E E A . JOHNSTON ATOLL SCIENTIFIC F&SNO. TITLE 01032 Command Antennas and Pedestals (2) USER STRUCTURE/FACILITY NO. SANDIA SCIENTIFIC STATION NQ. None 91-4-16 BoD & 91-4-17 FOD FUNDING AGENCY SANDIA ($000) ENGR PROC CONST TOTAL FURN PRE-GO Cost Included in F&S No. 01030 COMPLETED DESCRIPTION Two helical-type slaved rotating antennas (completed in 1963) are available for tracking free flight rockets. These antennas are mounted on 12-ft. high steel towers atop the Command and Tracking Center (Building 660). The towers are designed so that deflection or rotation from a 30 knot wind will cause less than 0.1 degree error in tracking. The tracking rate on any axis is 20 degree per second with an acceleration of 5 degrees per second. Signal cables run from the Command and Tracking Center to each antenna. DRAWINGS: 91-3200-S2 thru S4 1-37 __——, VOLI oe