| Longitude | Latitude | AHD height | |
| (degs/dms) | (degs/dms) | (above sea level) | |
| W196 | 149.5489798 |  30.3144576 |
209.30m |
| 149 32 56.327 | 30 18 52.048 |
||
| MOPRA | 149.0984643 | 31.2693808 |
837.94m |
| 149 05 54.472 | 31 16 09.771 |
||
| PARKES | 148.2623007 | 32.9999629 |
391.52m |
| 148 15 44.283 | 32 59 59.866 |
Notes: The figures are derived from geocentric Cartesian coordinates using the Higgins (1987) seven-parameter transformation of WGS84 to AGD84. The latter is a coordinate system specific to Australia, using a non-geocentric spheroidal fit to the local geoid (the ANS, or Australian National Spheroid). The AHD height is height above mean sea-level or (equivalently) height above the geoid. For Narrabri, the AHD is that quoted in the surveyors' report (AT/15.6.1/003, AT/15.6.2/012). For Parkes and Mopra, values of N[WGS84] (height of the geoid above the WGS84 spheroid) are were interpolated on AUSGEOID93 (from OSU91).
Latitudes and longitudes read from Australian topographic maps are invariably in the above system or a precursor (eg AGD66). Some GPS receivers also allow positional data to be displayed in this system.