Antennacraft C490 User Manual

Step 2 unfolding the elements, Step 1 assembling the antenna, Step 4 attach to the mast

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Step 2 Unfolding the Elements

1. Hold the main boom’s elements near the pivot points and pull

them away from the boom until they snap into the support insu-
lators.

Caution: To avoid damage to the elements, do not pull them near
their outer ends. Once the elements are locked into position, do not
attempt to unlock them. Doing so might break the elements.
2. Hold each wing boom and turn its elements until they snap

squarely into place (perpendicular to the wing boom).

3. Set up the mast, then rotate it so the antenna’s shorter elements point

toward the broadcast antennas of the stations you want to receive.

Step 5 Routing the Cable to Your
Audio/Video System

Use plastic tape or mast standoff insulators to secure the coaxial

cable to the mast at about 3-foot intervals. Continue down the roof

and the side of the house using roof and wall standoff insulators.

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

between the mast and where the cable enters the house.

Use a 75 ohm grounding block (available at your local electron-

ics store) where the coaxial cable enters the house. Read the Con-

sumer Product Safety Commission Information for grounding

instructions.

Use a wall-through lead-in tube (not supplied) to neatly route the

coaxial cable through walls.

Loosely bend the cable to form a drip loop before the cable en-

ters the house.

Connect the antenna’s coaxial cable to your audio/video sys-

tem’s antenna terminals according to the types of connections

you have. Your local electronics store carries a variety of splitters

and other accessories; choose the one that best suits your needs.

Step 1 Assembling the Antenna

Assemble the entire antenna on the ground.
1. Use the supplied hardware to assemble the three main boom

sections, as shown. If necessary, lift one end of the main boom
so the crossover wires reach the threaded posts.

3. Attach the other mast clamp assembly to the support boom. (Be

sure it faces the same direction as the main boom’s mast clamp
assembly). Fold out the two sets of metal support straps on the
support boom and attach them to the corresponding holes on the
main boom using the two supplied 1 ½-inch screws and wing nuts.

Before You Begin
Before beginning installation, read these directions and the
Consumer Product Safety Commission Information. For
your safety and convenience, plan each step of the installation
and purchase the necessary hardware in advance. The hard-
ware required and the order in which you perform the steps
depend on the mounting and connection method you choose.

2. Use the supplied hardware to loosely attach one of the supplied

mast clamp assemblies to the main boom, as shown. Move the
antenna’s elements out of the way as needed to access the mast
clamp holes.

