As was introduced in the paper by Kimura et al. [1990>, interesting ELF emissions in the frequency ranges above the cyclotron frequencies of He+ and/or O+ have been detected by ELF subsystem of the EXOS-D satellite. This paper is to propose that these emissions are ion cyclotron model emissions trapped along the magnetic field lines around the magnetic equatorial plane, which are very similar phenomena detected in frequencies around the He+ cyclotron frequency, FHe+ by GEOS 1 and 2 nearly the geostationary altitude. The propagation characteristics can be confirmed by ray tracing including the effects of ions. ¿American Geophysical Union 1991