| Year | 1920 |
| Date | 29-Jul |
| Volume | 43 |
| Issue | 1,005 |
| Page | 91 |
| Category | Electronic |
| Part | 7 |
| Title | Wireless Notes |
| Author | A.V.Ballhatchet |
| Notes | Some Tuner Circuits. Simple tuned circuit, loose coupling, "stand-by", alternative detectors, using large inductances to work over a long range of wavelengths, switch for inserting inductances, replies in Brief |