Ana, Madox, Yasmeen, Stefan

We went to EX and EY to remove the CNS II Timing Diagnostic System GPS clocks and measure the GPS antenna cable lengths as part of work permit 8044. This will have NO IMPACT on anything outside of timing diagnostics.

EY

• 2pm got to EX
• 2:05pm disconnected power to CNS II EX
• 2:15pm left EX to get TNC adapter (whoops)
• 2:30pm returned to EX to do TDR measurement
• It is LMR-195 cable in the end station, velocity factor 0.8. Cable name: CDS_GPS_ANT_VEA
• 2:46pm finished TDR at EX and left

EY

• 3pm arrived at EY
• 3:02pm disconnected CNS II
• EY Cable name: CDS_GPS_ANT_VEA

We suspect that the cable connects to a cable in VEA after 90 ft which goes up to the roof. The total measured length at both end stations was about 210 ft;, however, this might be wrong if the cable to the roof has a different velocity factor than the LMR-195 going from VEA to the CNS II clock. Same for EX. We will go out tomorrow to EX to look at the cable type connecting from VEA to the rooftop GPS antenna and measure its length.