| Year | 1919 |
| Date | 07-Aug |
| Volume | 41 |
| Issue | 954 |
| Page | 132 |
| Category | Electronic |
| Part | |
| Title | Wireless Notes and Developments |
| Author | J.Scott-Taggart |
| Notes | An American Wireless Telephone. An Oscillatory Valve Relay, Use of Triode in Motors and Alternators. A wireless telephone set used by U.S. Navy for aeroplane service. A New High-power Station in America. Another Telefunken Station. Sensitiveness of the Vacuum Valve. A Complete Book on Valves |