From the Rolls-Royce experimental archive: a quarter of a million communications from Rolls-Royce, 1906 to 1960's. Documents from the Sir Henry Royce Memorial Foundation (SHRMF).
Ignition interference with car radios and potential solutions using sparking plug suppressors.
| Identifier | ExFiles\Box 63\3\ scan0322 | |
| Date | 12th April 1935 | |
| To Br.{T. E. Bellringer - Repair Manager} From Hs{Lord Ernest Hives - Chair}/Wst. Re. Ignition Trouble with Car Radio Sets. Replying to your Br.{T. E. Bellringer - Repair Manager}/M9/A.11.4.35. We have not been able to arrive at any solution to the difficulty experienced with wireless suppressors on sparking plugs but we are making arrangements with the suppressor people to test out a number of sparking plug suppressors of lower resistance. If the resistance is too low obviously interference comes up on the radio, but we are hoping there will be a compromise in the value of this resistance which will just permit sufficient sparking energy to keep the plugs clean without interfering with the radio. Hs{Lord Ernest Hives - Chair}/Wst. | ||