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 responding to a query about installing wireless sets in cars, recommending a Philco model and discussing antenna setup.
| Identifier | ExFiles\Box 63\3\ scan0051 | |
| Date | 11th July 1934 | |
| S/W. Wst.....from PN.{Mr Northey} 86153 PN.{Mr Northey}1/WT11.7.34. Dictated over telephone. Ref. Hs{Lord Ernest Hives - Chair}/Wst.6/MA. Dear Mr. West, In reply to your note of the 11th instant regarding wireless on cars. I have made a certain amount of tests experimentally of such things, and at the moment I do not know anything better than the latest set put on the market by the Philco Co. It is cheap and very well designed and made for the purpose. It does not employ a convertor for the H.T. but has an extremely silent and well designed "vibrator". An essential in such instruments on the car is that the valve circuits include A.V.C. (automatic volume control). This has the effect, as probably you are aware, of reducing the interference and other volumes of sound at a time when the carrier wave by a signalling station is being received. Another very important point is the antenna. The usual scheme such as is provided by Humber cars as standard is practically useless except on local stations, and it becomes necessary to fit as mechanically as possible underneath and along the running board each side of the car two panels of copper gauze which can be connected together, and to the set to form an aerial. These notes may be of some use to you. I hope you are well, Sincerely yours, P. Neve [Signature] | ||