transconductance. The last criteria is date codes, which I do match when possible.

Actual Brand: Raytheon
Printed Brand: Raytheon
Type: 6BL8 [ECF80]
Number of Tubes: Single
Plate Construction: Gray
Getter Construction: Top O
Country: USA
Visible Date Codes: M20
Lettering Condition: Good
Box Included: 1 Box-Original
Tests NOS: No
Actual NOS (Some Tubes Test NOS but have a few hours on them): No
Notes:
Mutual Transconductance (Gm) Test Data: 44/76 where the minimum good value is 32/36 and the New Old Stock (NOS) value is 50/55 or 88% of what a new tube should test

 

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