Preparing Your Receiver

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

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

Note: If your antenna has 300Ω twin-lead cable, consult your local RadioShack store for the correct adapter.

1.Disconnect the supplied FM antenna from the receiver’s FM UNBAL 75Ω terminal.

2.With a stripping tool, remove about 11/2 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.

Inner Insulation

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

Center Wire

Outer Insulation

Shielding

5.Pull the shielding to one side. Connect the center wire to the receiver’s FM UNBAL 75Ω terminal. Twist the shielding to secure any loose wire strands, and connect it to the FM UNBAL 75Ω terminal.

Outdoor FM Antenna

Shielding

Center Wire

LOOP

ANTENNA

AM

ANTENN

FM UNBAL 75

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.

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Optimus 31-3042 owner manual Preparing Your Receiver