| Year | 1921 |
| Date | 25-Aug |
| Volume | 45 |
| Issue | 1,061 |
| Page | 160 |
| Category | Radio Engineering |
| Part | |
| Title | Some Notes on Aerial and Earth Systems |
| Author | Captain H. de A.Donisthorpe |
| Notes | Aerial, inverted "L" type aerial, cheap & effective insulator, earth, methods of leading-in the aerial |