Vehicle (Direct); Headphones And Speakers; Listening Safety - Radio Shack PRO-652 User Manual

Scanner Setup

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.

Headphones and Speakers

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

Listening Safety

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, then 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.
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