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17
The Basics
listening safely
To protect your hearing, follow these guidelines when you
use an earphone or headphones.
• Set the volume to zero before putting on 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.
traffi c safety
Do not wear an earphone or headphones while you drive a
vehicle or ride a bicycle. This can create a traffi c hazard and
can be illegal in some areas. Even though some earphones
and headphones let you hear some outside sounds when you
listen at normal levels, they still can present a traffi c hazard.
connecting an extension speaker
In a noisy area, an amplifi ed 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.