I am now up and running transmit-wise on WSPR and it is fantastic. My ham call is WB9MII . I am looking for that kind of cable as I am now transmitting with a pair of cheap headphones plugged into the computers output jack....and the 703's mic held snugly to 1 earpiece of the headphones with electrical tape. Jury rig Jury rig hi hi...but I am amazed at how well the jury rig works. A cable like I mentioned above would be better but I can't seem to find one. If there is such a one..hopefully the good folks here can tell me where to order it from . Thanks 73 Greg WB9MII