Hi All, I am being plagued by what sounds like an arc welder on 40 m. I have no NB or dsp in my K2, so it is rather a pain in the neck. Being an intermittent random broadband noise, how would the noise blankers in the K2 and K3 cope. The noise peaks at S4 to 5 with the pre amp off, mode CW and 700 Hz filter on the K2. Tim gm4lmh