-to-Ground ' Radiotalepnone System mUlfszerg.RT,ID'Receiver/Transmitter Wol(sDergCYT288.28-Volt Power Unit. 4'. .kulftoerg MT-28 Mounting Tray',: Rulftberg.ATIOIA' Jet Blade Antenna . GR0U:40 PROXIMITY WARNING SYSTEM Collins FPC-75'Ground Proximity Warning System Collins 590A.108 Bar° Alt Rate Sensor