Limited Warranty

This product is warranted by Antennacraft against manufacturing defects in material and workmanship under normal
use for ninety (90) days from the date of purchase from Antennacraft dealers.
EXCEPT AS PROVIDED HEREIN, ANTENNACRAFT MAKES NO EXPRESS WARRANTIES AND ANY IMPLIED WARRANTIES,
INCLUDING THOSE OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE, ARE LIMITED IN DURATION
TO THE DURATION OF THE WRITTEN LIMITED WARRANTIES CONTAINED HEREIN. EXCEPT AS PROVIDED HEREIN,
ANTENNACRAFT SHALL HAVE NO LIABILITY OR RESPONSIBILITY TO CUSTOMER OR ANY OTHER PERSON OR ENTITY
WITH RESPECT TO ANY LIABILITY, LOSS OR DAMAGE CAUSED DIRECTLY OR INDIRECTLY BY USE OR PERFORMANCE
OF THE PRODUCT OR ARISING OUT OF ANY BREACH OF THIS WARRANTY, INCLUDING, BUT NOT LIMITED TO, ANY
DAMAGES RESULTING FROM INCONVENIENCE, LOSS OF TIME, DATA, PROPERTY, REVENUE, OR PROFIT OR ANY
INDIRECT, SPECIAL, INCIDENTAL, OR CONSEQUENTIAL DAMAGES, EVEN IF ANTENNACRAFT HAS BEEN ADVISED OF
THE POSSIBILITY OF SUCH DAMAGES.
Some states do not allow limitations on how long an implied warranty lasts or the exclusion or limitation of incidental
or consequential damages, so the above limitations or exclusions may not apply to you.
In the event of a product defect during the warranty period, take the product and the sales receipt as proof of the
purchase date to any ANTENNACRAFT dealer. ANTENNACRAFT will, at its option, unless otherwise provided by law:
(a) correct the defect by product repair without charge for parts and labor (b) replace the product with one of the
same or similar design; or (c) refund the purchase price. All replaced parts and products, and products on which a
refund is made, become the property of ANTENNACRAFT. New or reconditioned parts and products may be used in
the performance of warranty service. Repaired or replaced parts and products are warranted for the remainder of the
original warranty period. You will be charged for repair or replacement of the product made after the expiration of
the warranty period.
This warranty does not cover: (a) damage or failure caused by or attributable to acts of God, abuse, accident, misuse,
improper or abnormal usage, failure to follow instructions, improper installation or maintenance, alteration, lightning
or other incidence of excess voltage or current; (b) any repairs other than those provided by an ANTENNACRAFT
authorized service facility; (c) consumables such as fuses or batteries; (d) cosmetic damage; (e) transportation,
shipping or insurance costs; or (f) costs of product removal, installation, set-up service adjustment or reinstallation.
This warranty gives you specific legal rights, and you may also have other rights which vary from state to state.
ANTENNACRAFT, PO Box 1005, Burlington, IA 52601, 319-758-8050 www.antennacraft.net 8/09
Product may vary from depiction. Mast not included.

WARNING: Installation of this product near powerlines is dangerous.

For your safety, follow the installation directions.

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. Do not attempt to remove it yourself.

Washers

Crossover

Wires

1½ -Inch Screws

Wing Nuts

Splint

Threaded Posts

Wing Nuts

U-Bolt

Main Boom

Mast Clamp

Lock Nuts

Backup Plate

Spade Ends

Strain-Relief Tab

Lead-In Terminals

Matching Transformer

F-Connector

Weather Boot

Washers

Wing Nuts

UHF

Bowtie

Lead-In Terminals

UHF/VHF

Isolation Network

Main Boom

Outdoor HDTV Antenna for VHF/UHF/FM

Model C490

4. Press the supplied large end plugs into the main boom and the

support boom.

5. Pull both UHF bowties away from the main boom until they lock

into place. Then slide each of the bowtie’s unattached ends over
the antenna’s lead-in terminals labeled CONNECT LEAD-IN
HERE (one for each half of the bowtie on each side of the boom).

Note: Both sections of the UHF/VHF isolation network should re-
main parallel to the main boom.

3. Fold out the wing booms and secure them into position with the

two supplied 1¼-inch screws and wing nuts.

Main Boom

Support Boom

Support

Straps

Support

Straps

Mast Clamp Assemblies

Wing Boom

1¼-Inch Screws

Wing Nuts

Wing Boom
Elements

Wing Boom

Step 4 Attach to the Mast

We recommend that you enlist the help of another person before you
put up the mast or attach your antenna to it. How you set up your
mast depends on your specific installation. Refer to the Consumer
Product Safety Commission for recommended methods.
1. Slide the antenna’s mast clamp assemblies over the end of the mast.
2. Tighten the mast clamp assemblies lock nuts to hold the antenna

in place. Do not over tighten the lock nuts.

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 ½-inch of clearance between the parts.

Crossover Wires

Mast

Main Antenna
Boom

4. Press the supplied small end plugs into the wing booms.

Step 3 Connecting the Coaxial Cable

We recommend RG-6 cable and, if you prepare your own cable, a
quality F-connector. (Your local electronics store 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 cable before
you attach the F-connector.
1. Thread the supplied matching transformer’s spade terminals

through the antenna’s strain-relief tab.

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

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

3. Screw the cable’s F-connector onto the matching transformer.
4. Slip the weather boot over the connection. If you use a pre-

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

7000C490IS C490 1500267

Towards
TV Stations

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