Radio Shack PRO-90 - Manual (Page 13)

13
CONNECTING AN EARPHONE/
HEADPHONES
For private listening, you can plug an earphone or head-
phones with a
1 /
8
-inch mini-plug (such as Cat. No. 33-
175 or 20-210) into the jack on top of your scanner.
This automatically disconnects the internal speaker.
Listening Safely
To protect your hearing, follow these guidelines when you
use an earphone or headphones.
• Do not listen at extremely high volume levels.
Extended high-volume listening can lead to perma-
nent hearing loss.
• Set the volume to the lowest setting before you
begin listening. After you begin listening, adjust the
volume to a comfortable level.
• Once you set the volume, do not increase it. Over
time, your ears adapt to the volume level, so a vol-
ume level that does not cause discomfort might still
damage your hearing.
Traffic Safety
Do not use an earphone/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/headphones with your scanner,
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.
20-520.fm Page 13 Wednesday, August 4, 1999 3:06 PM