Can mounting brackets affect Yagi radiation patterns?
I’m currently constructing monobanders for 6m, 2m and 70cms on a 6 meter mast using Barenco off-set rotator platforms on T and K brackets.
Today, I noticed that the 70cm is supposed to mount (to a mast) at the rear, after the reflector. However, I’m mounting the 2m and 70cm antennas half-way down their respective booms on a fibre-glass 50cm (2 inch) mast. I notice though that doing this might mean a kink in the radiation pattern of the 70cm yago in particular because the mounting hardware is quite hefty in comparison with the actual wavelength.
How big a problem will this be I wonder? I’ve gone to all the trouble of spending £30 on a fibre-glass mast only to have the U clamps fail me? Some research required me thinks.
