PurposeUSED TO LIFT SPECIFIC SATCOM TOP-MOUNTED HIGH-GAIN ANTENNAS DURING INSTALLATION AND MAINTENANCE. J23001-1/-12 CAN ONLY LIFT CMC ELECTRONICS PART NUMBER 100-602066-001 ANTENNA. J23001-26 CAN LIFT CMC ELECTRONICS PART NUMBERS 100-602066-001, 100-602198-001,Airplane747, 757, 767, 777-200, 777-200ER, 777-200LR, 777-300, 777-300ERUsage CodeMAINTENANCE