The 'class A wifi blocker' that's what happened to me... (I love Class A's by the way) I could see the park wifi antenna and couldn't get a signal.. so I bought the JEFA Tech and a 15db antenna and mounted the antenna on the tv 'crank-up mast'.. that worked great then bought a new TT and had to make a different mounting place.. This TT has one of the 'omni directional tv antenna' and no mast.. I really am not liking the omni directional tv antenna it doesn't work as well as my 'crank-up' system.. but the wifi antenna works good in this location..I'm using an ASUS TR-AC66U router configured as a repeater now and it's doing great.. at least on my driveway... first trip will tell...