OpenTracker 1 Series

Discontinued Product

This product has been discontinued. Information is provided for reference only.

The original OpenTracker was discontinued when the Freescale MC908KX8 microcontroller ceased production. The current OTWINCFG utility still functions with the OT1 and allows configuration and firmware updates.

Support Forum

OpenTracker group on Yahoo Groups

Firmware Files

Using the 'web' button from the OTWINCFG utility is the preferred way to load firmware files, but direct links are provided here to allow downloading for use offline.

• ot1.s19 OpenTracker1 firmware (OT1, OT1x, OT1m) - March 30 2008
• ot1-300.s19 OpenTracker1 300 baud firmware - May 29 2006
• ot1-psk31.s19 OpenTracker1 PSK31 firmware - May 29 2006
• ot1-dallaswx.s19 OT1 Dallas 1-wire weather station support - April 12, 2008

OpenTracker 1

OpenTracker 1 Revision History

All circuit boards have the revision number printed on the board, usually in the lower right corner. The OpenTracker optionally came in a translucent case, with several color choices, and was the only series to use a colored case.

• Revision 1: Only 20–25 units produced, no voltage measurement capability.
• Revision 2: Three variations marked "Rev 2", with trace differences. Green PCB.
• Revision 3: Added TTL-level carrier detect input, improved PCB layout. Black PCB.
• Revision 4: Used 2N7000 FETs instead of 2N3904. Larger voltage regulator with 5V GPS power. Red PCB.

Manuals and Schematics

• Manual Revision 3 (PDF)
• Manual Revision 4 (PDF)
• Schematic Revisions 2 and 3
• Schematic Revision 4

OpenTracker 1x (OT1x)

The OT1x was the second OpenTracker variant produced. It featured a longer circuit board to fit the PacTec CNS-0101 case. The case is opaque with a hole for the LED. It was replaced by the OpenTracker+ due to discontinued parts.

OT1x Revision History

Three revisions were made, with revision numbers on the boards. Revisions were mechanical or part substitutions.

Improvements over OT1: - Larger voltage regulator - Jumper-selected output voltage - Jumper-selectable PTT and audio level - 1-Wire data bus accessible via serial connector

Manuals and Schematics

• Manual (PDF)
• Manual (German, PDF)
• Assembly Notes (German, PDF)
• Schematic Revision 3

OpenTracker 1m (OT1m)

The OT1m was the third hardware variant. It added: - 2.1mm power jack - RJ-11 for 1-wire devices - Optional 9A/20A high-side switch to control radio power

It was designed for a custom metal case.

Manuals and Schematics

• Schematic
• Release Notes

Refer to OpenTracker manual above for usage instructions.