I employ the marvellous control designed into the K3 to deal with such problems: the ON/OFF switch!
Seriously, I use a full-wave loop working against a Beverage in diversity mode which knocks the crashes down considerably. RF cranked back a bit, CW filter set around 400 hz, DSP off. The QRN doesn't disappear but it becomes more tolerable. Bill, VE3NH _______________________________________________ UR RST IS ... ... ..9 QSB QSB - hw? BK