I was wondering 2 things:

While on hf i have a current balun, thyre pretty common to help elmin
any bad signals on my coax shield

is their such a thing for uhf/vhf?? if so who specifically sells them



second

I have a arrow 2/440 j pole works great---- it dosn't have any radials
hanging off naturally, so since basically just the center conductor is
connected would you suspect my coax shield is 'part of the antenna'
radiating alot of stuff??

(course the shield does attach to the bottom mounting plate of the
antenna but i wasn't counting that



tnx