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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
3251 7716 A 1 F 2 A -
3252 7716 A 6 F 7 A 2-8
3253 7717 A 2 E 1 L 2-6
3254 7719 A 3 F 2 A -
3255 7721 A 1 E 2 A 2-9
3256 7722 A 1 E 2 A -
3257 7724 B 7 F 8 A -
3258 7724# A 1 F 6 A -
3259 7724# A 3 F 2 A -
3260 7728 A 3 F 2 A -
3261 7728 A 8 F 7 A -
3262 7729 A 3 F 2 A -
3263 7729 A 8 F 7 A -
3264 7730 A 3 F 2 A -
3265 7730 A 8 F 7 A -
3266 7731 A 8 E 9 A -
3267 7731 A 7 E 2 A -
3268 7732 A 2 E 1 L 2-6
3269 7733 A 1 F 2 A 2-8
3270 7734 A 2 E 3 A -
3271 7734 A 7 E 8 A 2-1
3272 7738 A 5 E 6 L -
3273 7754 A 7 E 6 A 2-1
3274 7802 A 3 E 1 E -
3275 7802 A 6 E 4 E -
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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