At the youtube-channel of Jochen Kirchhoff many basic assumptions of the radial field hypothesis are discussed in one form or another, some examples are given below. It is also recommended to use the corresponding Lectureswhich are set in simple audio format, are noted.

Core (zone) radiation and primordial radial field fed therefrom as a cause of gravitation
including quotations from "Baustoff der Welt" by H.F.Krause, criticism of the concept of mass
e.g. for the radial field concept in relation to the phenomenon of light generation
On the movement of the cosmic bodies and the criticism of the previous theory of movement