Radio Shack VU-75XR User Manual

Before you begin, Assembling the antenna, Connecting lead-in cable to the antenna

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OWNER’S MANUAL — Please read before using this equipment.

VU-75XR VHF/UHF/FM Antenna with Matching Transformer

BEFORE YOU BEGIN

Before you begin installation, read this manual and the sepa-
rate Consumer Product Safety Commission information sheet.
For your safety and convenience, plan each step of the installa-
tion and purchase the necessary hardware in advance. The
hardware required and the order in which you perform the steps
depend on the mounting and connection method you choose.

Warning: When you install your antenna, use extreme caution.
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.

not attempt to remove it yourself.

ASSEMBLING THE ANTENNA

Assemble the entire antenna on the ground.

1. Use the supplied hardware to loosely attach the supplied

mast clamp assembly to the main boom, as shown.

Note: To access the mast clamp holes, move the antenna’s
elements out of the way as needed.

2. Press the supplied large end plugs into the main boom.

CONNECTING LEAD-IN CABLE
TO THE ANTENNA

We recommend RG-6 cable and, if you prepare your own ca-
ble, a quality F-connector. You can also use 300-ohm flat, twin-
lead cable. (RadioShack carries a variety of suitable cables and
connectors.)

Note: If you prepare your own coaxial cable, be sure to slide
the supplied matching transformer’s weather boot onto the ca-
ble before you attach the F-connector.

Using Coaxial Cable

To connect coaxial cable to your antenna:

1. Thread the supplied matching transformer’s spade termi-

nals through the antenna’s strain-relief tab.

2. Slide the spade terminals around the antenna’s lead-in ter-

minals (on both sides of the boom), then secure them with
the supplied flat washers and large wing nuts.

3. Screw the cable’s F-connector onto the matching trans-

former.

4. Slip the weather boot over the connection. If you use a

rebuilt cable without a weather boot, cover the connection
with weather-resistant tape.

Using Twin-Lead Cable

To connect flat, twin-lead cable to your antenna:

1. Split one end of the twin-lead cable for a length of about 3

inches. Then strip about

inch of insulation from both

leads.

2. Thread the stripped leads through the antenna’s strain-

relief tab.

3. Wrap each lead around one of the antenna’s lead-in termi-

nals (on both sides of the boom). Be sure there is enough
slack between the strain-relief tab and the antenna termi-
nals to prevent stress on the cable or the terminals.

4. Secure the leads with the supplied flat washers and large

wing nuts.

U-Bolt

Mast Clamp

Backup Plate

Main Boom

Lock Nuts

Lead-In Terminal

Weather Boot

F-Connector

Matching
Transformer

Strain-Relief Tab

Flat Washers

Large
Wing Nuts

Spade Terminals

Main
Boom