I have come into possession of a K2/100 with the DSP filter (KDSP2) but does not have the noise blanker (KNB2). Question: (1) Is the noise blanker a worthwhile purchase? Any thoughts would be appreciated. 73, Pete-K8PT >>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>> B. Peter Treml k8pt at chartermi.net 725 W. Magnetic St. www.qrz.com/k8pt Marquette, Mi. 49855 USA