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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
2626 22EW3# A 7 G 4 I -
2627 22BW6 A 3 G 1 A 2-8
2628 22DE4# A 3 G 5 E -
2629 22JF6 A 3 G 2 K 2-1
2630 22JG6 A 3 G 2 K 2-1
2631 22JU6 A 3 G 2 K 2-1
2632 22KM6 A 3 G 2 K 2-1
2633 23JS6 A 2 G 5 I 2-3
2634 23JZ9 A 7 G 3 I -
2635 23JZ9 A 7 G 10 I -
2636 23JZ9 A 7 G 8 I 2-9
2637 24JE6 A 3 G 2 K 2-1
2638 25A6 A 8 G 5 D 2-4
2639 25A7 A 8 G 5 D 2-4
2640 25A7# A 1 G 6 D -
2641 25AC5 A 8 G 5 D -
2642 25AU4# A 3 G 5 E -
2643 25AV5 A 3 G 1 D 2-8
2644 25AX4# A 3 G 5 E -
2645 25B6 A 8 G 5 D 2-4
2646 25B8 A 6 G 8 D -
2647 25B8 A 1 G 11 D 2-4
2648 25BK5 A 6 G 7 A 2-8
2649 25BQ6 A 8 G 5 D 2-4
2650 25BR3# A 11 G 9 A -
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