| Tube |
A |
B |
Filament |
L |
R |
Socket |
Press |
Notes |
|---|
| 840 | 4 |
7 | 2 | 60 |
20 | B | AMPL |
Mut.Cond.400. Connect plate cap to top contact of 7-pin socket. OK over 320. |
| 841 | 2 |
10 | 7.5 | 42 |
0 | A | AMPL |
Mut.Cond.350. Ok over 280 on 3000 scale. |
| 842 | 2 |
10 | 7.5 | 46 |
50 | A | AMPL |
Mut.Cond.1150. |
| 8425 | 1 |
9 | 6.3 | 62 |
16 | K | AMPL |
Mut.Cond.2300. |
| 8426 | 7 |
9 | 12.6 | 63 |
12 | K | AMPL |
Mut.Cond. 2300. |
| 843 | 1 |
6 | 2.5 | 56 |
10 | B | AMPL |
Mut.Cond.1625. |
| 85 | 10 |
6 | 6.3 | 0 |
0 | C | DIODE |
|
| 85 | 7 |
6 | 6.3 | 40 |
32 | C | AMPL |
Mut.Cond.975. |
| 85 | 10 |
3 | 6.3 | 0 |
0 | C | DIODE |
|
| 8532 | 8 |
4 | 6.3 | 74 |
0 | L | AMPL |
Mut.Cond.6000. Short on 3. |
| 85A | 10 |
3 | 6.3 | 0 |
0 | C | DIODE |
No.2.Diode. |
| 85A | 10 |
6 | 6.3 | 0 |
0 | C | DIODE |
No.1.Diode. |
| 85A | 7 |
6 | 6.3 | 49 |
24 | C | AMPL |
Mut.Cond.1250. Ampl. Section. |
| 864 | 2 |
10 | 1.1 | 18 |
37 | A | AMPL |
Mut.Cond.650. |
| 865 | 10 |
4 | 7.5 | 16 |
28 | A | AMPL |
Mut.Cond.625. See note A. |
| 866A/866 | 7 |
1 | 2.5 | 40 |
0 | A | RECT. STD. |
See notes A and D. |
| 866Jr. | 2 |
7 | 2.5 | 40 |
0 | A | RECT. STD. |
|
| 87 | 2 |
5 | 6.3 | 48 |
20 | ? | AMPL |
Mut.Cond.1225. |
| 871 | 7 |
1 | 2.5 | 20 |
0 | A | RECT. STD. |
See note D. |
| 874 | 4 |
5 | 0 | 30 |
0 | A | GAS No. 1 |
See note D. |
| 878 | 5 |
12 | 2.5 | 0 |
0 | A | RECT. STD. |
Connect plate cap to left hand contact of 5-pin socket. |
| 879 | 7 |
1 | 2.5 | 0 |
0 | A | RECT. STD. |
OK over 1000. See note D. |
| 88 | 2 |
5 | 6.3 | 56 |
19 | A | AMPL |
Mut.Cond.1600. |
| 884 | 1 |
6 | 6.3 | 40 |
80 | E | RECT. STD. |
Good tube strikes between 55 and 65 on R when this control is rotated counterclockwise. See note D. |
| 885 | 1 |
6 | 2.5 | 40 |
80 | B | RECT. STD. |
Good tube strikes between 55 and 65 on R when this control is rotated counterclockwise. 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. |
Home
Technical Info
