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).
Instructions for fitting aerials to an underslung chassis.
| Identifier | ExFiles\Box 168b\1\ img265 | |
| Date | 21th May 1940 guessed | |
| -3- Fitting of aerials. If the following instructions are carefully adhered to [redacted] they will greatly facilitate the fitting. The first type that will be dealt with is the underslung chassis type. The layout of this aerial will be clearly seen from the diagram (7y1) & consists of [redacted] heavy rubber covered flexible wire. 1.) The wire is threaded through the small insulatory block (A.{Mr Adams} Fig 2) doubled back on itself & secured with a small clip. To the other end of this block is attached a light spring which in turn is sec'd onto the chassis by means of a small bracket (B. Fig. 1). This bracket should be kept as low as possible leaving reasonable ground clearance. 2.) The next spring is anchored onto the rear car spring (C) with the insulated block attached to its other end, the wire is then [redacted] passed through the other end of this insulator & drawn taught a joint is then made in a similar manner [redacted] to that previously stated by means of a small clip (7y3). 3.) A similar connection is made at D & the aerial is terminated at E in a like manner. 4.) To either of these ends attach the screened leadin wire making sure that the metal braiding is securely earthed to the chassis at this [redacted] connection. 5.) Do not use more screened cable than is necessary bearing in mind that the more screening used the greater will be the loss of the received signal. 6.) In the installing of this aerial & [redacted] with all other types always remember that their efficiency depends upon their distance from earth (the metal work of the car). 7.) It is always better to extend the aerial well towards the back of the car & thus away from the engine where it is liable to pick up electrical interference. | ||