Thursday, March 15, 2018

TNC-Pi 9k Kits

At long last we are ready to start making available kits for the TNC-Pi 9k!

This TNC is a low cost 1200 / 9600 baud KISS based TNC.  It is simple to build and is software upgradeable.  The TNC was developed by John Wiseman G8BPQ and I believe Mark Griffith KDØQYN.

The TNC uses an Arduino Teensy 3.2 running Soundmodem by Thomas Sailer.  The TNC can be used standalone or be mounted to a Raspberry PI 3.  When ran standalone, the TNC is powered by the on board USB connection.  The same connection is used for communicating between the TNC and your computer.

There are two ways to connect your radio to the TNC.  The first and preferable method is through a mini 6 Pin DIN connection found on many modern dual band radios.  This connection supports both 1200 and 9600 baud communications.  The second is through a standard DB9 connection which only supports 1200 baud.

The TNC has been tested by various club members and has proven to be a reliable TNC at 1200 baud.  9600 baud has also been proven reliable, but depending on the radio will require a bit more attention.

We are selling kits for those that are interested for $45 (case additional $8).  For each TNC sold, $10 will be put towards supporting WVCARC.  In the past Jason and I have fronted all club expenses and would understandably like to move away from doing so in the future.  We feel that even with the additional $10 added to the cost of the TNC, it is still priced less than anything comparable on the market today.

If you are interested in purchasing a TNC you can sign up here:  The plan is to hold a build party at our next in person meet on April 14th.  If you have any questions please send an email to  If you would like to learn a bit more about this TNC there is a video on it here:



1 comment :

  1. I created a case for the Pi4 with the board on top.