MOTOR-CAR AERIAL

Radio Record, Volume I, Issue 30, 10 February 1928, Page 3

MOTOR-CAR AERIAL

EASY TO INSTAL. A condenser-aerial-is one of the best types of pick-up devices to use with a radio set in a motor-car. The idea of the condenser-aerial is old, and it is ‘surprising that it is not more used by the experimenter who wants an aerial that will give a maximum of signal strength with a minimum of size. The condenser-aerial, as its name suggests, is formed of two plates of metal ‘suspended several feet apart, with the upper one well insulated. The lower plate is used for the ‘earth, and the upper one for the aerial. ‘This aerial may be modified for use ‘in a car by fastening the upper plate just inside the top of the car, and using the body of the car for the lower plate. ' The upper plate may be of almost any kind of metal. The larger this upper plate the better will be the results. Medium-mesh copper or brass screening, or a piece of thin sheet copper or brass will make the most efiicient and best looking aerial, Yiven ordinary tinfoil or lead foil may be used by fastening a large sheét of it to the top of the car and sewing a piece of cloth over it to keep it from getting torn. An insulated wire should be soldered to the metal plate and brought down to the aerial binding post on the set, taking care that the plate and the lead to it do not touch any of the metal parts of the car body. The ground binding post should he connected to the metal body of _ the car, or to the grounded terminal of the storage battery.