| Tube |
A |
B |
Filament |
L |
R |
Socket |
Press |
Notes |
|---|
| 117M7 | 5 |
8 | 117 | 40 |
0 | E | RECT. STD. |
See note D. |
| 117M7 | 2 |
8 | 117 | 73 |
28 | E | AMPL |
Mut.Cond.6000. Shorts on 1, 4, and 5. |
| 117N7 | 4 |
3 | 117 | 40 |
0 | E | 117N7 AND RECTIFIER |
Shorts on 2 and 3. See note D. |
| 117N7 | 8 |
10 | 117 | 74 |
25 | E | AMPL |
Mut.Cond.7000. |
| 117P7 | 4 |
3 | 117 | 40 |
0 | E | 117N7 AND RECTIFIER |
Shorts on 2 and 3. See note D. |
| 117P7 | 8 |
10 | 117 | 70 |
25 | E | AMPL |
Mut.Cond.4000. |
| 117Z3 | 2 |
6 | 117 | 41 |
0 | L | RECT. STD. |
See note D. |
| 117Z4 | 10 |
2 | 117 | 40 |
0 | E | RECT. STD. |
See note D. |
| 117Z6 | 10 |
2 | 117 | 75 |
0 | E | GAS No. 1 |
Early tubes show shorts on 1 and 3; late tubes show shorts on 3. See note D. |
| 117Z6 | 2 |
7 | 117 | 75 |
0 | E | GAS No. 1 |
See note D. |
| 1201 | 12 |
4 | 6.3 | 67 |
0 | N | AMPL |
Shorts on 1, 2, and 5. |
| 1203 / 1203A | 9 |
5 | 6.3 | 25 |
0 | F | DIODE |
|
| 1204 | 3 |
9 | 6.3 | 58 |
0 | N | AMPL |
Shorts on 4 and 5. |
| 1221 | 1 |
7 | 6.3 | 49 |
17 | C | AMPL |
Mut.Cond.1225. |
| 1231 | 5 |
4 | 6.3 | 71 |
10 | F | AMPL |
Mut.Cond.4000. |
| 1232 | 5 |
4 | 6.3 | 60 |
15 | F | AMPL |
Mut.Cond.2000. |
| 1237 | 6 |
6 | 2.5 | 32 |
0 | ? | DIODE |
Plate No.1. Shorts on 1, 2, 3, 4, and 5. |
| 1237 | 1 |
6 | 2.5 | 32 |
0 | ? | DIODE |
Plate No.1. Shorts on 1, 2, 3, 4, and 5. |
| 1273 | 6 |
2 | 6.3 | 63 |
9 | F | AMPL |
Mut.Cond.2275. |
| 1274 | 2 |
9 | 6.3 | 35 |
0 | E | RECT. STD. |
See note D. |
| 1274 | 10 |
2 | 6.3 | 35 |
0 | E | RECT. STD. |
See note D. |
| 1280 | 6 |
2 | 12.6 | 63 |
9 | F | AMPL |
Mut.Cond.2275. |
| 1282 | 6 |
2 | 6.3 | 67 |
9 | F | AMPL |
Mut.Cond.3000. Shorts on 1, 4, and 5. |
| 1284 | 6 |
2 | 12.6 | 60 |
23 | F | AMPL |
Mut.Cond.2000. |
| 1285 | 8 |
5 | 25 | 72 |
31 | F | AMPL |
Mut.Cond.5800. |
| 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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