| Year | 1930 |
| Date | 23-Jan |
| Volume | 62 |
| Issue | 1,498 |
| Page | 85 |
| Category | Electronic |
| Part | 3 |
| Title | The Selectivity of Wireless Receivers |
| Author | W.Greenwood |
| Notes | Effect of the Detector Characteristics. Typical characteristic curve, illustrating almost complete rectification, an ideal detector characteristic curve, large and small unmodulated carrier applied to a detector |