I finally caught this one! I was checking 1710 for the presumed Argentina station, and noticed I was hearing something other than Hudson County. I assumed it was the Flight 93 Memorial Station in Bedford PA, which I have heard before (including the day before in fact), but nope, it was Springfield. Fortunately Skipmuck had sent me a short recording of the station, so I knew what to listen for. It was in for a few minutes before Hudson County re-appeared with their usual strong signal. Ironically they (Hudson County ) are repeating a short message saying they are having technical problems, with no useful content.