I operated my Flex-6500 on PSK-31 over SmartLink for about 6 hours this AM in support of local scouts for the JOTA event. Two virtual audio "cables" provided RX and TX audio from/to the radio. Worked perfectly over wireless. Using a remote station made it much easier to setup for the event--one less antenna and the related frequency conflicts. Having DAX would be easier, but the virtual cables worked fine.