VU-120XR VHF/UHF  (150-2154)        Installation       Faxback Doc. # 7611
FM Antenna

The VU-120XR VHF/UHF/FM Antenna is specially designed to provide improved
performance compared to similar-sized antennas.  Radio Shack's engineers
have made this possible by using two special design features:

               UHF Bowtie - delivers more of the UHF signal to your TV.
                            Since UHF signals are more difficult to
                            receive than VHF signals, this antenna gives
                            UHF signals the extra boost they need.

VHF/UHF Isolation Network - prevents the two types of TV signals from
                            interfering with each other.  This results in
                            cleaner signals and better pictures on your
                            TV.

ASSEMBLING THE ANTENNA

We recommend two people assemble the entire antenna on the ground, then
mount the assembled antenna on the mast.  Follow these steps to assemble
the antenna.

1.  Fold out the elements on both sections of the main boom by holding
    them near the boom and pulling them until they snap into place.

Caution:  Do not pull out the elements by their ends.  If you do, you
          could damage an element.

2.  Fold out the elements on the smaller, separate wing booms until they
    snap into place.

3.  Fold out the two halves of the UHF bowtie until they lock into place.
    Then place the free end of each half of the UHF bowtie over its lead-
    in terminal.

4.  Bolt the triangular wing boom brackets onto the main boom.

5.  Insert the top and bottom wing booms in the triangular bracket and
    secure them with the four 1 1/4-inch screws and small wing nuts.

6.  Use the supplied hardware to assemble the two main boom sections.  If
    necessary, lift one end of the main boom so the crossover wires reach
    the threaded posts.

7.  Use the supplied hardware to loosely attach one of the supplied mast
    clamp assemblies to the main boom.

8.  Use the supplied hardware to attach the other mast clamp assembly to
    the cradle boom.  Then snap the plastic H-blocks onto the cradle boom.

9.  Press the supplied end plugs into the ends of the cradle boom and each
    antenna boom.  Then snap the main boom onto the cradle boom's
    H-blocks, with the mast clamp assemblies aligned and the blue plastic
    pieces on the main boom facing up.

CONNECTING LEAD-IN CABLE TO THE ANTENNA

Follow these steps to connect lead-in cable to the antenna.  We recommend
RG-6 cable and, if you prepare your own cable, a quality CF-56-F-connector
(both available at your local Radio Shack store).  You can also use
300-ohm flat, twin-lead cable.

Note:  If you prepare your own coaxial cable, slide the supplied matching
       tranformer's weather boot over the end of the cable before you
       attach the F-connector.

Follow these steps if you use coaxial cable.

1.  Thread the ends of the supplied matching transformer through the
    strain relief tab.  Then use the supplied washers and wing nuts to
    secure the transformer's leads to the antenna's lead-in terminals.

2.  Screw the cable's F-connector onto the matching transformer.  If you
    use a prebuilt cable without a weather boot, cover the connection with
    weatherproof tape.  Otherwise, slip the boot over the connection.

Notes:  Use plastic tape to secure the cable to the mast at about 3 foot
        intervals.

        Use coaxial nail clips every few feet to secure the cable to
        walls.

        Use a 75-ohm grounding block to ground the cable where the cable
        enters the house.

        Use a wall-through tube to neatly route the cable through walls.

Follow these steps if you use twin-lead cable.

1.  Split the cable for a length of about 3 inches.  Then remove about 1/2
    inch of insulation from the ends of the twin-lead cable.

2.  Thread the ends of the twin-lead cable through the antenna's strain-
    relief tab.  Then use the supplied washers and wing nuts to secure the
    twin-leads to the antenna's lead-in terminals.

Notes:  Allow enough slack between the strain-relief tab and the antenna
        terminals to prevent stress on the cable or terminals.

        Be sure the cable remains at least 4 inches away from all metal
        surfaces.

        Use standoff insulators about every 4 feet.

        Twist the cable about three turns between each standoff.

        Use a 300-ohm static discharge unit to ground the twin-lead cable
        at the point where the wire enters the house.

ATTACHING TO THE MAST

Caution:  The crossover wires must not touch the antenna boom, the mast,
          or each other.  If necessary, carefully bend the crossover wires
          to provide at least 1/2 inch of clearance.

SETTING UP THE MAST

How you set up the mast depends on your specific installation.  After you
set up the mast, rotate it so the antenna's shorter elements point toward
the broadcast antennas of the stations you want to receive.

CONNECTING TO YOUR TV/VCR

Connect the antenna's lead-in cable to your TV and FM receiver's antenna
terminals according to the type of cable you used.  A few methods are as
follows:

If you have:

Coaxial antenna lead-in
Twin-lead UHF terminals
Coaxial VHF terminal
Twin-lead FM antenna terminals

We recommend you use Radio Shack Cat. No. 15-1252, Splitter.

If you have:

Coaxial antenna lead-in
Twin-lead UHF terminals
Twin-lead VHF terminals
Twin-lead FM antenna terminals

We recommend you use Radio Shack Cat. No. 15-1139, Transformer/Splitter.

If you have:

Coaxial antenna lead-in
Combined coaxial VHF/UHF terminal
Coaxial FM antenna terminal

We recommend you use Radio Shack Cat. No. 15-1141, Hybrid Splitter/
Combiner.

If you have:

Twin-lead antenna lead-in
Twin-lead UHF terminals
Coaxial VHF terminal
Twin-lead FM antenna terminals

We recommend you use Radio Shack Cat. No. 15-1251, Splitter.

(br/all-9/20/94)