User's Manual

20-424 Owner’s Manual
Page 5
set to positive and its plug must fit the scanner’s DC 12V jack. Using an 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.
1. Connect the adaptaplug connector to the DC cord so the tip reads positive (+).
2. Insert the DC cord’s barrel plug into the DC 12V jack on the back of the scanner.
3. Plug the cord into the vehicle’s cigarette-lighter socket.
Notes:
• 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 AN 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.
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
29-174 MHz Extend fully
380-512 MHz Extend 2 segments
CONNECTING AN OUTDOOR ANTENNA
Instead of the supplied antenna, you can connect an outdoor base-station or mobile antenna
(neither supplied) to your scanner. Your local RadioShack store sells a variety of antennas.
Choose the one that best meets your needs.
When deciding on an outdoor antenna and its location, consider these points.