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Tracker3 Model OT3m
5+ $89.00

The Tracker3 replaces the Tracker2 as our top-of-the-line APRS tracker and TNC.

For complete product description, documentation, and support information, see the Tracker3 product page.

The Tracker3 acts as a bidirectional tracker (transmitting positions and plotting received stations as waypoints), digipeater, and KISS TNC.

Major features include:

  • Intelligent APRS tracker with SmartBeaconing™ support and automatic beacon rate control
  • Waypoint output to GPS including symbols, comment text, and altitude information for remote stations
  • Advanced APRS digipeater features
  • Timeslotting for reliability in high-traffic situations
  • Remote configuration and diagnostics
  • Weather station support
  • Free firmware updates for enhancements and bug fixes
  • KISS support for use with PC-based APRS programs
  • Build-in temperature and voltage sensors for remote monitoring
  • Integrated 7-amp solid state relay for remote control and radio power save functions
  • 4 analog (0-20v) and 1 digital (5v) input for telemetry
  • Heavy-duty steel enclosure
  • USB support

Support is provided through the Tracker2 group at


The OT3m is provided with no cables. What cables you need will depend on your intended application.

Radio Cables

We stock cables to connect the Tracker3 to many common radio types. See the Tracker to Radio Cables category for a listing. Additional pre-built cables are available from RPC Electronics.

Cable compatibility guide

Garmin nüvi, StreetPilot, and zumo

The nüvi 300, 310, 350, and 360, StreetPilot c340, 2720, 2820, 7200 and 7500, and zumo 550 products require the Garmin 010-10813-00 cable available here. Specify the 9-pin female connector option.

The nuvi 700 series, 7x5 series, 800 series, 5000 series, 600 series, and StreetPilot c500 series require the Garmin 010-10865-00 cable available here. Again, specify the 9-pin female connector option.

The GTRANS translator cable is not required for the Tracker3, and will prevent some features from working properly.

PC Connection

To connect the OT3m to a PC for initial setup or for use with PC-based mapping programs, you'll need a standard USB cable or a null modem cable if you prefer to use a serial port.

Available Options:
Current Reviews: 10
This product was added to our catalog on Friday 24 February, 2012.
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Tracker3 Model OT3m
Received this TNC after the original mod board for my Alinco ..
5 of 5 Stars!

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