| Year | 1957 |
| Date | 20-Jun |
| Volume | 116 |
| Issue | 2,926 |
| Page | 877 |
| Category | Electronic |
| Part | |
| Title | Simplified Radio Control |
| Author | R.H.Curwen |
| Notes | Adding extra controls with the minimum of equipment. Relay modifications, slugged relays, system of control, coil winding revolution counter, circuit arrangements, pulser unit |