| Year | 1919 |
| Date | 19-Jun |
| Volume | 40 |
| Issue | 947 |
| Page | 503 |
| Category | Electronic |
| Part | |
| Title | Wireless Telephony |
| Author | |
| Notes | See page 492. A Marconi wireless telephone set inside a 'bus at Chelmsford, the message being sent by wireless telephony from London to the 'bus |