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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 |
|---|---|---|---|---|---|---|---|---|
| 6U6 | 8 | 5 | 6.3 | 73 | 27 | E | AMPL | Mut.Cond.6200. |
| 6U7 | 8 | 5 | 6.3 | 56 | 17 | E | AMPL | Mut.Cond.1600. |
| 6V6 | 8 | 5 | 6.3 | 67 | 25 | E | AMPL | Mut.Cond.3000. |
| 6V7 | 10 | 2 | 6.3 | 0 | 0 | E | DIODE | Diode No. 2 |
| 6V7 | 10 | 5 | 6.3 | 0 | 0 | E | DIODE | Diode No. 1 |
| 6V7 | 7 | 5 | 6.3 | 40 | 32 | E | AMPL | Mut.Cond.975. |
| 6W4 | 12 | 4 | 6.3 | 40 | 0 | G | RECT. STD. | See note D. |
| 6W5 | 10 | 2 | 6.3 | 40 | 0 | E | RECT. STD. | See note D. |
| 6W5 | 2 | 9 | 6.3 | 40 | 0 | E | RECT. STD. | See note D. |
| 6W6 | 8 | 5 | 6.3 | 67 | 46 | E | AMPL | Mut.Cond.3000. |
| 6W7 | 1 | 9 | 6.3 | 41 | 20 | E | AMPL | Mut.Cond.1000. |
| 6X4 | 6 | 5 | 6.3 | 35 | 0 | K | RECT. STD. | Plate No. 2. See note D. |
| 6X4 | 3 | 5 | 6.3 | 35 | 0 | K | RECT. STD. | Plate No. 1. See note D. |
| 6X5 | 10 | 2 | 6.3 | 40 | 0 | E | RECT. STD. | See note D. |
| 6X5 | 2 | 9 | 6.3 | 40 | 0 | E | RECT. STD. | See note D. |
| 6Y5 | 12 | 8 | 6.3 | 40 | 0 | C | RECT. STD. | See note D. |
| 6Y5 | 9 | 8 | 6.3 | 40 | 0 | C | RECT. STD. | See note D. |
| 6Y6 | 8 | 5 | 6.3 | 60 | 42 | E | AMPL | Set MICROMHOS switch at 6000. |
| 6Y7 | 12 | 5 | 6.3 | 39 | 12 | E | AMPL | Mut.Cond.1000. |
| 6Y7 | 2 | 9 | 6.3 | 39 | 12 | E | AMPL | Mut.Cond.1000. |
| 6Z3 | 1 | 5 | 6.3 | 40 | 0 | A | RECT. STD. | See note D. |
| 6Z4 | 5 | 1 | 6.3 | 40 | 0 | B | RECT. STD. | See note D. |
| 6Z4 | 7 | 7 | 6.3 | 40 | 0 | B | RECT. STD. | See note D. |
| 6Z5 | 12 | 12 | 6.3 | 40 | 0 | C | RECT. STD. | See note D. |
| 6Z5 | 9 | 12 | 6.3 | 40 | 0 | C | RECT. STD. | 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
1996 - 2026 © Carlos Eduardo Lazarini da Fonseca