SAT  igs14_1958.xyz  https://sideshow.jpl.nasa.gov/pub/gipsy_files/gipsy_params/antenna_cals_xmit/igs14_1958.xyz.gz
GRN  igs14_1958.atx  https://sideshow.jpl.nasa.gov/pub/gipsy_files/gipsy_params/antenna_cals_xmit/igs14_1958.atx.gz
PCM  igs14_1958.pcm  https://sideshow.jpl.nasa.gov/pub/gipsy_files/gipsy_params/antenna_cals_xmit/igs14_1958.pcm.gz
