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EICO 635 Tube Tester





Select or type a tube name to get specific settings for the Eico 635 Tube Tester.

Sort columns values by clicking their titles - A → Z or Z → A

ID Tube 1 2 3 4 Socket Short Test
2051 12C5 A 1 F 2 L 2-6
2052 12C8 A 8 F 11 D -
2053 12C8# C 8 F 4 D -
2054 12C8# C 8 F 5 D -
2055 12CA5 A 1 F 2 L 2-6
2056 12CB6 A 2 F 1 L 2-6
2057 12CD6 A 3 F 5 D 3-8
2058 12CK3# A 9 F 7 K -
2059 12CL3# A 9 F 2 K -
2060 12CM6 A 7 F 3 A 2-1
2061 12CN5 A 1 F 2 L 2-6
2062 12CR6 A 1 F 7 L 2-6
2063 12CR6# D 1 F 2 L -
2064 12CS5 A 2 F 3 A 2-1
2065 12CS6 A 2 F 1 L 2-6
2066 12CS7 A 9 F 3 A -
2067 12CS7 A 8 F 7 A -
2068 12CT8 A 3 F 2 A -
2069 12CT8 A 9 F 8 A 2-7
2070 12CU5 A 1 F 2 L 2-6
2071 12CU6 A 8 F 5 D 2-4
2072 12CX6 A 7 F 1 L 2-6
2073 12D4# A 3 F 5 E -
2074 12D8 A 9 F 3 A -
2075 12D8 A 2 F 3 A 2-1
Important
Note A: Set all switches before inserting the tube in its socket.
Note B: First test for shorts before making quality test.
Note C: If "shorts-grid leakage" indicator glows when tube is inserted in its proper socket do not test for quality. Damage to the circuit of the tube tester may occur or you may damage the tube.
Note D: Tubes listed with a "#" next to it is read on diodes OK scale.

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Last modified: Jun 5, 2026 20:40
Cape Old Radio - Since Nov, 1996
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