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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
2751 35Z4# A 8 G 5 D -
2752 35Z5# A 8 G 5 D -
2753 35Z6# A 4 G 3 D -
2754 35Z6# A 8 G 5 D -
2755 36AM3# A 7 G 5 L -
2756 38A3# A 3 H 9 A -
2757 38HE7# A 4 G 2 I -
2758 38HE7 A 8 G 9 I 2-11
2759 38HK7# A 4 G 2 I -
2760 38HK7 A 8 G 9 I 2-11
2761 40FR5 A 1 H 2 L 2-6
2762 40KD6 A 2 H 5 I 2-3
2763 40Z5 A 1 H 2 L 2-6
2764 42KN6 A 2 H 5 I 2-3
2765 45B5 A 3 H 2 A 2-9
2766 45Z3# A 4 H 2 L -
2767 45Z5# A 8 H 5 D -
2768 50A5 A 7 H 6 H 2-3
2769 50AX6# A 4 H 3 D -
2770 50AX6# A 8 H 5 D -
2771 50B5 A 2 H 1 L 2-6
2772 50BK5 A 6 H 7 A 2-8
2773 50BM8 A 8 H 9 A -
2774 50BM8 A 2 H 3 A 2-7
2775 50C5 A 1 H 2 L 2-6
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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