Why, I don't know; but my DX4win 8.05 / Win95 is not keying the radio. I can hear it being keyed in the computer. Where is the link broken? One thing I have never seen is that.now. DX4win is not keeping the interface setting (LPT-1) I have chosen as it , without fail, has always done prior. Any ideas/remedies? 73 de Mike, K5UO