| Year | 1912 |
| Date | 08-Aug |
| Volume | 27 |
| Issue | 589 |
| Page | 126 |
| Category | Replies in Brief |
| Part | |
| Title | Spark for wireless telegraphy, study our pages also Howgrave-Graham's "Wireless Telegraphy for Amateurs", cannot design complete installations, double-cotton covered wire |
| Author | C.W.S. |
| Notes |