Turning The Radio On And Off; Frequency Band And Network Selection; Frequency Band Selection - Sierra Wireless AirCard 881 Installation Manual

Rev 2 Feb.11

Turning the radio on and off

This option allows you to conserve your computer's battery by
turning off the AirCard modem's radio transmitter/receiver
when you are not using it.
To turn off the radio:
Tools > Turn Radio Off
1. Select
When the radio is turned off, the menu option switches to
and the message "Radio is off" is displayed in the 3G
Radio On
Watcher window.
To turn on the radio:
Tools > Turn Radio On
1. Select
Frequency band and network
selection
3G Watcher has two options that affect your ability to obtain
GPRS, EDGE, UMTS, or HSDPA/HSUPA service:
• The frequency band you want to use.
• The network you want to use, if you are within the
coverage area of more than one network.

Frequency band selection

Every GSM network operates on one set of frequency bands.
(See"Frequency band selection" on page 37). The AirCard
modem is designed to change frequency bands automatically
to obtain network service. You can also change frequency
bands manually from the
Tools > Options > Network
window (
Note: Unless your service provider specifies otherwise, it is recom-
mended that you use the Automatic setting.
3G Watcher Basics
.
.
tab of the User Options
Network
).
Turn
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