Hi Lyle, Ok Lyle, one more time a too fast reading of (very well written!) K3's manual!!! Have a nice day. 73, Rudolf HB9ARI K3#1212 Lyle Johnson wrote: >> I choose USB to be able to use VOX; may be i'm wrong, but >> with DATA A, the TX activation is only possible with COM or PTT? > > VOX works in DATA A. > > 73, > > Lyle KK7P > >