Tendency of Modern Receivers

Radio Record, Volume II, Issue 30, 8 February 1929, Page 32

Tendency of Modern Receivers

N unmistakable tendency in receiver manufacture in all parts of the world is a steady increase in the number of valves used. This wus strikingly emphasised at the recent New York Wireless Exhibition, where it was found that the average num-y ber of valves in the receivers . was seven. More than anything els the perfection of methods of operating receivers entirely, from the electric light mains have contributed to this development, which will probably be found to be very beneficial. When receivers were operated from batteries the conservation of current was necessary to avoid too frequent charging .of batteries. Economy in the number of valves used was, therefore, encouraged. Since the modern receiver is operated entirely from the light mains, economy in current is no longer necessary, and no limit is placed on the number of valves employed. Improved manufacturing methods hare made possible the production of a six-valve set for less than was recently charged for. a three-valve set. A wide market is therefore assured for the larger receivers. It cannot be overlooked that | of the distortion in receivers in the past has resulted from the overloading of valves in an effort to effect ecvonomy. Besides being extremely sensitive, the larger receivers now being used will therefore give far better reproduction than the smaller ones which they appear to be replacing.