Dish Network DuoDVR ViP 722_TOC - Manual (Page 57)

Connections and Setup
111
Connecting an Over-the-Air Antenna
Note: The type of antenna required depends on the channels used by, and the locations
of, the local broadcasters for your area. Visit www.antennaweb.org or contact a
professional installer to help you select a suitable antenna.
Make sure to follow the antenna installation instructions correctly. Ground an
outdoor antenna per the National Electrical Code (NEC) and any local
electrical codes.
The audio/video quality on local over-the-air channels depends on the
distance and terrain between the broadcast station and your home, and on
the placement and quality of the over-the-air TV antenna you use. If you have
questions about over-the-air channels, contact the broadcaster, not DISH
Network.