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).
Approval for an earth contact in the wheel hub to prevent radio interference in cars fitted with wireless sets.
| Identifier | ExFiles\Box 63\2\ scan0307 | |
| Date | 25th May 1937 | |
| To By.{R.W. Bailey - Chief Engineer} c. to Da.{Bernard Day - Chassis Design} 6153 Rm{William Robotham - Chief Engineer}/Wst.18/JH.25.5.37. N.Sch.4903. Earth Contact in wheel hub to prevent radio INTERFERENCE. This fitment has now been tested and is approved for use on customers cars where wireless sets are fitted. The modification recommended by Rm{William Robotham - Chief Engineer}/AFM.{Anthony F. Martindale} in Rm{William Robotham - Chief Engineer}/AFM.{Anthony F. Martindale}8/AP. 21.5.37. should be incorporated for ease of fitting. Rm{William Robotham - Chief Engineer}/Wst. | ||