 The Transit satellites used arrays of magnetic-core memory as mass data storage up to 32 kilobytes.The basic operating principle of Transit is similar to the system used by emergency locator transmitters, except that in the latter case the transmitter is on the ground and the receiver is in orbit.Each Transit system satellite broadcast two UHF carrier signals that provided precise time hacks (every two minutes), plus the satellite's six orbital elements and orbit perturbation variables.