I would recommend two brands...Radio Shack
. I don't know who makes the Radio Shack radio but they all seem to be OK and there are Radio Shacks everywhere so you can put your hands on one before you buy and get service (swap out) anywhere you happen to be. The other brand I would look for is Midland. Either the WR100 or WR300.
I would avoid Oregon Scientific
for a little while while they get their recall
straightened out. http://www2.oregonscientific.com/recall_front.asp
I would look for 2 features in a SAME equipped Weather Radio for the RV:
Get one with an external antenna jack
. The WX frequencies fall in the VHF TV band, between channels 4 and 5, (not sure, but in there somewhere) so your roof mounted TV antenna system will pick up the signals and all you need then is a splitter. Be careful not to allow DC voltage in to the WX radio antenna port. This DC power is in your RV system to power antenna amplifiers.
The other feature is a 12 vdc powered radio
that requires an AC "wall-wart" power supply. Then you make an adapter cable to run off the RV 12 vdc system.
Some folks think I'm a bit weather paraniod. Not at all. In fact, I don't worry much about the weather because I have my SAME WX receivers to do the worrying for me.