On 1/17/06, Lew <ljl160 at verizon.net> wrote: > > I have on Omni 6+ . I have a DSP-9+ thst I have never hooked up on this > radio. Question-I can't remember but is there a cutoff/ muting port on > the > DSP unit when on transmit? You have to check your particular unit. My Timewave DSP599ZX does have a muting input. 73, Barry N1EU