RCA Cunningham
Date Matched Pair RCA Cunningham USA 79 Black Plate Engraved Tested Tube 69%
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- SKU:
- PS557
- UPC:
- Type 79
- MPN:
- Type 79
- Availability:
- Ships in 1 business day or less.
- Shipping:
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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.
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: RCA Cunningham
Printed Brand: Cunningham
Type: 79
Number of Tubes: Date Code Matched Pair
Plate Construction: Black
Getter Construction: Bottom D Foil
Country: USA
Visible Date Codes: F6 (both)
Lettering Condition: Average
Box Included: 2 Boxes-Original
Tests NOS: No
Actual NOS (Some Tubes Test NOS but have a few hours on them): No
Notes: Engraved Base
Mutual Transconductance (Gm) Test Data: 28/30 & 28/30 where the minimum good value is 25/25 and the New Old Stock (NOS) value is 41/41 or 69% of what a new tube should test
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Printed Brand: Cunningham
Type: 79
Number of Tubes: Date Code Matched Pair
Plate Construction: Black
Getter Construction: Bottom D Foil
Country: USA
Visible Date Codes: F6 (both)
Lettering Condition: Average
Box Included: 2 Boxes-Original
Tests NOS: No
Actual NOS (Some Tubes Test NOS but have a few hours on them): No
Notes: Engraved Base
Mutual Transconductance (Gm) Test Data: 28/30 & 28/30 where the minimum good value is 25/25 and the New Old Stock (NOS) value is 41/41 or 69% of what a new tube should test