Be careful when working on the power supply circuits, the 115-volt ac line connections, or the 240-volt plate circuits in Receiver, Radio R-390(*)/URR. Turn off power when working on the transmitting antenna or the transmitting antenna terminals; high radio frequency voltages exist at these points. DON'T TAKE CHANCES! EXTREMELY DANGEROUS VOLTAGES EXIST IN THE FOLLOWING UNITS: TRANSMITTER, RADIO T-368(*)/URT 2,400-volt circuits CONVERTER, FREQUENCY SHIFT CV-116(*)/URR 620-volt circuits WARNING VENTILATION The shelter must be ventilated when occupied. Be sure to open the vents, window shutters, or door when the equipment is operated. Keep the shelter air intake fan closed during transportation. The truck exhaust stack is near the air intake vent and danger from carbon monoxide poisoning exists.
DesignationTM 11-5820
EditionJan 1962
StatusSuperseded
Pages62
FunctionComms Signal
CollectionHistoric
Public domain (U.S. Government work)