User's Manual

20-466 Owner’s Manual
Page 5
RadoShack store.
Cautions:
! You must use a power cord that can carry 12V DC and at least 500 mA. Its center tip must be set to
positive and its plug must fit the scanner’s DC 12V jack. Using a cord that does not meet these
specifications could damage the scanner or the cord.
. Always connect the DC cord to the scanner before you connect it to the power source. When you finish,
disconnect the cord from the power source before you disconnect it from the scanner.
Follow these steps to power the scanner from a vehicle’s cigarette-lighter socket.
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1. Set the center chip positive (+).
2. Insert the cord’s barrel plug into the DC 12 V jack on the back of the scanner.
3. Plug the cord into the vehicle’s cigarette-lighter socket.
Notes:
. If the scanner does not operate properly when you connect a DC adapter, unplug the DC adapter from
the cigarette-lighter socket and clean the socket to remove ashes and other debris.
. If you use a 12V DC cord and your vehicle’s engine is running, you might hear electrical noise on the
scanner caused by the engine. This is normal.
. Mobile use of this scanner is unlawful or requires a permit in some areas. Check the laws in your area.
CONNECTING THE ANTENNA
Connecting the Supplied Antenna
You must install an antenna before you can operate the scanner.
The supplied telescoping antenna helps your scanner receive strong local signals. To install the antenna,
thread it clockwise into the hole on top of the scanner.
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The scanner’s sensitivity depends on its location and the antenna’s length. For the best reception of the
transmissions you want to hear, adjust the antenna’s length according to the chart below.
Frequency Antenna Length
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25-54 MHz Extend fully
108-174 MHz Extend 4 segments
216-225 MHz Extend 3 segments