Tube | Type | Fil. | Plate | Top | Bottom | Comment |
1R5 | 1 | 1.4 | 26 | BCDF | AE | |
1 | 1.4 | 85 | BCF | AE | ||
1S5 | 1 | 1.4 | 31 | DEF | CG | 1AH5 |
1 | 1.4 | 53 | C | G | ||
1T4 | 1 | 1.4 | 26 | BCF | AE | 1AF4 |
3S4 | 2 | 1.4 | 30 | BCDF | AG | 3A4 |
6A8 | 2 | 6.3 | 34 | EF | GH | 6D8 |
2 | 6.3 | 42 | CDK | GH | ||
6C5 | 2 | 6.3 | 28 | CE | GH | 6J5 |
6F5 | 1 | 6.3 | 24 | DK | GH | |
6F6 | 3 | 6.3 | 30 | CDE | AGH | 6V6 |
6K7 | 2 | 6.3 | 28 | CDEK | GH | 6W7/6D6 |
6L5 | 2 | 6.3 | 28 | CE | GH | 6C5 |
6P5 | 2 | 6.3 | 28 | CE | GH | 6J5 |
6S7 | 2 | 6.3 | 27 | CDEK | GH | 6K7 |
6SA7 | 2 | 6.3 | 38 | ACH | FG | 12SY7 |
2 | 6.3 | 26 | DE | FG | ||
6SG7 | 2 | 6.3 | 23 | DFH | CEG | 6AB7 |
6SK7 | 3 | 6.3 | 28 | DFH | CEG | 6SJ7/7A7 |
6SS7 | 3 | 6.3 | 28 | DFH | CEG | 6SK7 |
12BA7 | 3 | 12.6 | 18 | AB | CEFGJ | 6BA7 |
1 | 12.6 | 36 | AFGJ | BCE | ||
12SA7 | 2 | 12.6 | 38 | ACH | FG | 12SY7 |
2 | 12.6 | 26 | DE | FG | ||
12SG7 | 2 | 12.6 | 23 | DFH | CEG | 6AB7 |
12SJ7 | 2 | 12.6 | 27 | DFH | CEG | 6SJ7 |
12SK7 | 3 | 12.6 | 28 | DFH | CEG | 6SJ7/7A7 |
12SQ7 | 1 | 12.6 | 20 | BF | CG | 6SQ7 |
1 | 12.6 | 40 | D | CG | ||
1 | 12.6 | 40 | E | CG | ||
35B5 | 3 | 32 | 24 | AEFG | BC | 35C5 |
35Y4 | 3 | 32 | 20 | B | GH | 35W4 |
35Z5 | 3 | 32 | 20 | E | BCH | 40Z5 |
50A5 | 3 | 50 | 21 | BCF | GH | 50L6 |
50B5 | 3 | 50 | 22 | AEFG | BC | 50C5 |
UBL21 | 3 | 50 | 21 | BCD | EFGH | |
2 | 50 | 42 | E | BCDFGH | ||
2 | 50 | 42 | F | BCDEGH | ||
UCH21 | 2 | 19.6 | 28 | BEFG | CDHK | Connect grid cap lead to center tab of tube socket |
2 | 19.6 | 28 | CD | BEFGHK | ||
UY1N | 3 | 50 | 20 | C | EGH | Test developed on used tube |
WD-11 | 2 | 1.4 | 45 | BC | D | Insert adapter with locating pin at top |
Note: When the Comment column refers to a tube, it usually means that the tester settings are based in some way on Heathkit's setting for that tube.