Radio Shack PRO-72 owner manual Connecting AN EARPHONE/ Headphones, Connecting an Optional Antenna

Connecting an Optional Antenna

The ANT jack on the top of the scanner makes it easy to use the scanner with a variety of antennas. Instead of the supplied antenna, you can attach a different one, such as an external mobile antenna or outdoor base station anten- na. Your local RadioShack store sells a variety of anten- nas.

Always use 50-ohm coaxial cable, such as RG-58 or RG- 8, to connect an outdoor antenna. For lengths over 50 feet, use RG-8 low-loss dielectric coaxial cable. If your an- tenna’s cable does not have a BNC connector, you will also need a BNC adapter (also available at your local Ra- dioShack store).

Follow the installation instructions supplied with the anten- na, route the antenna cable to the scanner, then connect it to the ANT jack.

Warning: Use extreme caution when installing or remov- ing an outdoor base station antenna. If the antenna starts to fall, let it go! It could contact overhead power lines. If the antenna touches a 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 EARPHONE/ HEADPHONES

For private listening, you can plug an earphone or mono headphones (available at your local RadioShack store)

with a 1/8-inch plug into the jack on top of your scan- ner. This disconnects the internal speaker.

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