| Year | 1949 |
| Date | 03-Mar |
| Volume | 100 |
| Issue | 2,493 |
| Page | 260 |
| Category | Electrical |
| Part | |
| Title | Modification of Electric Repeater motors |
| Author | F.R.Lucas |
| Notes | Construction, modification, diagram showing connections from master control switch to repeater motor, field windings, the rotor, armature core |