Antennacraft C490 User Manual
Step 2 unfolding the elements, Step 1 assembling the antenna, Step 4 attach to the mast
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