I guess what I mean by portable is this--can you take it in the house and put an ear jack into it so you can listen thru ear buds?
The Roady can be used portable but it needs a power supply. There are other units that have built in power but we're talking 2 or 3 hundred dollars. Delphi makes a piece that the Roady slips into that has rechargables built in. The built in antenna doesn't work that well- don't expect to get a signal unless you're in the open without the external plugged in. One thing that is cool is the built in fm transmitter. I take mine camping and plug the cigarette lighter into one of those 12v jump start boxes. Can tune it in on a boombox or car radio up to 30 ft. or so.