Connecting An Outdoor Antenna - Radio Shack PRO-89 Owner's Manual

1. Align the slots around the antenna's connector with the
tabs on the antenna jack.
2. Press the antenna down over the jack and turn the
antenna's base clockwise until it locks into place.

Connecting an Outdoor Antenna

Instead of a supplied antenna, you can connect an outdoor
base-station or mobile antenna (not supplied) to your scanner
using a BNC connector. Your local RadioShack store sells a
variety of antennas. Choose the one that best meets your
needs.
When deciding on a mobile or base-station antenna and its lo-
cation, consider these points:
• The antenna should be as high as possible on the vehicle
or building.
• The antenna and its cable should be as far as possible
from sources of electrical noise, such as appliances or
other radios.
• The antenna should be vertical for the best performance.
Always use 50 Ohm coaxial cable, such as RG-58 or RG-8, to
connect the base-station or mobile antenna. For lengths over
50 feet, use RG-8 low-loss dielectric coaxial cable. If the anten-
na cable's connector does not fit in the scanner's antenna jack,
you might also need a PL-259-to-BNC antenna plug adapter.
Your local RadioShack store carries a wide variety of coaxial
antenna cable and connectors.
Once you choose an antenna, follow the
mounting instructions supplied with the an-
tenna, after removing a supplied antenna.
Then route the antenna's cable to the scan-
ner and connect the cable to the scanner's
antenna jack.
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