I've got them everywhere 40-10 on CW and SSB on 40, 20 and 17. The K2s sound great but when I asked on of the ops, during a lull in the pileup, for his K2 SN he didn't know what I was talking about. They are operating K2s but they are perhaps not K2 operators :-) Doug W6JD K2/100 #1626