(50 atm) under the strong shock and vibration of the launch. Since the nozzle is located on the top surface of the PLU and is to point towards the microwave focal point, modification of the PLU is required for correct installation of the nozzle. METS Experimental Operation The experiment should be carried out according to the operation sequence outlined below: 1. Preparatory Functional Checkout These tasks must be performed right after launch. The following are checked and run: (1) Check of the system which charges the transmitter battery. (2) Test of microwave transmission (MWT) in the low power mode, with the phases of the power amplifiers all fixed by the computer. (3) Testing of the retrodirective microwave receivers by getting waves from other satellites or from the ground.
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