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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 |
|---|---|---|---|---|---|---|---|---|
| 89 | 2 | 5 | 6.3 | 54 | 30 | C | AMPL | Mut.Cond.1550. |
| 89Y | 2 | 5 | 6.3 | 54 | 30 | C | AMPL | Mut.Cond.1550. |
| 90 | 8 | 6 | 2.5 | 2 | 30 | C | AMPL | Mut.Cond.500.No.2.Grid. |
| 90 | 8 | 8 | 2.5 | 2 | 30 | C | AMPL | Mut.Cond.500.No.1.Grid. |
| 9001 | 1 | 9 | 6.3 | 44 | 17 | K | AMPL | Mut.Cond.1100. Shorts on 4 and 5. |
| 9002 | 2 | 9 | 6.3 | 59 | 18 | L | AMPL | Mut.Cond.1900. Shorts on 4 and 5. |
| 9003 | 1 | 9 | 6.3 | 54 | 14 | K | AMPL | Mut Cond.1500. Shorts on 4 and 5. |
| 9004 | 9 | 12 | 6.3 | 44 | 0 | M | DIODE | Good tube reads in green sector. |
| 9005 | 9 | 1 | 3 | 20 | 0 | M | DIODE | Shorts on 2, 3, 4, and 5. Good tube reads in green sector. |
| 9006 | 2 | 9 | 6.3 | 20 | 0 | L | DIODE | Shorts on 4 and 5. |
| 92 | 8 | 6 | 6.3 | 2 | 30 | C | AMPL | Mut.Cond.500.No.2.Grid. |
| 92 | 8 | 8 | 6.3 | 2 | 30 | C | AMPL | Mut.Cond.500.No.1 Grid. |
| 95 | 8 | 5 | 2.5 | 57 | 28 | C | AMPL | Mut.Cond.1750. |
| 950 | 1 | 5 | 2 | 37 | 37 | B | AMPL | Mut.Cond.950. |
| 951 | 2 | 5 | 2 | 18 | 29 | A | AMPL | Mut.Cond.640. |
| 954 | 6 | 7 | 6.3 | 44 | 17 | M | AMPL | Mut.Cond.1100. |
| 955 | 9 | 7 | 6.3 | 59 | 18 | M | AMPL | Mut.Cond.1900. See note D. |
| 956 | 6 | 7 | 6.3 | 53 | 14 | M | AMPL | Mut.Cond.1500. |
| 957 | 9 | 7 | 1.1 | 19 | 23 | M | AMPL | Mut.Cond.650. Shorts on 4 and 5. See note D. |
| 958 | 9 | 7 | 1.1 | 32 | 34 | M | AMPL | Mut.Cond.1200. Shorts on 4 and 5. See note D. |
| 958A | 9 | 7 | 1.1 | 32 | 34 | M | AMPL | Shorts on 4 and 5. |
| 959 | 6 | 7 | 1.1 | 10 | 30 | M | AMPL | Mut.Cond.600. Shorts on 4 and 5. |
| 96 | 1 | 5 | 12.6 | 40 | 0 | A | RECT. STD. | |
| 98 | 5 | 1 | 6.3 | 40 | 0 | B | RECT. STD. | Plate Number 2. |
| 98 | 7 | 7 | 6.3 | 40 | 0 | B | RECT. STD. | Plate Number 1. |
| 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