What is and how useful is a CEA-909 "smart antenna"?
I noticed my HDTV converter box has a port for a smart antenna. I have done some poking around the internet and found the port is for a CEA-909 antenna.
Cost?
Useful?
Do you use it in conjunction with a digital antenna?
Are all CEA-909s outdoor ones?
Other advice, tidbits, etc?
Thanks!
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