Balanced sides at~ 2%. Gas (Grid Current): Passed. Mutual Conductance (GM)Test: 49 & 50 (49=NOS Average & 32 = Good MINIMUM). Gain: (92.8 & 94.8) MU and side balance. Test results will vary between testers as it is not an exact science.
Item Tag: International Servicemaster
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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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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.