Log for changes to directory /home/doc/gbt/subsys/rxcommon/tcal/ Note: Files are identified below using first line of file (string following @(#) token), which is identifier generated by SCCS, and should be unique. It is possible to recover archived files from these identifiers using SCCS commands. 10/18/2001 R. Norrod Generated @(#)tcalrcvr1_2.fit 1.1 10/18/01 by editing @(#)tcalrcvr1_2.txt 1.6 08/13/01 file. Process described below: I have generated a "cleaned" version of the L-band receiver tcal file, found at /home/doc/gbt/subsys/rxcommon/tcal/tcalrcvr1_2.fit. To generate this file, I used my best judgement to remove outliers in the tlow and thigh cal data. Most of these fell in the 1.54 and 1.68 GHz regions (GPS and weather balloons probably caused measurement problems). Then, the aips++ spline interpolation function interpolate1d() was used to fill in gaps. So, the four data tables (xlinear, ylinear, xl circular, and yr circular) in the .fit file are uniformally spaced at 4 MHz intervals without gaps in frequency. The glish routines used are in ~rnorrod/Gbt/Glish/TcalFilter/tcalFilter.g, and readme.txt in the same directory describes the cleaning steps. 10/18/2001 R. Norrod Generated @(#)tcalrcvrpf_1_450.fit 1.1 10/18/01 by editing @(#)tcalrcvrpf_1_450.txt 1.2 07/26/01 file using similar process. Outliers were near band edges; extrapolated from nearby points. 10/23/2001 R. Norrod Generated @(#)tcalrcvr2_3.fit 1.1 10/23/01 by editing @(#)tcalrcvr2_3.txt 1.4 09/20/01 file. Most outliers were near 2.15 and 2.35 GHz, and near band edges. Used spline fit to regrid to uniform frequency sampling. 10/24/2001 R. Norrod Generated @(#)tcalrcvr8_10.fit 1.1 10/24/01 by editing @(#)tcalrcvr8_10.txt 1.5 09/06/01 file. Editing consisted of removing questionable data at 7.70 and 10.40 GHz. 10/24/2001 R. Norrod Generated @(#)tcalrcvrpf_1_3425.fit 1.2 10/24/01 by editing @(#)tcalrcvrpf_1_3425.txt 1.6 07/26/01 file. "Smoothed" large excursions of LowCal and HiCal data @ 0.27 and 0.39-0.42 GHz. 2/20/2002 R. Norrod Generated @(#)tcalrcvr1_2.txt 1.8 02/21/02 for data measured week of Feb 11, 2002. Generated excised version @(#)tcalrcvr1_2.fit 1.3 02/21/02. 2/21/2002 R. Norrod Generated @(#)tcalrcvrpf_1_3425.txt 1.8 02/21/02, @(#)tcalrcvrpf_1_450.txt 1.4 02/21/02, and @(#)tcalrcvrpf_1_600.txt 1.7 02/21/02 from measurements week of Feb 11, 2002.