There's noting wrong with the 301 this isn't a problem for all add-on HD units. It's an add-on rather than built in, and therefore you have to find a place for it. The unit decodes HD Radio signals for compatible receivers. I've used it for six months and haven't had a single problem. Of course, there aren't many HD Radio signals to receive around here, anymore. There used to be five, I think. Now I only pick up one on an average day.

All our stations broadcast in hd, and this wont stay locked in. Even when sitting in the stations parking lot.

I am not overall happy with this product but time will tell. I do not have many HD stations in my area. The only reason I bought this unit is because I wanted the song title etc., to display on my dash since my Calrion CX501 do not have RDS built in.