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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
2201 12F8# C 7 F 6 A -
2202 12F8# C 7 F 1 A -
2203 12FA6 A 2 F 1 L 2-6
2204 12FK6 A 2 F 1 L -
2205 12FK6# C 2 F 5 L -
2206 12FK6# C 2 F 6 L -
2207 12FM6 A 2 F 1 L -
2208 12FM6# C 2 F 5 L -
2209 12FM6# C 2 F 6 L -
2210 12FQ7 A 3 F 2 A -
2211 12FQ7 A 8 F 7 A -
2212 12FQ8 A 9 F 2 A -
2213 12FQ8 A 9 F 7 A -
2214 12FR8 A 2 F 1 A -
2215 12FR8 B 3 F 12 A 4-6
2216 12FR8# B 2 F 8 A -
2217 12FV7 A 3 F 2 A -
2218 12FV7 A 8 F 7 A -
2219 12FX5 A 1 F 2 L 2-6
2220 12FX8# A 6 F 12 A -
2221 12FX8 A 7 F 2 A 2-1
2222 12FY8 A 8 F 1 A -
2223 12FY8 A 2 F 3 A 2-7
2224 12G4 A 7 F 6 L -
2225 12G8 B 2 F 3 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