Preparing your receiver – Optimus 31-3042 User Manual

Page 23

Preparing Your Receiver

For the best radio reception, use an outdoor antenna. Follow these steps to
connect an outdoor FM antenna to the receiver using 75

Ω

coaxial cable.

Note: If your antenna has 300

Ω

twin-lead cable, consult your local RadioShack

store for the correct adapter.

1. Disconnect the supplied FM antenna from the receiver’s

FM UNBAL 75

Ω

terminal.

2. With a stripping tool, remove about 1

inches of the outdoor antenna

cable’s outer insulation to expose the cable’s shielding.

3. Fold back the shielding from the inner insulation.

4. Remove about 1 inch of the inner insulation from around the center wire.

5. Pull the shielding to one side. Connect the center wire to the receiver’s

UNBAL 75

Ω

terminal. Twist the shielding to secure any loose wire strands,

and connect it to the

FM UNBAL 75

Ω

terminal.

Note:

Grounding is not necessary for reception, but we recommend it for better

FM reception and to avoid damage from lightning when you use an outdoor FM
antenna. Use a separate piece of thick polyvinyl insulated wire to connect the
terminal to the building’s power service grounding electrode system.

Warning: Never connect a wire to a gas pipe for grounding since sparks might
ignite the gas.

Warning: To prevent injury, read and fol-
low all cautions and warnings that ac-
company the outdoor antenna.

Inner Insulation

Outer Insulation

Shielding

Center Wire

Caution: The cable’s shielding should
only touch the terminal.

FM
UNBAL
75

LOOP

ANTENNA

ANTENN

Shielding

Center
Wire

Outdoor FM Antenna