Change log of the Radio Fundamental Catalogue.
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2012.04.15 rfc_2012b. Changes with respect to the previous release rfc_2012a
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  -- Added  23 V2M experiments

  -- Added   6 regular absolute astrometry and geodesy VLBA experiments RDV

  -- Added   2 KQ experiments in 2011
  
  -- Added   6 X/S VLBI observations of optically bright quasars.

  -- Corrected names of 19 sources

  In total, 444 new sources were added

2012.02.05 rfc_2012a. Changes with respect to the previous release rfc_2011d
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  -- Added  11 V2M experiments

  -- Added   3 EVN absolute astrometry experiments EC013, EC017A, EC017C

  -- Re-analysis of all VLBA geodetic experiments in 1994-1997 has been completed;
  
  -- Two experiments bb041 have been re-analyzed;

  -- Three experiments bb119 (CJ snapshot survey; 6cm, 16 MHz bandwidth) 
     have been re-analyzed;

  In total, 61 sources added

2011.10.10 rfc_2011d. Changes with respect to the previous release rfc_2011c
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  -- Reprocessed 17 rdv and pre-rdv experiments with PIMA.

  -- Added  17 V2M experiments

  -- Added   1 LCS experiment

  In total, 86 sources added

2011.06.22 rfc_2011c. Changes with respect to the previous release rfc_2011b
===============================================================================

  -- Reprocessed 4 rdv experiments with PIMA, staring from rdv10

  -- Added  6 V2M experiments

  -- Added  reanalysis of 25 VLBA BeSSeL Calibrator Survey experiments.

  In total, 244 sources added

2011.05.15. rfc_2011b. Changes with respect to the previous release rfc_2011a
===============================================================================

  -- Reprocessed 13 rdv experiments with PIMA, staring from rdv18

  -- Added  6 V2M experiments

  -- Added  reanalysis of 9 VLBA BeSSeL Calibrator Survey experiments.

  -- Added  the C-band VLBA survey of FIRST sources.

  -- Computed median correlated flux density for sources without images
     available for VCS, C-band VLBA survey of FIRST sources, VERA K-cal
     survey, VLBA Survey of optically bright objects and some others.

  In total, 307 sources added

2011.03.08. rfc_2011a. Changes with respect to the previous release 2010d_astro
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  -- Reprocessed 5 VCS1 experiments with PIMA

  -- Reprocessed rdv40-rdv45; rdv81-rdv82 experiments with PIMA

  -- Addded 12 V2M experiments

  -- Addded 2 FAPS experiments

  -- Addded 11 VIPS experiments

  -- Addded  1 LCS experiment (v271f)

  In total, 571 sources added

2010.12.27. rfc_2010d. Changes with respect to the previous release 2010c_astro
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  -- Reprocessed 6 VCS1 experiments with PIMA

  -- Reprocessed rdv33 experiment with PIMA

  -- Addded 6 V2M experiments

  -- Addded 1 FAPS experiment

  In total, 137 sources added

2010.09.13. rfc_2010c. Changes with respect to the previous release 2010b_astro
===============================================================================

  -- Included 5 C-band exeriuments : 3 VIPS and from 2 Bologna survey

  -- Addded 8 V2M experiments

  In total, 350 more sources added

2010.07.25. rfc_2010b. Changes with respect to the previous release 2010a_astro
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   -- All K-band VLBA experiments have been reprocessed with PIMA.

   -- VCS2, VCS5, VCS6 observations have been reprocessed with PIMA.

   -- Two more RDV experiments, rdv18 and rdv51 were reprocessed with PIMA.

   -- Sources with less than 3 detections were removed from the catalogue.

   -- The catalogue now contains new entries for maps and estimates of
      the correlated flux density at K-band.

   -- K-band only data are processed now in a separate run.

   -- Statistics of K-band observations were computed.

   -- New images from the K-band Galactic Plane Survey were added to the
      database.

   -- The catalogue now contains estimates of the correlated flux density
      from LBA observations.

   -- Ionosphere calibration from GPS ionosphere models was applied for
      processing single-band observations.

   -- Reweighting scheme was changed.

   -- Classification "C" (calibrator), "N" (non-calibrator) was changed.
      The previous scheme marked a source as a non-calibrator if it did not
      have X/S observations. That had sense when all the data were observed
      at X/S mode. The new scheme lifts that condition. A source is marked
      as a calibrator if it has a) 8 or used observations and b) has
      the semi-major axis of the error-ellipse less than 25 nrad.

   -- mailing list was created.