Here is my set up in my RV that I will try explain. Regular over-air roof mounted ant. Booster/switch station for 2 tv's and vcr. DVD player. 2 old analog tv's that weigh a ton (front/back). 2 brand new LCD tv's with digital tuners. 2 converter boxes still in boxes. One Direct TV receiver box from my house with out a dish so far. Cable jack hook up on outside of RV. Old tv's out and front new tv hooked up to original cable thing that was attached to old tv. Cranked up ant. and switched power box to ant. mode. Got local stations on normal channels for this area. Don't know what method these stations broadcast as of today. If I am out in a place that does not have cable will the new tv's need a converter box to pick up ant. only signal? How will introducing the Direct tv part of the equation change the use of ant. only? I am in over my head and am in need of advice. Not that the kid at Walmart wasn't a help... just don't really know if what he said was factual. My main question is about the new tv's needing a converter box(s) to run straight off outside ant.