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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
376 5BK7 A 8 D 7 A -
377 5BQ7 A 3 D 2 A -
378 5BQ7 A 8 D 7 A -
379 5BR8 A 3 D 1 A -
380 5BR8 A 8 D 9 A 2-7
381 5BS8 A 3 D 2 A -
382 5BS8 A 8 D 7 A -
383 5BT8 A 9 D 8 A 2-7
384 5BT8# B 3 D 1 A -
385 5BT8# B 3 D 2 A -
386 5BW8 A 7 D 6 A 2-8
387 5BW8# B 2 D 1 A -
388 5BW8# B 2 D 3 A -
389 5BZ7 A 3 D 2 A -
390 5BZ7 A 8 D 7 A -
391 5CG8 A 3 D 1 A -
392 5CG8 A 3 D 9 A 2-7
393 5CL8 A 3 D 1 A -
394 5CL8 A 8 D 9 A 2-7
395 5CM6 A 7 D 3 A 2-1
396 5CM8 A 8 D 9 A -
397 5CM8 A 3 D 2 A 2-7
398 5CQ8 A 8 D 9 A -
399 5CQ8 A 7 D 2 A 2-3
400 5CR8 A 8 D 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
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