Preparation
14
• Set the volume to zero before 
putting on the headphones. 
With the headphones on, 
adjust the volume to a 
comfortable level.
• Avoid increasing the volume 
once you set it. Over time, 
your sensitivity to a volume 
level decreases, so volume 
levels that do not cause 
discomfort might damage 
your hearing.
• Avoid or limit listening at high 
volume levels. Prolonged 
exposure to high volume 
levels can cause permanent 
hearing loss.
6TCHHKE"5CHGV[
Wearing headphones while 
operating a motor vehicle or riding 
a bicycle can create a traffic 
hazard and could be illegal in 
some areas.
Even though some headphones 
let you hear some outside sounds 
when listening at normal volume 
levels, they still can present a 
traffic hazard. Exercise extreme 
caution!
%100'%6+0)"#0"
':6'05+10"52'#-'4
In a noisy area, an amplified 
speaker (not supplied), available 
at your local RadioShack store, 
might provide more comfortable 
listening. Plug the speaker cable's 
1
/
8
-inch (3.5 mm) mini-plug into 
your scanner's    jack. 
±
±
"016'"
±
"
You must use an 
amplified speaker 
with this scanner. 
Non-amplified 
speakers do not 
provide sufficient 
volume for 
comfortable listening.
20-525NEW.fm  Page 14  Monday, July 1, 2002  2:58 PM