W3ULS wrote: > 1 Inrad # 703c 400 Hz CW filter in 3d IF of main receiver (cascaded with > stock 500 Hz CW filter in 2d IF) I'm using this same setup for CW now, the skirts are nice and steep on the 703c and it sounds great. I plan on putting the same one in the subRX too eventually. 73, Blake N4GI