Have you ever wanted to be able to track other APRS users while mobile or portable?  Normally the only way to see other APRS stations is with a computer or PDA connected to a TNC and radio.  There are also a few radios with built in TNC's that allow you to read incoming packet data with the option to upload the stations to your GPS for display on the GPS map.  The problem with all of these options is the PRICE!  All of these options require fairly expensive hardware and with the exception of the few radios with TNC's, they require multiple components. 

    What if there was a cheaper and easier solution?  This is where the Anti-Tracker comes in.  What is the Anti-Tracker?  It is a small device with a built in modem chip that decodes APRS format data packets at 1200 baud and converts the position information into GPWPL NMEA sentences that can be sent to a compatible GPS receiver.  This allows you to see APRS stations displayed on your GPS map screen. 

    The Anti-Tracker is only about 2 inches x 2.5 inches and be connected to almost any receiver and costs quite a bit less than $100 to build.  The original Anti-track design and code is by Darryl Smith, VK2TDS from Australia.  For more information on the background of the Anti-Tracker please refer to his page at www.radio-active.net.au. 

    When I first found the Anti-Tracker, there was only a schematic and the code available to build my own.  I first built up a breadboard version to see how it works.  The results were just what I was looking for so I decided to try to make my own printed PCB for it.  Thanks to the help of Richard Evans, KD5ZZL and a couple of other testers I have made several revisions and improvements to my PCB design.  I  also designed the board so that  you can easily add the surface mount version of the Byonics TinyTrak.  This small TinyTrak available from Byonics.com when coupled with my Anti-Tracker board allows you to not only receive APRS packets but to also transmit your only position in an extremely small package.  The Anti-Tracker will even show your own position reports on your GPS screen when it has been heard by a Digipeater.  The SMT TinyTrak mounts to the bottom of the Anti-Tracker board via an 8 pin header or simply with 8 wires soldered to both boards.

    I have decided to offer preprinted PCB's, partial kits with everything needed to build your own except enclosure and connectors, and certain components to make building your own Anti-Tracker easier.

Anti-Tracker Kit (includes $5 "royalty" to Darryl Smith)	$70.00
Anti-Tracker PCB only (pcb version 2.3)	$15.00
Preprogrammed 16F628 PIC IC's (2 chips) (Includes $5 "royalty" to Darryl Smith)	$13.00
3mm Green LED	$0.12
3 mm Red LED	$0.12
Donations for my troubles are always appreciated	$??.??
More seperate parts may be available in the future.....