Questions: 1. Is this with a dummy load, or with an antenna connected? 2. Is it possible the extra noise is being generated by the power supply? Mark AD5SS On Sun, Apr 7, 2013 at 8:28 AM, Don Wilhelm <w3fpr at embarqmail.com> wrote: > Hans, > > That is definitely not normal. The K2 should operate with 11 volts or less > with no reduction in sensitivity.