Grasshopper
You need digital cable. All analog signals will be canceled out soon.

RAMESAN THAMPI P S
You can opt the Powerful Telescopic antenna available in the market like automobile use it is very powerful type.

speedolover
try centenna.com it use coaxial cable

hyghwayman
My home made antenna works better than any store bought antennas I ever tried and cost me less than $5.oo to build. This is my story; Before you buy a antenna for your new HDTV or converter box, try hooking up your old analog TV antenna. If your digital signal is weak and you have a lot of drop outs. You may want to build your own antenna like I did. I have tried all sorts of commercial store bought antennas and must say my home made antenna beats the pants off of all of them. Go to my MSN blog to get all the info you'll need to build your own antenna. hyghwayman