| Year | 1915 |
| Date | 25-Mar |
| Volume | 32 |
| Issue | 726 |
| Page | 237 |
| Category | Electronic |
| Part | |
| Title | Conditions Affecting the Variations in Strength of Wireless Signals |
| Author | Professor E.W.Marchant |
| Notes | A.E.Kennelly. Proceedings of the Institute of Radio Engineers. Observations of signal strength, Paris sunset test, special signals emitted from Paris, comparison between variation in signal strength at sunset at Nancy & Liverpool, curve showing variation in antenna current received for 10.45 a.m. & 5 p.m. on various dates, curve showing variations in signal strength with day of month, Brussels 24-hour test, all-night test of 12 hrs, Paris test, appendices, buzzer & detector circuit |