ATCA on source at start of schedule, 9:45 UT.
Using antennas CA01, CA02, CA04 and CA05. (mm receiver on CA03 being warmed for maintenance, baseline to CA06 too long.)
Array is in a 6km array configuration: not optimal for phase stability.
10:15UT do a manual phase cal: tied array amplitude immediately increases from ~11Jy to 15Jy, and stays at the higher level for the next 15 minutes (and counting…)