# FORMAT for RECEIVERS 
#RECCOD        IGS 20-char code       | Description (comment field)
#format(1x,a6,8x,a20)                 |
#

# FORMAT for  ANTENNAS
#ANTCOD        ____FULL_NAME_______ |
#format(1x,a6,8x,a15,1x,A4)         |

# Non-blank first column indicates a comment.
#
# A non-whitespace character in column 14 indicates that a receiver or antenna
# is currently supported in GAMIT based on one of the following criteria:
# - An asterisk (*) indicates that the receiver or antenna has an IGS code (from
#   https://files.igs.org/pub/station/general/rcvr_ant.tab) and the antenna has
#   an IGS calibration (in igs20.atx and igs14.atx);
# - A plus (+) indicates that the antenna has an IGS code but only has an NGS
#   calibration (in ngs20.atx and ngs14.atx);
# - A minus (-) indicates that the receiver or antenna does not have an IGS code
#   but, in the case of an antenna, nevertheless has an NGS calibration;
# - A "K" indicates that the antenna does not have an IGS code but nevertheless
#   has a calibration from Krietemeyer et al. (2020), doi:10.3390/rs12091393;
# - An equals sign (=) indicates that the antenna has an IGS code but the
#   calibration is copied from another similar antenna.
# Non-supported receivers may be added upon request and receipt of a valid RINEX
# file and tracking characteristics (# channels and sampling time) (see
# /gamit/makex/settim.f); non-supported antennas will be added upon request and
# receipt of a mechanical description (see /gamit/lib/hisub.f) and (optional)
# phase center model. It is our intention to replace the short GAMIT codes by
# the IGS codes eventually and to add separate codes for radomes.
# Note: The 20-character RINEX code for antennas includes as of July 4, 1999, a
# designation of 15 characters for the antenna, the 16th character is blank, and
# characters 17-20 are reserved for antenna cover (radome) codes.

# The (new) flags in column 37 for receivers indicate how differential code
# biases are to be treated:
#  'P' : receiver is cross-correlating and requires correction of P2' and C1
#         Rogue SNR, Trimble 4000, etc. (mostly older receivers?;
#         diagnostic RINEX 3 observables: C1C only and C2D?)
#  'C' : receiver is non-cross-correlating but reports C1 instead of P1
#         Trimble 4700, 5700, Leica RS500, CRS1000, SR9600, etc. unless AS is
#         off (diagnostic RINEX 3 observables: C1C only and C2W/C2X(L2C)?)
#  'N' : receiver is non-cross-correlating and reports true P1, P2 (diagnostic
#         RINEX 3 observables: C1C/C1W and C2W/C2L(L2C)?)
# Blank indicates that we have not determined the correct flag and GAMIT will
# stop until this file is modified to reflect the correct description of the
# receiver.