Now that I have my HR24, it's been great !
Been using  OTA antenna for 10 years now with NO Trouble.
Now that I have this AM21 that I have to use,  the signal is not nearly as reliable as the HR20's were.
I was HOPING to NOT have to turn on  the locals  from D* as  you don't get as many  and I would like to use the OTA  particularly when the weather is bad.
I know they are  included in the package  now, but essentially your still paying an addl.  $ 5 p/m.
Anyone had issue with the AM21, it seems  like it has a much weaker signal  to it, even when the  meter says 100 most of the time.
Btw, the signal never drops on the TV Tuner.