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).
Letter regarding a sample aero battery ignition relay switch sent for radio interference testing.
| Identifier | ExFiles\Box 168a\2\ img163 | |
| Date | 20th August 1935 | |
| 6139 Hs{Lord Ernest Hives - Chair}/Wat.4/HA. 20th August, 1935. Chief Superintendent, Royal Aircraft Establishment, South Farnborough, HANTS. Aero Battery ignition relay switch. Dear Sirs, As agreed at the discussion which took place at these Works between your Messrs.Hayden and Debenham and the undersigned, we are sending to you under separate cover a sample relay switch in order that you can determine the amount of radio interference which might possibly occur due to the capacity coupling of the top contacts on this switch. It should be noted that this switch has not been adjusted in any way in respect to its operation electro-magnetically but is sufficiently representative for the purpose of your tests. Yours faithfully, FOR ROLLS-ROYCE LIMITED. | ||