That cannot be done - RS-232 must have only one set of line drivers on a signal line. A Y cable only works if one device has only receivers to listen in on the data traffic. 73, Don W3FPR On 6/5/2012 4:39 PM, Keith Heimbold wrote: > Sorry to piggyback on this but is there anyway to split COM ports so you can utilize the K3 utility and the LP Bridge? > >