the delta 240 can be placed within about 3-4' (1 meter) of other hf dipoles and yagis, without destructive interaction. if you have a tribander, such as a c-3, c-19xr, c-31xr, or a 5-band yagi such as the incredible xr-5, the delta 240 can be placed within a few feet on the same mast.
仅仅1米就够了,哈哈,hams有福了,,,,,,,,,,,,,,