I have the ICOM HT Cable. I would like to produce a cable the will plug into the audio jack and the serial jack into the Digirig to allow the use of RTS in the software TNC.
If you could give me the wiring of the ICOM HT Cable, I might like to experiment to produce a cable similar to the above mentioned article.
George, starting from Digirig 1.6 the PTT line controlled by RTS signal is permanently present in audio connector. There is no need to connect to serial port for that or change anything on the board. See the HT cable schematic in the product page.