38
•
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 hearing.
Traffic Safety
Do not wear an earphone or headphones while operating a motor
vehicle or riding a bicycle. This can create a traffic hazard and is
illegal in some areas.
Even though some earphones and headphones are designed to
let you hear some outside sounds when listening at normal vol-
ume levels, they still present a traffic hazard.
CONNECTING AN EXTENSION SPEAKER
In a noisy area, an extension speaker (such as Cat. No. 21-549)
or an amplified speaker (such as Cat. No. 21-541), positioned in
the right place, might provide more comfortable listening. Plug the
speaker cable’s
1
/
8
-inch mini-plug into your scanner’s
jack.
20-561.fm Page 38 Wednesday, August 4, 1999 3:48 PM