File Downloads

To download a specific file below, right-click the appropriate link, then: If using Internet Explorer, select "Save Target As..."; If using Netscape, select "Save Link As..."

GeoCalc.xls is available as a zip file. This Excel 2002 spreadsheet performs seven different geocentric calculations using data supplied by the user through direct entry or local lookup. GeoCalc.xls can also lookup data in the companion Microsoft Access database file available below. This is GeoCalc.xls version 2004.01.31a. You'll also want to download the help file listed below.
GeoCalc Help is available as a zip file. The zip file contains 27 files that provide help for GeoCalc.xls through a series of HTML documents. After downloading the file, unzip it to the location of your choice. The first time the Excel workbook tries to access these help files, the user will be asked to browse to the files' location. This is GeoCalc Help version 2004.01.31.
AIS Import_NAS.mdb is available as a zip file. This Microsoft Access 2000 database utility will convert NFDC's FIX, ILS and NAV text files to a *.mdb that can be read by GeoCalc. This utility requires advanced knowledge of Access and includes instructions.