I am thinking of buying this to move between my Macbook and iMac. Was wondering if anyone here is in NYC and has been using it or an earlier version without connecting it to a cable box. I have a cable box but it would be nice to get some reception without having to be close to my cable box/TV. Also, to get over the air reception would I need an antenna? (Assuming I could get over the air reception in NYC - hence my question above.) I confess I find the info on their website confusing, and it cuts against the portability of the product if you really need an antenna to use it - but I can't tell. I noticed the European version (DTT) had a neat little antenna attached, but I gather that would not work here. Thanks in advance.