2017 May

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May 02

23:52 UT Kjell got Ant 5 back in the field, with the notch filters installed. When the 3C84 calibration occurred, I found the Ant 5 delays needed adjustment, so I did that, although it will not appear in the data until the solar day ends. The adjustment was only 0.5 ns. Some others were tweaked by 0.1 ns as well. In order to evaluate the new Ant 5 FEM, I need to first measure and set the DCM attenuations in the < 2.5 GHz bands, so that as we tune to those bands we do not saturate the ADCs. My first attempt to do that failed for some reason, but I will attempt it again this evening.