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 from Erie Resistor Limited regarding suppressors for eliminating car radio ignition interference.
| Identifier | ExFiles\Box 168b\1\ img139 | |
| Date | 30th December 1938 | |
| Handwritten: RC{R. Childs}, Radio 6153, By Erie Resistor Limited. MANUFACTURERS HIGH RESISTANCE PRODUCTS DIRECTORS A.{Mr Adams} A.{Mr Adams} DYSON L. F.{Mr Friese} CRANE (BRIT.) G.{Mr Griffiths - Chief Accountant / Mr Gnapp} P. FRYLING (U.S.A.) G.{Mr Griffiths - Chief Accountant / Mr Gnapp} R.{Sir Henry Royce} FRYLING (U.S.A.) W. H.{Arthur M. Hanbury - Head Complaints} FRYLING (U.S.A.) CABLE ADDRESS: 'RESISTOR-LONDON' Carlisle Road, The Hyde, LONDON N.W.9. TELEGRAMS: 'RESISTOR, PHONE, LONDON' TELEPHONES: COLINDALE 8011 (8 LINES) CONTRACTORS TO HIS MAJESTY'S GOVERNMENT FACTORIES: ERIE, PENNA, U.S.A. TORONTO, CANADA LONDON, ENGLAND CFR/RH.{R. Hollingworth} 30th December, 1938. Messrs. Rolls Royce Ltd., Derby. Attention of the Chief Engineer. Dear Sirs, For some years we have manufactured a complete range of suppressors for the purpose of eliminating ignition interference on car radio. From the early days of car radio this interference proved to be one of the major obstacles of efficient reception, but the problem was peculiar to the car owner and ignition interference did not affect the owner of the ordinary wireless receiver. Today, with the advent of television, every owner of a televisor suffers, and the problem is the more acute because unlike the owner of the car radio, he is powerless to eliminate it. The only remedy is in the hands of the motor manufacturer - new cars must be fitted with suppressors as a standard feature. It is because we realise this, and because we believe that motor manufacturers in general are prepared to consider fitting suppressors in this manner, that we take this opportunity of drawing our products to your attention. A resistance in series with each high tension cable at the spark plugs and distributor and the use of by-pass condensers on the generator has been proved over a number of years, as the best method of eliminating interference. The general construction of suppressors is still essentially the same - Continued....... | ||