I would most definitely look to getting an antenna that has a built-in pre-amplifier like the RV BATWING or the KING JACK antenna.
We get great full screen high def HDTV signals from the NATIONAL BROADCAST system transmitted from the local towns.
We use a 120VAC 22-inch VIZIO running from a 600WATT PSW INVERTER. Having the inverter offers a whole bunch of other 120VAC items we can use camping off the power grid...
Using the truck stop 12VDC appliances was a big bust for us as they all pull alot of DC current and would melt down a cigarette lighter socket in a heart beat. The last straw was the 12VDC Coffee pot which took over 7 hours to brew a 8-cup pot of coffee... My 2KW generator 120VAC output grinds and brews a 10-cup pot of good ole fresh bean coffee in 5-minutes time and pours up into a thermos to stay hot all day long.
I have two 120VAC drops from my 600WATT PSW Inverter one located in the Home Entertainment Center area and the other near my bedroom night stand. These are always ON and supports all of so called needed emergency items including hdtv...
I can recharge my 50% depleted batteries each morning with a quick three hour generator run time using my on-board smart mode converter/charger unit.
120VAC appliances are much easier for us to accommodate in the RV World... Once you get all setup it is a no big deal camping off the power the grid - everything is second nature now... Just go camping and pull off the road anywhere you want... Good for the night... Recharge batteries back up during breakfast the next morning for three hours then you are good to do it all over again the next day/night run off the batteries.
Roy Ken
My Posts are IMHO based on my experiences - Words in CAPS does not mean I am shouting
Roy - Carolyn
RETIRED DOAF/DON/DOD/CONTR RADIO TECH (42yrs)
K9PHT (Since 1957) 146.52M
2010 F150, 5.4,3:73 Gears,SCab
2008 Starcraft 14RT EU2000i GEN
2005 Flagstaff 8528RESS