RCA announced these way back at CES, and it's now finally rolled out its new line of portable "hybrid" televisions, which are able to receive both Mobile DTV and standard digital TV signals. Those include in two different 3.5-inch models that run $119 and $159 (the latter includes an FM tuner and lithium ion battery back instead of AAs), as well as a 7-inch model that will set you back $179 -- somewhat curiously, those prices are all $10 higher than those originally announced. Those looking