For the month or two, every time I tune to an OTA channel on the AM21 for the first time in a given day, I get the signal loss error. Almost always, my signal is fine straight to the TV. I'll reset the AM21 by unplugging the USB from my main receiver (HR22), waiting a few seconds, then plugging it back in. That will usually hold for the day, and I'll have to repeat the process the next day. I've tried resetting everything and running the setup again with no luck. I understand support for the AM21 has come to a stop, so I haven't bothered contacting DirecTV. Any ideas on what might be triggering this problem?