Posted on: 28th December 2012
On the internet there are manu links with information. N5PZR got some good information.
To make your own Serial cable you can follow this diagram.
If you want to use D-rats you need to make your own serial cable for the E-880, E92D or 2820.
For D-Rats on the Icom E-880 use the 2,5 mm stereo phone plug diagram the same as for the 2820. Note that there are 2 diagrams, one for connecting a GPS
and one for data-communication. The difference is that pin 2 and 3 on the DB9 connector is “crossed”. As you can see on the PDF file from N5PZR Between the DB9 connector and your PC you can use a USB-Serial cable.