Do it yourself Yaesu FT-450D Digital interface
Added a Yaesu FT-450D to the station and wanted to get it up on digital modes. So leveraging what I had learned in my earlier posting on USB Sound cards. I gathered up parts to build a cable to connect a USB sound card to the 6 pin mini din socket on the rear of the radio.
The wiring is very simple with only three wires, audio in, audio out and a ground needed. I used a couple of 3.5mm stereo plugs I had bought on eBay and wallah a dedicated digital interface for less than $30 and $20 of that was the USB Sound card dongle.
And as a I have a serial cable for normal CAT control I did not need to mess with the PTT line as I will use CAT commands to key the transmitter.
73 Until next time, Jay