I am using rigblaster+ with the dx4win psk software. I am having trouble in the Audio/Vox setup in the transmit mode. I receive fine and I can receive my psk transmit audio as well. The problem is that I cannot get my Kenwood 570d to go into the ptt mode. I was successful using the serial cable, but I would like to keep that port for other things. Any ideas? 73, Peter WB2OQQ