Jim Lux wrote:
Before one starts going on about whether you get any gain from two
antennas 1/8 wave apart or whatever, look at whether it has any
practical benefit in terms of, for instance, filling in nulls.

The theory is that for mobile CB, one wants radiated energy
distributed up and down the highway, not to the sides.
--
73, Cecil http://www.w5dxp.com