Registration of radiation decimeter range. Hartmann network strips on the color film

The basic registration opportunity of weak VHF radiation of a decimeter range (λ = 3 and 21cm) on a color film of high sensitivity is shown. Radiation with 3 cm wave length is registered from a standard VHF generator at the 6 -10 mW power and the exposition of 6 hours. It is supposed that the possible registration mechanism of radiation is absorption energy of high-frequency radiation at characteristic frequency of relaxation for the water molecules which take place both in emulsion and in gelatine of a film