How to Fit Radio

Northern Advocate, 14 January 1939, Page 6

How to Fit Radio

Although car radio is increasing in popularity' little is known by the average car owner about the correct routine of installation necessary to prevent troubles arising, and to ensure satisfactory reception. Experience has

proved that there are certain fundamentals that call for attention when equipping a car with radio.

For instance, the polarity and volt' age of the electrical system of the vehicle are important. A 6-volt set used on a 12-volt line involves the insertion of resistance to reduce set current to normal. Wattage consumption is thereby increased with current wastage in resistance .to heat dissipation. Improvised aerials are not satisfactory. The roof antenna or under the chassis type ensure the best reception,

The best position for the wireless set is against the engine bulkhead on the passenger side, and placed as far forward as space allows. Particular care needs to be taken to make sure the earth points are soundly connected to the chassis.

The fitting of noise suppressors at various points is also essential to ensure freedom from interference arising from direct radiation from surrounding fields, and line transmission of ripple or wave disturbance. When a separate speaker is used, it is necessary to make sure the leads are full' - screened and earthed, and that the speaker case is also earthed.

It is reported that John Cobb, the British racing enthusiast, who put up such an epic achievement when lie recently lifted Captain Geo. Eyston's world speed record from 345.49 m.p.h. to 350.2 m.p.h.. was about £5,000 out of pocket, notwithstanding the strong financial backing he had towards the cost of designing and building his turtle-backed Railton-Dunlop outfit. There are few racing motorists, umassociated with the motor industry, •who would be prepared to foot the bill for such a sporting gesture, but Cobb loves the racing game, and in being the first man in the world to achieve 350 m.p.h, on land, would no doubt consider that the money was well spent in view of the satisfaction and “kick” he - got out of his speed venture on the salt bed at Bonneville (Utah).