Disappointed in HD Radio coverage

I recently purchased an HD radio to hear the other WMUB channels. What a disappointment. The antenna situation appears to be so critical to reception that I get intermittent signals, and as I walk around the room, it changes from good reception to miserable reception. At a minimum, it seems to me that WMUB should inform its listeners about this quirk of HD radio, and advise them to purchase a better antenna than comes with the radio. NPR does acknowledge this widespread problem. I don't have the antenna yet, but hope it will correct the problem..

--Gene Willeke, Oxford

[Program Director John Hingsbergen: “We have mentioned this a few times in our Free Advice shows about consumer electronics. We have also had this information on our website for some time:… WMUB's HD Radio signal, including The Jazz Channel does not reach every listener who can hear our old-fashioned analog signal. Digital signals are either there or not there....with no static or fade. In certain areas you may need access to an outside antenna. We encourage you to try a "demo" in the electronics store where you buy your radio."]