Preparation
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You must use an amplified speaker with this scanner. Non- amplified speakers do not provide sufficient volume for comfortable listening.
•Once you set the volume, do not increase it. Over time, your ears adapt to the volume level, so a volume level that does not cause discomfort might still damage your hearing.
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Do not use an earphone or headphones with your scanner when operating a motor vehicle or riding a bicycle in or near traffic. Doing so can create a traffic hazard and could be illegal in some areas.
If you use an earphone or headphones with your scanner while riding a bicycle, be very careful. Do not listen to a continuous broadcast. Even though some earphones/ headphones let you hear some outside sounds when listening at normal volume levels, they still can present a traffic hazard.
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In a noisy area, an amplified extension 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) 
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You can use the belt clip attached to the back of the scanner for
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