Biquad for two meters and 440-MHZ by KE4UYP This is a vertically polarized Broadside and Collinear Array each Loop is a vertically polarized Broadside Array both the right and the left side of the Loop is a bent 1/2 wave dipole working 180 degrees out of phase with the other one and that gives you 4.15dbi of gain. http://ke4uyp.tripod.com/By_Q.html