I've found that the Butel software works well for the IC-R6, but you can't add a lot of frequencies at once. Add them in small batches, and you'll be fine with that software and the cable from Ebay mentioned by others. The other irritant with the Butel software is that I find I have to tell Butel that I have paid for the software frequently, when I open the program. I'm forced to enter my license key to re-register the software, but it doesn't take long.