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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
2276 12R-K19# A 11 F 9 A -
2277 12R-LL5 A 3 F 2 A -
2278 12R-LL5 A 8 F 7 A -
2279 12S8 A 2 F 11 D -
2280 12S8# C 2 F 1 D -
2281 12S8# C 2 F 4 D -
2282 12S8# C 5 F 3 D -
2283 12SA7 A 6 F 5 D 2-4
2284 12SB7 A 6 F 5 D 2-4
2285 12SC7 A 6 F 3 E -
2286 12SC7 A 6 F 4 E -
2287 12SF5 A 2 F 3 E -
2288 12SF7 A 3 F 2 E 2-4
2289 12SF7# C 3 F 5 E -
2290 12SG7 A 3 F 4 D 2-6
2291 12SH7 A 3 F 4 D 2-6
2292 12SJ7 A 5 F 4 D 2-6
2293 12SK7 A 5 F 4 D 2-6
2294 12SL7 A 3 F 1 E -
2295 12SL7 A 6 F 4 E -
2296 12SN7 A 3 F 1 E -
2297 12SN7 A 6 F 4 E -
2298 12SQ7 A 3 F 2 E -
2299 12SQ7# C 3 F 4 E -
2300 12SQ7# C 3 F 5 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
1996 - 2026 © Carlos Eduardo Lazarini da Fonseca