Radio Shack PRO-89 - Manual (Page 14)

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• Do not listen at extremely high volume 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 volume level that
does not cause discomfort might still damage your hear-
ing.
Traffic Safety
• 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 transmission. Even though some earphones or
headphones let you hear some outside sounds when lis-
tening at normal volume levels, they still can present a traf-
fic hazard.
CONNECTING AN EXTENSION SPEAKER
In a noisy area, an amplified extension speaker (available at
your local RadioShack store) might provide more comfortable
listening. Plug the speaker cable’s
1 /
8
-inch (3.5-mm) plug into
your scanner’s jack.
Note: Connecting an external speaker disconnects the scan-
ner’s internal speaker.