| Year | 1920 |
| Date | 30-Sep |
| Volume | 43 |
| Issue | 1,014 |
| Page | 270 |
| Category | Electronic |
| Part | |
| Title | A long-wave Tuner and C.W. Receiver and Amplifier |
| Author | |
| Notes | The tuner, the C.W. receiver and amplifier, partly-finished condenser, amplifier, valve circuit, secondary of tuner or receiver, condenser spindle |