A New Non-Interfering Detector

A new detector of high sensitivity is described which to the stimuli of weak impulses gives a response at least equal to a regenerator with the most critical regeneration. This high sensitivity is secured with the use of metallic ionization and a new electrode termed the "collector." Ionization of this type is readily controlled and stable and makes it possible to secure uniform characteristics on production tubes. Static characteristics are given and show some points of particular interest such as, for example, the high value of current to collector as compared with the anode current. Curves are also given showing the effect of frequency on response, indicating great possibilities in the elimination of interference. The effect of a signal is shown to always decrease the steady value of the collector and anode currents irrespective of the shape of the characteristic curve. As this detector does not oscillate thruout its sensitive range it obviously cannot radiate any energy and, therefore, interfere with broadcast reception by neighboring receivers.