Thanks to Morris, WB4NZS, PSK-31 made an appearance at Field Day this year. Morris brought his workstation and monitor and homebrew interface box to connect the rig to the soundcard in his computer to send and receive the digital signals.
Above is Morris at the setup, with the Kenwood at the left of the workstation. Reda Caudill, KF4GQR, made many contacts in the afternoon and evening, using her favorite mode. As you can see, the whole operation can be done with just the mouse, once everything is hooked up and started. The monitor screen shows two text boxes at the top - one for receiving and one for sending.
Below these is a spectrum screen showing a portion of the band around the tuned frequency about 3 khz. wide, depending on the bandpass. Signals show up as vertical lines on the screen, and you just click the mouse pointer on one to start receiving that signal. What's amazing about the mode is its low power requirements, and the fact that it will receive and decode signals that you can barely hear. The DSP power of the software and the sound card interface do all the work.
Morris and Reda said they learned a lot more about the software during the long field day operation. They learned how to used the preloaded buffers in the software to send the field day CQ, answer a station by capturing its call, and answer by automatically append the club call, and put the exchange info in so the whole qso could be done with a mouse click, not even using the keyboard. The software also will keep a log of stations worked!
At the right of the computer, under the coffee cup, is the homebrew interface for the mode. Morris and Reda also work Slow Scan TV and RTTY using the interface and software generation of signals. As you might guess from the keyer to the left, someone sneaked in and made a few CW contacts when they caught Morris looking for another cup of coffee!!