Headphones And Speakers; Listening Safely; Understanding Your Scanner - Radio Shack RPO-137 User Manual

Headphones and Speakers

For private listening, you can plug headphones
(not included) into the headphone jack on top
of your scanner. This automatically disconnects
the internal speaker. Note that the sound is not
stereo.

Listening Safely

To protect your hearing, follow these earphone or
headphones guidelines:
• Do not listen at extremely high volume
levels. Extended high-volume listening can
lead to permanent hearing loss.
• Set the volume to the lowest setting before
listening. Turn on the scanner, and adjust the
volume to a comfortable level.
• After 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.
• Even though some earphones/headphones
let you hear some outside sounds when
listening at normal volume levels, they still
can present a traffic hazard.

Understanding Your Scanner

We use a few simple terms in this manual to
explain the features of the scanner. Familiarize
yourself with these terms and the scanner's
features, and you can put the scanner to work for
you right away.
The scanner scans conventional frequencies and
racing. A frequency, expressed in kHz or MHz,
is the tuning location of a station. To find active
frequencies, use the search function.
Besides searching within a selected frequency
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