2What is a TinyTrak3?TinyTrak3 is a GPS position encoder which, when connected to a GPS and a radio, will transmit its location at an adjustable rate. TinyTrak3 is a construction project providing an inexpensive way to build a mobile tracker without the need for a full TNC. It is configured by connecting to a computer's serial port, and running a simple configuration tool which allows setting of all user options.After ordering a kit or a chip, be sure to download the configuration software and documentation. Download TINYTRAK3.ZIP
3TinyTrak3 is not a TNC (Terminal Node Controller). What is TinyTrak3 NOT?TinyTrak3 is not a TNC (Terminal Node Controller).TinyTrak3 can only transmit data beacons it receives from a GPS receiver (NMEA 0183). You can not receive data or messages or transmit a 2 way packet QSO with a TinyTrak3. The connection to the radio’s audio output deliver audio energy to the PIC controller to prevent the TinyTrak3 from transmitting while another packet station is transmitting. It is not decoding the packets. It is just detecting audio energy at the speaker terminals.
4Where to get a TinyTrak3.Orders can be placed by sending a check or money order to: Byon Garrabrant Granite Mountain Lane Las Vegas, NV Web Site:TinyTrak3 Kit - $32TinyTrak3 Built and Tested - $62TinyTrak3 Case - $8TinyTrak3 Chip - $18TinyTrak3 Female To Female Gender Changer / Null Modem Kit - $4First Class Postage - $3Upgrade Shipping via Priority Mail - $3Byon accepts PayPal orders via his web site.
5Do this FirstDownload and print out the TinyTrak3 Owner’s Manual from In this WINZIP file is the Owner’s Manual in PDF format and the necessary configuration software called, “tinytrak3config.exe”. Also are the files for using the TinyTrak3 with a Palm handheld computer.
14Familiarize yourself with the Printed Circuit Board Familiarize yourself with the Printed Circuit Board. Notice the Correct position of U1, U2, Q1, the 4 LEDs and the 3 Diodes.
15Consider where and how you are going to mount your TinyTrak3 before soldering any parts. This may determine weather or not you will need to put it in a case or attach the DB9 connector to the radio end.
17Bend the leads slightly to keep the parts from falling out while soldering.
18Cut the excess lead with a flush cutter or diagonal wire cutter.
19Make sure the DIP socket is flush before soldering all 18 points Make sure the DIP socket is flush before soldering all 18 points. Begin by soldering only two diagonal opposite points first. Check to see that it is flush then solder the rest.
20Notice that the resistor bodies are inline with the circles on the PCB Notice that the resistor bodies are inline with the circles on the PCB. The other bent lead goes into the corresponding hole.
21Another view of the resistors mounted on the PCB Another view of the resistors mounted on the PCB. The 10MHz resonator can go in either direction. It has no polarity.
22To apply power to pin 4 on the GPS DB-9 connector if needed.
23To apply power to pin 4 on the GPS DB-9 connector if needed.
24Jumper 4 - Controls the LEDs (N.C.). Jumper 5 - Primary or Secondary configuration.Jumper 6 - Remote power switch.
25Finish soldering all of the remaining components to the PCB Finish soldering all of the remaining components to the PCB. Be extremely cautious while handling the PIC. Use a grounded wrist strap or touch a metal object before handling it. Take notice of the position of the notched end of the PIC.
38Inside a modified DeLorme Tripmate GPS receiver. Just add a radio.
39I bent the LED’s leads in a 90 degree fashion I bent the LED’s leads in a 90 degree fashion. Then drilled holes in alignment so the LEDs can protrude through the holes.
40This is KD5OM-2 mobile TinyTrak3 This is KD5OM-2 mobile TinyTrak3. The TT3 is in the upper left hand corner. The transceiver is a Kenwood TH21at ($20.00 find at a ham fest). What’s in the Altoids tin?
41A ten watt 2 meter amplifier A ten watt 2 meter amplifier. The Altoids tin gave excellent RF shielding. TinyTrak3s are sensitive to high RF environments.
42Here is a close-up of the TinyTrak3 inside my mobile tracker Here is a close-up of the TinyTrak3 inside my mobile tracker. Notice the jumper on J5.
43What other options are there available for the GPS receiver What other options are there available for the GPS receiver? Here is a Garmin etrex receiver that cost around $ in many stores. A data cable is also available for it that will connect directly to the TinyTrak3.
44You can receive a lot of help from the TinyTrak discussion group on Yahoo.
45Wiring the TinyTrak3 to your 2 meter radio is the same cable as the KANTRONICS KPC-3 uses.
46You can find wiring harness information at: www. packetradio You can find wiring harness information at: