chapter  7
5 Cospas–Sarsat satellites
Pages 2

There are two Cospas-Sarsat systems. One

operates at 121.5 MHz (VHF) whilst the other

operates at 406 MHz (UHF). The Cospas-Sarsat

121.5 MHz system uses low earth orbit (LEO)

polar-orbiting satellites together with associated

ground receiving stations. The basic system is

shown in Figure 7.7.