2017 June

Jun 09

12:35 UT Good news! The 27-m receiver is back. When installed, it seemed to have a problem still with the Hi H polarization (0 drain current), but this morning the drain current is back... Mark says he will try replacing the Bias board today, but in the meantime, I am taking data on 2136+006, with pcal_hi-all.fsq, with the 200 MHz correlator. I hope to be able to set the delays as soon as the first data are available (the first scan started 12:34 UT). Note that I also updated the FEM and DCM attenuation settings this morning, so everything should be more or less operational.

13:15 UT The delays were very bad! But I was able to find relatively good settings, and have updated the delays and restarted the scan. I restarted it at 13:13 UT, but then aborted, increased the time on source by another hour, and restarted at 13:15 UT. So the actual useful scan will start at 13:15 UT and go until 14:34 UT. I hope there are no flares that we'll miss in that extra hour...there is a little flare going on right now, but too early for us anyway.