PRO-2034 (200-0411) Preparation Faxback Doc. # 6469 CONNECTING POWER Caution: Use only the supplied AC adapter. Using a different adapter can damage the scanner and could present a safety hazard. 1. Insert the supplied AC adapter's barrel plug into the AC10V jack on the back of the scanner. 2. Plug the other end of the AC adapter into a standard AC outlet. The memory backup circuit begins to function 1 to 2 minutes after you plug in the scanner. During a power loss, the memory backup circuit protects the channels you stored in memory for up to three days. CONNECTING THE ANTENNA The supplied telescoping antenna helps the scanner receive strong local signals. To install the antenna, screw it clockwise into the hole on the scanner's top. Adjust the length of the telescoping antenna for the best reception. The scanner's sensitivity depends on the antenna's length and various environmental conditions. Generally, for the best overall reception of most transmissions, you should extend the telescoping antenna to its full length. However, reception of transmissions in the 406-512 MHz bands is sometimes improved if you do not extend the antenna fully. Connecting an Optional Antenna Instead of the supplied antenna, you can connect an outdoor base antenna to the scanner. The local Radio Shack store sells a variety of antennas. Each type has benefits, and you should choose the one that best meets your needs. When deciding on an outdoor base antenna and its location, also consider the following: The location of the antenna should be as high as possible. The antenna and antenna cable should be as far as possible from sources of electrical noise (appliances, other radios, etc). The antenna should be vertical for best performance. Once you choose an antenna, follow the mounting instructions that come with it. Then route the antenna cable to the scanner. Connect the cable to the ANT jack on the back of the scanner. Caution: Do not run the cable over sharp edges or moving objects. Use coaxial cable to connect an optional antenna. Always use 50-ohm coaxial cable, such as RG-58 or RG-8. For lengths over 50 feet, use RG8 low-loss dielectric coaxial cable. If the coaxial cable's connector will not fit in the ANT jack, you may also need a scanner antenna plug adapter (Cat. No. 278-208). NOTE: The local Radio Shack store carries a wide variety of coaxial antenna cable and connectors. WARNING: Use extreme caution when you install or remove an outdoor antenna. If the antenna starts to fall, let it go! It could contact overhead power lines. If the antenna touches the power line, contact with the antenna, mast, cable, or guy wires can cause electrocution and death. Call the power company to remove the antenna. DO NOT attempt to do so yourself. CONNECTING AN EXTERNAL SPEAKER OR HEADPHONES You can connect an optional external speaker or pair of headphones to the scanner. Use an 8-ohm external speaker or headphones capable of handling 3 to 10 watts of power (such as Radio Shack Cat. No. 21-549 or Cat. No. 20-210). The speaker's or headphone's cable must have a 1/8-inch plug. Simply plug the speaker's or headphone's cable into the scanner's EXT SP jack. NOTE: When you connect an external speaker or headphones, the scanner's internal speaker disconnects. RESETTING THE SCANNER If the scanner's display locks up or does not work properly after you connect power, you might have to reset the scanner. CAUTION: This procedure clears all the information you have programmed into the scanner. Use this procedure only when you are sure the scanner is not working properly. 1. Turn off the scanner. 2. While you press and hold down the 2 and 9 keys, turn on the scanner. (CJD/smc-05/06/94)