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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
2001 12BA7 A 3 F 2 A 2-1
2002 12B-B14 A 3 F 1 O 2-6
2003 12BD5 A 3 F 1 D 2-8
2004 12BD6 A 7 F 1 L 2-6
2005 12BE3# A 7 F 10 I -
2006 12BE6 A 2 F 1 L 2-6
2007 12BE8 A 3 F 1 A -
2008 12BE8 A 8 F 9 A 2-7
2009 12BF6 A 2 F 1 L -
2010 12BF6# D 2 F 5 L -
2011 12BF6# D 2 F 6 L -
2012 12BF11 A 2 F 3 I 2-6
2013 12BF11 A 9 F 8 I 2-10
2014 12BH7 A 3 F 2 A -
2015 12BH7 A 8 F 7 A -
2016 12BH11 A 2 F 4 I -
2017 12BH11 A 5 F 6 I -
2018 12BH11 A 11 F 8 I 2-9
2019 12BK5 A 6 F 7 A 2-8
2020 12BK6 A 2 F 1 L -
2021 12BK6# C 2 F 5 L -
2022 12BK6# C 2 F 6 L -
2023 12BL6 A 7 F 1 L 2-6
2024 12BL7 A 6 F 4 E -
2025 12BL7 A 3 F 1 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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