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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
1776 8X9 A 2 E 3 C 2-8
1777 8X9 A 1 E 10 c -
1778 9A8 A 8 E 9 A -
1779 9A8 A 7 E 2 A 2-3
1780 9AK8 A 7 E 8 A -
1781 9AK8# A 7 E 6 A -
1782 9AK8# A 7 E 1 A -
1783 9AK8# A 3 E 2 A -
1784 9AQ8 A 3 E 2 A -
1785 9AQ8 A 8 E 7 A -
1786 9AU7 A 3 E 2 A -
1787 9AU7 A 8 E 7 A -
1788 9BJ11 A 5 E 6 I 2-3
1789 9BJ11 A 5 E 11 I 2-9
1790 9BM5 A 2 E 1 L 2-6
1791 9BR7 A 3 E 2 A -
1792 9BR7# A 8 E 6 A -
1793 9BR7# A 8 E 7 A -
1794 9BR8 A 3 E 2 A -
1795 9BR8 A 8 E 9 A 2-7
1796 9BW6 A 3 E 1 A -
1797 9CL8 A 3 E 1 A -
1798 9CL8 A 8 E 9 A 2-7
1799 9D6 A 2 E 1 L 2-6
1800 9D7 A 1 E 2 A 2-8
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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