Dish Network Duo ViP 222 - Manual (Page 110)

Chapter 11
102
Connecting an Over-the-Air Antenna
• The broadcast station's power (the lower the power, the weaker the signal);
• Obstacles between the station and your home, such as mountains, buildings, trees, or other
objects (these may block or reflect the signal before it reaches you);
• Multiple broadcast stations (to receive good signals from several stations, you may need to
compromise in how you aim the antenna or you may need more than one antenna).
The effects of poor digital reception are different from the effects of poor analog reception:
• Poor analog reception usually causes the TV picture to be “snowy” or to include “ghosts,” that
is, multiple images caused by receiving reflected signals along with the direct signal from a
station.
• Poor digital reception may cause the TV picture to be “pixelized,” that is, broken up into small
squares of various colors, or to be lost completely (the TV screen is all black or all blue).
• Digital broadcasts often provide either a very good picture or no picture at all.
• You may be able to receive a poor analog signal but not be able to receive a digital signal at
all.
To get the best possible digital signal reception, make sure you use the best over-the-air antenna
for where you live:
• You can receive a limited number of channels using a rabbit ears type antenna on top of the
TV set, or a much larger number via a large UHF/VHF indoor/outdoor antenna.
• The higher the quality of the antenna you use, the greater its range and the better its reception
will be.
Digital OTA Broadcasts are Still Developing
• Broadcasters may still be testing digital signals and their strength, and may stop broadcasting
without notice, vary power output, or turn it off.
• Some broadcasters do not yet have permanent transmitter tower.
• Broadcasters may choose to multicast, which allows them to provide multiple standard-
definition channels in the same bandwidth used to provide a high-definition channel.
• These factors are outside of DISH Network's control.
Additional Installation Considerations
• Follow local and National Electric Code requirements for grounding the antenna.
• RG-6 coaxial cable is preferred for the A NTENNA I N line. If you are diplexing the A NTENNA I N
and S ATELLITE I N cables, RG-6 coaxial cable must be used.
• You can not use a diplexer to combine the A NTENNA I N and S ATELLITE I N cables if using an
amplified antenna.
• If you are using a diplexer to combine the TV 2 CH 21-69 O UT of the receiver, and the
A NTENNA I N , you must use a Super Home Node to prevent accidentally broadcasting the TV2
OUTPUT from the antenna. See page 49 for more information.