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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 |
|---|---|---|---|---|---|---|---|---|
| 6202 | 3 | 5 | 6.3 | 33 | 0 | K | RECT. STD. | Plate No.1. |
| 6265 | 1 | 9 | 6.3 | 60 | 12 | K | AMPL | Mut.Cond.2000. |
| 64/64A | 7 | 6 | 6.3 | 42 | 26 | B | AMPL | Mut.Cond.1050. |
| 6485 | 7 | 9 | 6.3 | 68 | 15 | K | AMPL | Mut.Cond.5000. |
| 65/65A | 7 | 6 | 6.3 | 41 | 23 | B | AMPL | Mut.Cond.1000. |
| 6626 | 4 | 4 | 0 | 0 | 0 | H | GAS No. 1 | OK over 200. Shorts on 4 and 5. See note D. |
| 6627 | 4 | 4 | 0 | 30 | 0 | H | GAS No. 1 | OK over 200. Shorts on 4 and 5. See note D. |
| 6660 | 7 | 9 | 6.3 | 70 | 0 | K | AMPL | Mut.Cond.4300. |
| 6661 | 1 | 9 | 6.3 | 60 | 12 | A | AMPL | Mut.Cond.2000. |
| 6662 | 7 | 9 | 6.3 | 70 | 10 | K | AMPL | Mut.Cond.3800. |
| 6663 | 4 | 2 | 6.3 | 60 | 0 | K | DIODE | Shorts on 2 and 3. |
| 6663 | 9 | 2 | 6.3 | 60 | 0 | K | DIODE | Shorts on 2 and 3. |
| 6664 | 11 | 9 | 6.3 | 70 | 8 | K | AMPL | Mut.Cond.4000. |
| 6669 | 8 | 5 | 6.3 | 70 | 17 | L | AMPL | Mut.Cond.3700. |
| 6670 | 4 | 2 | 12.6 | 60 | 25 | E | AMPL | Use adapter #6 for triode #2. |
| 6670 | 4 | 2 | 12.6 | 60 | 25 | E | AMPL | Use adapter #5 for triode #1. |
| 6671 | 4 | 2 | 12.6 | 15 | 25 | E | AMPL | Use adapter #6 for triode #2. |
| 6671 | 4 | 2 | 12.6 | 15 | 25 | E | AMPL | Use adapter #5 for triode #1. |
| 6676 | 1 | 9 | 6.3 | 62 | 18 | K | AMPL | Mut.Cond.2200. |
| 6679 | 4 | 2 | 12.6 | 15 | 25 | E | AMPL | Use adapter #6 for triode #2. |
| 6679 | 4 | 2 | 12.6 | 15 | 25 | E | AMPL | Use adapter #5 for triode #1. |
| 6680 | 4 | 2 | 12.6 | 60 | 25 | E | AMPL | Use adapter #6 for triode #2. |
| 6680 | 4 | 2 | 12.6 | 60 | 25 | E | AMPL | Use adapter #5 for triode #1. |
| 67/67A | 1 | 6 | 6.3 | 40 | 34 | B | AMPL | Mut.Cond.1000. |
| 68/68A | 7 | 6 | 6.3 | 41 | 32 | B | AMPL | Mut.Cond.1050. |
| 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