VU-75XR VHF/UHF/FM Antenna  (150-2151)  Installation   Faxback Doc. # 7696

The VU-75XR VHF/UHF/FM Antenna is specially designed to provide improved
performance compared to similar-sized antennas.

ASSEMBLING THE ANTENNA

We recommend you 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 main boom's elements 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.  Bolt the triangular wing boom brackets onto the main boom.

4.  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.

5.  Use the supplied hardware to loosely attach the supplied mast
    clamp assembly to the main boom.

6.  Press the supplied end plugs into the ends of the antenna boom.

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
       transformer'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
    antenna's 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 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 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.

Slide the antenna's mast clamp assembly over the end of the mast.  Then
tighten the mast clamp assembly's nuts to hold the antenna in place.  Take
care not to overtighten the nuts.

SETTING UP YOUR MAST

How you set up your 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
shown below:

If you have:

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

We recommned you use Radio Shack Cat. No. 15-1252, splitter

If you have:

  Coaxial antenna lead-in
  Twin-lead UHF terminals
  Twin-leas 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 terminals

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

If you have:

  Twin-lead information 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

(LB/all-09/22/94)