A simple command line tool to convert a wpt file to a gpx file. It reads wpt from stdin and writes gpx to stdout.
wpt
$FormatGEO
AAT054 N 36 16 36.42 E 140 08 43.50 540 ASIO HG TO
ACT052 N 36 16 10.11 E 140 08 28.70 524 COO TO
...
gpx
<gpx xmlns="http://www.topografix.com/GPX/1/0" version="1.0">
<wpt lat="36.276783" lon="140.145417">
<ele>540.0</ele>
<name>AAT054 ASIO HG TO</name>
</wpt>
<wpt lat="36.269475" lon="140.141306">
<ele>524.0</ele>
<name>ACT052 COO TO</name>
</wpt>
...
</gpx>