I have just purchased an SDRPlay (RSP1) to use with my FTdx3000 and (potentially) Win4Yaesu (still evaluating...very nice package!) I had seen previous instructions for use with the HDSDR package stating that I should use the RX out on my Yaesu. Win4Yaesu says just the opposite...use the IF out. I know just enough to be dangerous here...the HDSDR instructions gave a reason that "sounded" kosher; I just don't know. Win4Yaesu instructions gave no reason either way. When I had the HDSDR up and running with RX out being used it seemed to work well. (I admit, I have *not* tried Win4Yaesu with RX yet.) I just wanted to toss this question out there and see what kind of responses I get. Which should I use with Win4Yaesu? Why?