Electronic pilot apparatus; electronic guidance apparatus for earthmoving equipment; GPS and Differential GPS-referenced guidance apparatus; Real Time Kinematic (RTK) satellite navigation-referenced equipment guidance apparatus; satellite-referenced guidance apparatus using local wireless correction signals; guidance apparatus using GSM/GPRS location correction signals; telemetry for equipment included in this class; apparatus for telemetric programming of guidance apparatus for vehicles and earthmoving equipment; telemetric tracking devices; apparatus for telemetric acquisition of maintenance data for earthmoving equipment; apparatus for voice over data network communications with vehicles and earthmoving equipment, including VoIP apparatus