Vehicle (Power Socket); Vehicle (Direct); Headphones And Speakers; Listening Safely - Radio Shack 20-163 User Manual

Installation

Vehicle (Power Socket)

To power your scanner from a 12V power source in your vehicle,
such as a cigarette-lighter socket, you need a 12V, 600 mA DC
cigarette-lighter adapter (not supplied), available at your local
RadioShack store.
1. Insert the adapter's barrel plug into the scanner's DC 13.8V
jack.
2. Plug the adapter's other end into your vehicle's cigarette lighter
or power socket.
Note: When you use a cigarette-lighter adapter, you might
hear electrical noise from your engine while scanning. This
is normal. This is less of a problem if you connect directly to the
vehicle fuse box.

Vehicle (Direct)

1. Disconnect the cable from your vehicle battery's negative (–)
terminal.
2. Ground the black wire of the supplied DC power
cord to your vehicle's chassis. The grounding screw
must make complete contact with your vehicle's
metal frame.
3. Connect the red wire of the supplied DC power
cord to a voltage source that turns on and off
with the ignition switch, such as a spare accessory
terminal in your vehicle's fuse box.
4. Insert the power cord's barrel plug into the scanner's
DC 13.8V jack.
5. Reconnect the cable to your vehicle battery's
negative (–) terminal.
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Headphones and Speakers

You can plug headphones or a speaker (neither included) into your
scanner.
To use headphones, connect the plug into the headphone jack
on the front panel. Using headphones automatically mutes the
scanner's speaker.
To use an external speaker, connect the plug into the EXT SP jack
on the rear panel.

Listening Safely

Even though some earphones/headphones let you hear outside
sounds when listening at normal volume levels, they still present a
traffic hazard.
To protect your hearing, follow these 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.
• Do not wear headphones while driving. This can create a
traffic hazard and is illegal in some areas.
Installation
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