| Year | 1922 |
| Date | 09-Feb |
| Volume | 46 |
| Issue | 1,085 |
| Page | 156 |
| Category | Radio Engineering |
| Part | |
| Title | Some Radio Receiving Circuits for Amateurs |
| Author | Captain H. de A.Donisthorpe |
| Notes | Circuit No. 1. A simple aerial circuit, crystal detector for "spark" and telephony reception, Circuit No. 2. Same as No. 1. With addition of an aerial tuning condenser, Circuit No. 3. Aerial and closed circuit crystal for "spark" and telephony reception |