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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
2826 50CA5 A 1 H 2 L 2-6
2827 50CD6 A 3 H 5 D 2-8
2828 50DC4# A 7 H 5 L -
2829 50EH5 A 1 H 2 L 2-6
2830 50FA5 A 1 H 2 L 2-6
2831 50FE5 A 8 H 5 D 2-4
2832 50FK5 A 1 H 2 L 2-6
2833 50FY8 A 8 H 1 A -
2834 50FY8 A 2 H 3 A 2-7
2835 50HC6 A 1 H 2 L 2-5
2836 50HK6 A 1 H 2 L 2-5
2837 50HN5 A 3 H 1 A 2-9
2838 50JY6 A 8 H 5 D 2-4
2839 50L6 A 8 H 5 D 2-4
2840 50X6# A 2 H 3 H -
2841 50X6# A 7 H 6 H -
2842 50Y6# A 4 H 3 D -
2843 50Y6# A 8 H 5 D -
2844 50Y7# A 4 H 3 D -
2845 50Y7# A 8 H 5 D -
2846 50Z6# A 4 H 5 D -
2847 50Z6# A 8 H 5 D -
2848 50Z7# A 4 H 3 D -
2849 50Z7# A 8 H 5 D -
2850 52KU# A 4 D 12 F -
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
1996 - 2026 © Carlos Eduardo Lazarini da Fonseca