DISH Network 138410 用户手册

10. Select the 

option to leave the

 Local Channel Setup

 menu.

11. Select 

 and choose one of the following:

•

 - Select this option to display local channels (if 

in your DISH Network subscription) at their broadcast channel number.

•

 - Select this option to display local analog 

channels at their broadcast channel number.

: If you select 

, any local channels in your 

subscription will be displayed in the four-digit channel range.

: Digital off-air channels always display at their broadcast channel 

numbers.

For information on channel numbers, you can visit the National Association of 

Broadcasters (NAB) web page at www.nab.org. On this web page, go to 

www.nab.org/Newsroom/Issues/digitaltv/DTVstations.asp for a listing of digital 

broadcast stations and their Transmit Channel numbers. You can also contact 

your local broadcasters.

: The NAB web page uses the term RF Channel for what this user’s guide 

calls the Transmit Channel number.
Another good source of local channel information is available from the 

Consumer Electronics Association (CEA) web page at: www.antennaweb.org. 

This website provides recommendations for antenna types and pointing 

directions. 

Off-air TV signals are broadcast from stations on the ground, while satellite TV 

signals are broadcast from satellites in space. You receive off-air TV signals 

using an indoor or outdoor antenna instead of the satellite dish. You are likely 

familiar with analog off-air TV signals - these are the signals that have been 

used to broadcast TV for many years. New digital off-air TV signals are 

broadcast and received in the same way. Digital off-air TV broadcasting uses 

advanced technology like that of the DISH Network to deliver superb picture 

quality and CD quality sound. However, digital off-air signal reception (like 

analog off-air signal reception) depends on several things:

• The distance between the broadcast station and your home (the farther 

away the station, the weaker the signal).

• 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: