I'm using a good ole DSP-59+ with one of my K2's - the one that does not have the KDSP in it. They both have benefits and shortcomings ..... or ..... I'm not about to part with either! 73 Hank K8DD Mike,W8KRR wrote: > I'm using an old DSP-59+ with my K2 with good results. I'm curious - > anybody else trying this? > Mike