Hi Lou, I have been using hearing aids for ten years or more. I have never had a problem with radio, HF or VHF. I have done very little with UHF, but what little I have done, there was no trouble. I have used three or four different brands and models. So, I can say, with some confidence, that your sister should have a comfortable time with her new aid. 73, Gale [log in to unmask] --- [This E-mail scanned for viruses by Oasis Online] Now available Nationwide call 1-888-547-6277 for information.