OP25 also allows one to TRANSMIT ysf (and dstar and dmr).
I use the OP25 transmit support for ysf now and then to check in to a weekly 2M net that includes a Fusion repeater. The point being that it is now possible to run a digital ysf station without the need of a vendor radio. I use an Icom IC-820H with a PC/soundcard serving as the digital exciter...