Ground-controlled  approach  (GCA)  radars,  2-15 AN/FPN-63 PAR, 2-18 I Interfaces,  2-3 AN/GPN-27, 2-14 AN/SPA-25G, 2-20 AN/SPN-46(V),  2-16 AN/SPS-40B/C/D/E, 2-11 AN/SPS-49(V),  2-9 AN/SPS-55, 2-7 AN/SPS-67(V)1,  2-3 AN/SPS-67(V)3,  2-3 SB-4229/SP  switchboard,  2-22 Interrogator  section,  3-4 antenna pedestal group, AN/UPA-57, 3-5 code  changer  key,  TSEC/KIK-18,  3-5 computer,  KIR-1A/TSEC,  3-5 control monitor, 3-5 defruiter,  3-5 interrogator  set,  AN/UPX-23,  3-4 pulse  generator,  3-4 switch and driver, AN/UPA-61, 3-5 video  decoder,  AN/UPA-590,  3-5 M Maintenance,  2-3 AN/FPN-63, 2-18 AN/GPN-27, 2-14 AN/SPA-25G, 2-22 AN/SPN-46(V),  2-16 AN/SPS-40B/C/D/E, 2-11 AN/SPS-49(V),  2-9 AN/SPS-55, 2-7 AN/SPS-67(V),  2-3 CV-3989/SP,  2-22 Maintenance—Continued SB-4229/SP,  2-22 AN/SPS-64(V)9,  2-6 N Naval Tactical Data System (NTDS), 3-10 Combat  Systems  Technical  Operations  Manual (CSTOM),  3-11 R Radar  detecting  methods,  1-3 continuous  wave,  1-3 frequency  modulation,  1-3 pulse modulation, 1-4 Radar  indicators  (repeaters),  2-19 A scope, 2-19 AN/SPA-25G  indicator  group,  2-19 planned position indicator (PPI), 2-19 range-height indicator (RHI), 2-23 Radar performance, 1-4 atmospheric  conditions,  1-4 bearing resolution, 1-4 ducting, 1-4 radar  accuracy,  1-4 range  resolution,  1-4 Radar  reference  coordinate  system,  1-1 azimuth,  1-2 elevation angle, 1-2 horizontal  plane,  1-1 line of sight, 1-1 true north, 1-1 true bearing, 1-2 vertical plane, 1-1 Radar safety, 4-1 cathode-ray  tubes  (CRT’S),  4-4 energized  equipment,  4-3 man-aloft, 4-4 INDEX-2