Clone cable for Icom M710 radio

The cloning is done by the software supplied by Icom called ex1726. This is a program written for MS-DOS. Works on Windows 7 without any problems. However, it needs a true serial port - i.e. no USB-RS232 converters. I tried with different makes but did not succeed.

I made the cable for the radio and the schematic is as above. I used a separate power supply for the MAX232 to reduce the component count. It may be cumbersome as there will be lot of cables running around, but I could live with it as, cloning is not something you do daily.