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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 |
|---|---|---|---|---|---|---|---|---|
| 6DC6 | 7 | 9 | 6.3 | 64 | 21 | K | AMPL | Mut.Cond.2500. |
| 6DE6 | 1 | 9 | 6.3 | 62 | 18 | K | AMPL | Mut.Cond.2200. |
| 6E5 | 12 | 2 | 6.3 | 0 | 0 | C | AMPL | Eye closed. |
| 6E5 | 12 | 3 | 6.3 | 0 | 0 | C | AMPL | Eye open. |
| 6E6 | 12 | 5 | 6.3 | 52 | 23 | D | AMPL | Mut.Cond.1400. |
| 6E6 | 1 | 5 | 6.3 | 52 | 23 | D | AMPL | Mut.Cond.1400. |
| 6E7 | 7 | 6 | 6.3 | 55 | 20 | D | AMPL | Mut.Cond.1500. |
| 6F5 | 10 | 5 | 6.3 | 43 | 10 | E | AMPL | Mut.Cond.1000. |
| 6F6 | 8 | 5 | 6.3 | 60 | 24 | E | AMPL | Mut.Cond.2000. |
| 6F7 | 10 | 6 | 6.3 | 60 | 23 | D | AMPL | Mut.Cond.450. OK over 360. |
| 6F7 | 7 | 6 | 6.3 | 45 | 23 | D | AMPL | Mut.Cond.1100. |
| 6F8 | 11 | 7 | 6.3 | 60 | 13 | E | AMPL | Mut.Cond.2000. Plate No. 2. |
| 6F8 | 8 | 7 | 6.3 | 60 | 13 | E | AMPL | Mut.Cond.2000. Plate No. 1. |
| 6G5 | 12 | 2 | 6.3 | 0 | 0 | C | AMPL | Eye closed. |
| 6G5 | 12 | 3 | 6.3 | 0 | 0 | C | AMPL | Eye open. |
| 6G6 | 8 | 5 | 6.3 | 61 | 19 | E | AMPL | Mut.Cond.2100. |
| 6H46T | 4 | 8 | 6.3 | 50 | 0 | E | DIODE | |
| 6H6 | 7 | 5 | 6.3 | 50 | 0 | E | DIODE | |
| 6H6 | 7 | 2 | 6.3 | 50 | 0 | E | DIODE | |
| 6J4 | 8 | 4 | 6.3 | 74 | 0 | L | AMPL | Mut.Cond.6000. Short on 3. |
| 6J5 | 7 | 5 | 6.3 | 60 | 24 | E | AMPL | Mut.Cond.2000. |
| 6J6 | 11 | 8 | 6.3 | 69 | 11 | K | AMPL | Mut.Cond.5000. See note D. |
| 6J6 | 1 | 2 | 6.3 | 69 | 11 | K | AMPL | Mut.Cond.5000. See note D. |
| 6J7 | 1 | 9 | 6.3 | 48 | 18 | E | AMPL | Mut.Cond.1225. |
| 6J8 | 11 | 5 | 6.3 | 0 | 25 | E | AMPL | Mut.Cond.500. See note D. |
| 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
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