Dubuque, Iowa: The Dubuque Times-Journal, 1923. First Edition. Original Wraps. Octavo. Near Fine. Item #4049
The construction and operation of all the latest and most efficient circuits fully illustrated and described in simple language, including the neutrodyne, reinartz, armstrong kopprasch, ultra-audion, wood's, cockaday reflex, runed impedence and tuned plate and grid circuits together with instructions showing how to add. Two states of audio or two states of radio frequency to an of the above receivers. 64pp., illustrated throughout, bound in brown stiff wraps lettered in brown and blue. off-setting to title page from advertisement and telegram laid in otherwise a fine copy.