The invention relates to a method and to a device for generating sferics alternating field emissions having a minimal biotropic effect for optimised application of alternating field type radiation to humans animals and plants compared to naturally occurring environmental sferics that are weather dependent or attenuated outdoors or indoors e.g. biotropic and also technics or radiation forms originating from human technology which are unfortunately largely too intensive in particular in current times firstly in particular one or more alternating signals attributable to or based on natural atmospheric impulse discharge processes (1) in the signal propagation forms (1 2 3 4 5) thereof are post processed (6 7 8 9) with regard to interfering periodic duration/signal components of technical origin that are to be deleted and in addition individual impulses that are too intensive in signal dynamic level related terms are deleted (23 23a 23b 23c 24 24a 24b 25 25a) secondly said post processed alternating signals (10) are mixed (11) preferably with or without other selected aperiodic/periodic/impulse like alternating signal forms (12) are mixed (11) and thirdly and finally the preferably mixed ideal total alternating signal (10 11 12) is radiated or emitted (15) via alternating field transmission means (13 14 17) such that said signal is adapted in a level controlled manner.