Thanks so much for all the replies. The TV does have a digital tuner. I have talked with Winegard and the antenna appears to be ok. The little meter I picked up at Home Depot only lights for OK and for SHORT. You are right, I could not see what might short with coax, but apparently the meter saw that the signal was not transmitting. I don't know where a splitter may be, but will look. The TV is a Sony and is connected to a 12 volt
inverter/converter in the nearby closet. Next to that is an elec outlet labeled that it goes to the inverter system on the trailer. I cannot get that outlet to work either, but the TV does turn on when plugged into a 110 outlet (after the inverter box in the closet). I love the Airstream, and I don't mind fiddling with these things, but perhaps it is time to read a book and just imagine what is happening in the news. Thanks for all your help. If you get any other ideas, I would love it.