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Sort columns values by clicking their titles - A → Z or Z → A
| Tube | A | B | Filament | L | R | Socket | Press | Notes |
|---|---|---|---|---|---|---|---|---|
| 69 | 8 | 6 | 6.3 | 0 | 19 | B | AMPL | Mut.Cond.500. No. 2. Grid. |
| 69 | 8 | 8 | 6.3 | 0 | 19 | B | AMPL | Mut.Cond.500. No. 1. Grid. |
| 6A3 | 2 | 10 | 6.3 | 67 | 55 | A | AMPL | Mut.Cond.3000. |
| 6A4 | 1 | 5 | 6.3 | 60 | 23 | B | AMPL | Mut.Cond.3000. |
| 6A4/LA | 1 | 5 | 6.3 | 60 | 23 | B | AMPL | Mut.Cont.3000. |
| 6A5G | 7 | 5 | 6.3 | 67 | 55 | E | AMPL | Mut.Cond.3000. Shorts on 4 and 5 |
| 6A6 | 12 | 5 | 6.3 | 53 | 10 | D | AMPL | Mut.Cond.1500. |
| 6A6 | 1 | 5 | 6.3 | 53 | 10 | D | AMPL | Mut.Cond.1500. |
| 6A7 | 10 | 6 | 6.3 | 60 | 25 | D | AMPL | Mut.Cond.400. OK over 320. See note D. |
| 6A7 | 7 | 6 | 6.3 | 41 | 18 | D | AMPL | Mut.Cond.1000. See note D. |
| 6A8 | 12 | 7 | 6.3 | 60 | 30 | E | AMPL | Mut.Cond.300. OK over 240. See note D. |
| 6A8 | 7 | 7 | 6.3 | 41 | 18 | E | AMPL | Mut.Cond.1000. See note D. |
| 6AB4 | 11 | 9 | 6.3 | 70 | 8 | K | AMPL | Mut.Cond.4000. |
| 6AB5 | 12 | 2 | 6.3 | 0 | 0 | C | AMPL | Eye closed. |
| 6AB5 | 12 | 3 | 6.3 | 0 | 0 | C | AMPL | Eye open. |
| 6AB6 | 8 | 5 | 6.3 | 53 | 0 | E | AMPL | Mut.Cond.1450. |
| 6AB7 | 4 | 2 | 6.3 | 69 | 8 | E | AMPL | Mut.Cond.3500. |
| 6AC5 | 8 | 5 | 6.3 | 40 | 0 | E | AMPL | Mut.Cond.1000. |
| 6AC6 | 8 | 5 | 6.3 | 63 | 0 | E | AMPL | Mut.Cond.2400. |
| 6AC7 | 4 | 2 | 6.3 | 71 | 10 | E | AMPL | Mut.Cond.3500. |
| 6AD5 | 7 | 5 | 6.3 | 43 | 10 | E | AMPL | Mut.Cond.1000. |
| 6AD6 | 3 | 8 | 6.3 | 0 | 0 | E | AMPL | Eye no.2 open. Eye No.1 closed. |
| 6AD6 | 2 | 8 | 6.3 | 0 | 0 | E | AMPL | Eye No.1 open. Eye No.2 closed. |
| 6AD7 | 5 | 5 | 6.3 | 60 | 65 | E | DIODE | Mut.Cond.325. OK over 260. |
| 6AD7 | 8 | 5 | 6.3 | 60 | 24 | E | AMPL | Mut.Cond.2000. |
| 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. |
Last modified: Jun 5, 2026 20:40
Cape Old Radio - Since Nov, 1996
1996 - 2026 © Carlos Eduardo Lazarini da Fonseca