On 11/16/2011 9:08 AM, W0MU Mike Fatchett wrote: > I don't know of anyway to defeat the K3's internal keying. N8LP makes a small device that does something like that. Don't know the detail of how it works, but my neighbor, N3ZZ, has one on each of his SteppIRs. There is also a TX Inhibit line on the K3 Aux connector (a DB15). 73, Jim K9YC