The PDA provides a means to connect a standard CW key to the front of the Elecraft KX3. The CW key shipped with the KX3, the KX3PD, connects to a 2x2 0.1” pitch header with thumbscrews. The PDA replaces the KX3PD offering a standard stereo jack for connecting your CW key.
The PDA is offered as a kit. It requires a bit of soldering to attach the header and stereo jack.