The GST-1 GPS Sentence Translator
© 2000-2003 by: Dan Welch - W6DFW and Byon Garrabrant - N6BG
The GST-1 (GPS Sentence Translator) is a small,
microcontroller based serial device designed to translate
Rockwell Binary format, as used in the original DeLorme Earthmate (shown to the left)
and Sony SkyMap serial GPS receivers, to
NMEA-0183 version 2.0 sentences.
The GST-1 can not be used with PCMCIA card GPS receivers.
The NMEA output allows the Earthmate GPS to be used with
other software mapping programs as well as Amateur Radio
Terminal Node Controllers, (TNC's), commonly used for APRS
Note: If you are using a Palm device you will need an external power cable
for the Earthmate which will also power the GST-1.
Note: The GST-1 is not compatible with the newer Delorme Earthmate (show to the right).
This new Earthmate is USB based, and already supports the NMEA-0183 format.
Important: GST-1 using USB Adapters - Read before ordering! Click Here
Sorry, GST-1s are out of stock.
For general questions, see the
GST-1 FAQ page
GST-1 Troubleshooting FAQ page.
Note: Windows 2000 users should read the troubleshooting FAQ
Details for using the GST-1 with THD-7A, PalmPilot III or
PacComm Hardware Single Port switch can be found at the
GST-1 TH-D7A FAQ page
You can upgrade your older GST-1 (sold before June, 2002) to be compatible
with Windows 2K and Windows-XP for
$20.00 including shipping via U.S. Mail.
for more info.
For technical information,
questions, or comments, please send eMail to:
* Earthmate is a trademark of DeLorme.
SkyMap is a trademark of the Sony Corporation.
GST-1 is not connected in any manner to DeLorme.
APRS is a registered trademark of Bob Bruninga, WB4APR.
Windows is a registered trademark of Microsoft Corp.