An analysis of unique observations of long period infrasound waves (~200 s) recorded in the ionosphere over Central Europe at record heights by continuous Doppler sounding is presented. The infrasound was generated by the Long-period surface seismic waves induced by the M8.8 Kamchatka earthquake on July 29, 2025. The time delay of the infrasound detection in the ionosphere relative to the vertical motion of the ground surface is consistent with the numerical simulation of infrasound propagation.