COP,| JOHNSTON ATOLL 02006A SUPPORT Page 3 MODIFICATION F -~ No-Break Power Unit A second 100 kw no-break power unit was installed in the generator room on the first floor of the JOC. This unit, which can be operated independently or in parallel with the other unit, provides 100 kw of 120/208 volt, 60 cycle, 3 phase power to the Subtask A909 Computer Area. Drawings: 91-20-M34 JS 91-20-E104 91-20-E31 MODIFICATION G@ - Laboratory Room A 10 x lé-ft. shielded enclosure was installed in the first floor TC laboratory area. This enclosure will provide an RF free environment for payload checkou This facility was formerly listed under F&S No. 01107. Drawing: 91-030-W8 MODIFICATION H l. A pressure regulating damper was installed in the duct running to the telephone room on the second floor. Drawing: 2. - Minor Modifications 91-20-M10 Room numbers were stencilled on doors. Acoustical tile was installed in various locations and a door and wall were removed. Duplex strainers were installed in the Salt waterlines. Drawings: 3, Plotting boards were provided for the TG 8.3 Operations Control Center, Room 318, onthe third floor of the JOC. Drawings: 4, None Air conditioning was installed in the Radar Penthouse. Drawings: 5. Miscellaneous JS 91-20-M102 JS 91-20-E118 A WWYV antenna was installed on the roof of the JOC. A support pole fo. the installation of a user furnished VLF antenna was provided. Ten pairs of shielded audio cable was provided from the Transmitter Shack, Build g 23, to the T&F center, Room 430, on the fourth floor of the JOC. Drawing: VOLI 91-20-W9 2-10