Radio Shack 20-422 Manual De Usuario

8

You can connect an optional external
speaker with a 

1

/

8

-inch (3.5-mm) plug to

the scanner. Use an 8-ohm external
speaker that can handle at least 2.5
watts of power. Your local RadioShack
store sells scanner accessories, includ-
ing external speakers.

Insert the speaker’s plug into the 

 jack on the back of the scanner.

Note: Plugging in an external speaker
disconnects the scanner’s internal
speaker.

You can connect an optional earphone
or pair of monaural headphones with a 

1

/

8

-

inch (3.5-mm) plug to the scanner. Your
local RadioShack store sells a complete
line of earphones and headphones.

Insert the earphone’s or headphones’
plug into the 

 jack on the back of

the scanner.

Note: Plugging in an earphone or head-
phones disconnects the scanner’s inter-
nal speaker.

To protect your hearing, follow these
guidelines when you use an earphone/
headphones.

• Set the volume to the lowest setting

before you begin listening. After you
begin listening, adjust the volume to
a comfortable level.

• Do not listen at extremely high vol-

ume levels. Extended high-volume
listening can lead to permanent
hearing loss.

• Once you set the volume, do not

increase it. Over time, your ears
adapt to the volume level, so a vol-
ume level that does not cause dis-
comfort might still damage your
hearing. 

20-422.fm  Page 8  Friday, January 7, 2000  12:54 PM