Bought my HR21 from Ebay, brand new unit, all components in original packaging including access card. Activated the day I got it, no problems at all other than the Typical issues everyone is having here.RobertE said::welcome_s
Ebay & Receivers. A match made in hell.
For your sake, I hope you got the RID and verified with DirecTv that the receiver in question is actually an owned unit and that they will activate it. Or that is a new receiver unopened and never been activated. Otherwise your in for disappointment.
As far as the AM21 goes, what you will get will depend on whats available in your area and how well your antenna picks up whats available.