Beautiful Condition Pair of Tubes that seem unused. Both test strong and have completely matching date codes as well as the JA production stamp.
Item Tag: 5814A
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1 x CRC-5814A(12AU7) RCA Tube*Black Plates-O*Very Strong Testing*Command*#2
Tested on enhanced Triplet E3444 Laboratory Tester by Paul Hart of Roswell Ga. Tubes may also be operated under the test conditions for extended periods to be sure that it is stable. 1 x 5814A-12au7 RCA Tube.
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One 1950s Raytheon 5814A (ECC82 12AU7) Tube – Black Plates, 3 Mica, Top [ ]
Type 5814A vacuum tube. One tube, circa 1950s, U.S.A made by Raytheon for International . (Triode#1 / Triode#2). Tube features black ridge plates, 3 mica spacersand an angled-mount ‘slightly-bended rectangular’ getter on top.
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5 Nice Tested RCA 5814A (12AU7) Vacuum Tubes
1 LOT OF 5 EACH RCA 5814(A) TUBES. TESTED STRONG TV7D (90+ MIN).
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QTY 6 – MIL SPEC – 5814A – VACUUM TUBES – AMPLITREX TESTED – MIXED – VG-GD
MIXED – 5814A – VACUUM TUBES – AMPLITREX TESTED -.
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2 x 5814A (12AU7) RCA Tubes*Very Strong Matched*Mica-Black-O*Command Type* #10
2 x 5814A (12AU7) RCA Tubes. Tested on Enhanced Triplet E3444 Laboratory Tester. Tubes may also be operated under the test conditions for extended periods to be sure that it is stable. What were your tubes tested at?.
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2 x JG-5814A(12au7) GE Tubes *Foil O Getter*Tested Strong*
2 x JG-5814A(12au7) GE Tubes. Tested on enhanced Triplet E3444. Foil O Getter. Tubes may also be operated under the test conditions for extended periods to be sure that it is stable. What were your tubes tested at?.
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GE – General Electric 5814A Vacuum Tube — CS1
Tube Number: 5814A. Tube was tested on an Amplitrex AT1000. Quantity: 1 Tube.
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Pair, RCA Radiotron Type 5814A Radio/Audio Tubes, NOS
One tests at 110% of the specifications for emission Em, and 109% of the specifications for mutual conductance, Gm on one plate. The other plate tests at 100% Em and 100% Gm. The second tube tests at 110% Em and 109% Gm on on plate and 112% Em and 109% Gm on the other plate.