No problems at all have been encountered by me using WSPR, Digipan and MMTTY programs in conjunction with a West Mountain Radio Rigblaster Advantage interface box connected to an Icom 781 transceiver, but I would like to use the Flex 1500 with these programs as well.
In particular my greatest interest is to get the Flex 1500 working with the WSPR program. I am presently attempting to get my Flex 1500 running with WSPR as well as Digipan along with potentially several other third party programs.