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I-177 Tube Tester
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Select or type a tube name to get specific settings for the I-177 Tube Tester.
Sort columns values by clicking their titles - A → Z or Z → A
| Tube | A | B | Filament | L | R | Socket | Press | Notes |
|---|---|---|---|---|---|---|---|---|
| 6R7 | 10 | 2 | 6.3 | 0 | 0 | E | DIODE | |
| 6R7 | 10 | 5 | 6.3 | 0 | 0 | E | DIODE | |
| 6R7 | 7 | 5 | 6.3 | 60 | 17 | E | AMPL | Mut.Cond.1900. |
| 6S7 | 8 | 5 | 6.3 | 57 | 22 | E | AMPL | Mut.Cond.1750. |
| 6S7G | 8 | 5 | 6.3 | 57 | 22 | E | AMPL | Mut.Cond.1750. |
| 6S8 | 1 | 2 | 6.3 | 0 | 0 | G | DIODE and 117N7 | Diode No. 3 |
| 6S8 | 3 | 9 | 6.3 | 0 | 0 | G | DIODE | Diode No. 2 |
| 6S8 | 2 | 9 | 6.3 | 0 | 0 | G | DIODE | Diode No. 1 |
| 6S8 | 5 | 9 | 6.3 | 36 | 8 | G | AMPL | Mut.Cond.900. Triode Section |
| 6SA7 | 7 | 7 | 6.3 | 28 | 17 | E | AMPL | Mut.Cond.750. See note D. |
| 6SA7 | 1 | 7 | 6.3 | 28 | 17 | E | AMPL | Mut.Cond.750. See note D. |
| 6SB7 | 7 | 7 | 6.3 | 60 | 33 | E | AMPL | Mut.Cond.300. OK over 240. See note D. |
| 6SB7 | 1 | 7 | 6.3 | 52 | 13 | E | AMPL | Mut.Cond.750. See note D. |
| 6SC7 | 1 | 3 | 6.3 | 42 | 0 | G | AMPL | Mut.Cond.1000. |
| 6SC7 | 10 | 3 | 6.3 | 42 | 0 | G | AMPL | Mut.Cond.1000. |
| 6SD7 | 4 | 2 | 6.3 | 64 | 13 | E | AMPL | Mut.Cond.2500. |
| 6SF5 | 7 | 4 | 6.3 | 56 | 13 | E | AMPL | Mut.Cond.1000. |
| 6SF7 | 8 | 1 | 6.3 | 0 | 0 | G | DIODE | |
| 6SF7 | 6 | 7 | 6.3 | 60 | 0 | G | AMPL | Mut.Cond.2000. |
| 6SG7 | 4 | 2 | 6.3 | 68 | 10 | E | AMPL | Mut.Cond.3300. |
| 6SH7 | 4 | 2 | 6.3 | 69 | 0 | E | AMPL | Mut.Cond.3400. |
| 6SJ7 | 4 | 2 | 6.3 | 56 | 18 | E | AMPL | Mut.Cond.1575 |
| 6SK7 | 4 | 2 | 6.3 | 59 | 18 | E | AMPL | Mut.Cond.1900. |
| 6SL7 | 10 | 4 | 6.3 | 53 | 0 | G | AMPL | Mut.Cond.1400. Shorts on 2 and 3. |
| 6SL7 | 4 | 1 | 6.3 | 53 | 0 | G | AMPL | Mut.Cond.1400. Shorts on 2 and 3. |
| Important | ||||||||
|---|---|---|---|---|---|---|---|---|
| This I-177 data-base was created using data from I-177 beta 1.08 worksheet, from July 5, 2002. A great compilation by Nolam E. Lee. | ||||||||
| Note A: The plate cap of the tube under test should be connected to the upper left contact of the 6-pin (C) socket. A 12-inch lead with clip and bananna plug is provided for this purpose. | ||||||||
| Note B: Connect the plate cap (nearest the operator) to the upper left contact of the 6-pin (C) socket; use the lead provided. Connect the grid lead to the remaining cap on the tube. | ||||||||
| Note C: Set the MICROMHOS switch at 6000 when testing this section if the tube tester bears either Order No. 27613-Phila-44-52 or 52346-Phila-45-10 on the nomenclature plate. | ||||||||
| Note D: This test is only a partial indication of a good tube. A complete test is only possible when using equipment. | ||||||||
| Note E: Do not tap on this tube when testing for short because damage to the tube may result. | ||||||||
| Note F: The Mutual Conductance values listed are averages for new tubes and only for a guide. |
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Last modified: Jun 5, 2026 20:40
Cape Old Radio - Since Nov, 1996
1996 - 2026 © Carlos Eduardo Lazarini da Fonseca