Antennacraft C490 User Manual
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
Main Boom
Support Boom
Support
Straps
Support
Straps
Mast Clamp Assemblies
Wing Boom
1¼-Inch Screws
Wing Nuts
Wing Boom
Elements
Wing Boom
Crossover Wires
Mast
Main Antenna
Boom
Model C490
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 hardware required and the order in which you perform the steps
depend on the mounting and connection method you choose.
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.
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.
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.
Towards
TV Stations
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.
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 remain parallel to the main boom.
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 insulators.
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. Fold out the wing booms and secure them into position with the
two supplied 1¼-inch screws and wing nuts.
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 terminals (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 prebuilt cable without a weather boot, cover the connection with
weather-resistant tape.
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.
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 electronics 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 system’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.
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.
7000C490IS C490 1500267
to Central
Building
Ground
Ground Wire
75 ohm Grounding Block
Mast
Lead-In
Cable
The safest distance from powerlineshould be twice the height
of the mast plus twice the length of the antenna..
SAFEST
LOCATION
Consumer Product Safety Commission Information
WARNING: INSTALLATION OF
THIS PRODUCT NEAR
POWERLINES IS DANGEROUS.
FOR YOUR SAFETY, FOLLOW THE
INSTALLATION DIRECTIONS.
DANGER
WATCH FOR POWER LINES!
You can be KILLED if this antenna
comes near electric power lines.
READ INSTRUCTIONS.
IF AN ACCIDENT SHOULD
OCCUR WITH POWER LINES
1. Call for emergency help.
2. Don’t touch a person who has
come in contact with the antenna
and the powerline (you’ll be electrocuted, too).
3. If the victim is free and clear from
any electric powerlines and is unresponsive, administer CPR until
emergency help arrives.
FOLLOW THESE RULES AND LIVE
1. If you’re not sure about a careful, safe installation—don’t try
to do it yourself. Call your local power company or check
with Yellow Pages under “Antennas or Television and
Radio Antenna Systems” for an installer in your area.
2. With at least two people, assemble as much of the antenna
on the ground as possible.
3. Watch out for overhead power lines. Check the distance to
the power lines before you start installing—WE RECOMMEND YOU STAY A MINIMUM OF TWICE THE MAXIMUM
LENGTH OF THE ANTENNA AND ITS MAST AWAY
FROM ALL POWER LINES.
4. Do not use a metal ladder.
5. Remember, even the slightest touch of an antenna to a
power line can cause a fatal shock.
6. Don’t try to do the job on a windy day.
7. Have a friend watch as a spotter on the ground when you’re
on the roof to see things you can’t.
8. If you start to drop the antenna, get away from it and let it
fall.
9. If any part of the antenna comes in contact with a power
line CALL YOUR LOCAL POWER COMPANY; DON’T TRY
TO REMOVE IT YOURSELF! They will remove it safely.
10. Keep mast, lead-in and metal guy wires away from power
lines, too. They are all excellent conductors of electrical
current.
11. Be sure everyone understands the danger of touching an
overhead power line. Tell them never to try to remove any
object touching a power line.
12.
Make sure the antenna and mast are properly grounded.
SELECT AND MEASURE YOUR INSTALLATION SITE
Before attempting to install your antenna, think of where you
can best place your antenna for safety and performance. Most
antennas are supported by pipe masts attached to the chimney,
roof, or side of the house. Generally, the higher the antenna
is above the ground, the better it performs. A good practice is
to install your antenna about 5 to 10 feet above the roof line
and away from power lines and obstructions.
Remember that the FCC limits your antenna height to 60 feet. If
possible, nd a mounting place directly above your set, where
the antenna lead-in wire can take a short, vertical drop on the
outside of the house for entry through a wall or window near
the set. To determine a safe distance from wires, power lines,
and trees:
1. Measure the length of your antenna.
2. Add the antenna length to the height of your tower or
mast.
3. Double this total for the minimum recommended safe
distance.
If you cannot maintain this safe distance, STOP!
GET PROFESSIONAL HELP.
CHOOSING A STRUCTURE MOUNT
Follow the installation directions for the individual type of
mount you choose.
BASE AND ROO F
MOUNT: Mast locks
into U-b olt. Swivel
base ts the slope of
most rods.
VENT PIPE MOUNT:
For smaller antennas.
Attaches to vent pipe.
WALL MOUNTS:
Used on side of
structure.
CORNER MOUNTS:
Two Y-mounts with
straps for chimney
corner mounting.
TRIPOD MOUNT: Sturdy antenna mount for larger antennas subject to stronger winds.
Fits most roof slopes.
TELESCOPIC MAST: Has
interl ocking sections, for
professional use only.
UNIVERSAL MAST ANCHOR
MOUNT: Has U-bolt for easy
swivel. Adapts to most roof
slopes.
EAVE MOUNT: For attaching antenna mast
to hanging rafters or
trim boards.
CHIMNEY
RATCHET
MOUNT: Provides
secure mounting
to chimney with
straps.
TOW E R : N o t
recommended,
for professional
use only.
GENERAL INSTALLATION DIRECTIONS FOR MAST
MOUNTED ANTENNAS
1.
Assemble your new antenna on the ground at the
installation site. Follow the separate assembly instructions that come with it.
2. Install the selected mount for your antenna.
3. Attach the mast and antenna to the mount.
Note: If you are going to use guy wires:
• Install guy wire anchor bolts
• Estimate length of guy wires and cut them
• Attach to mast using guy wire ring
• Have a second person hold the mast upright while
the guy wires are attached and tightened to the
anchor bolts
4. IF YOUR MAST DOES NOT HAVE A DANGER LABEL,
INSTALL THE SELF-ADHERING DANGER LABEL
PACKAGED IN ANTENNA HARDWARE KIT AT EYE
LEVEL ON YOUR MAST.
ANTENNA GROUNDING
To protect your house and your TV/FM installation, your
antenna system must be properly grounded.
1. Clamp a #10 copper wire to the base of the antenna
mast. Using standoffs every 4 to 6 feet, run the wire
down the building in as straight a line as possible.
2. Attach a 75 ohm grounding block (available at your local electronics store) to the antenna’s lead-in cable as
close as possible to the point where the cable enters
the house.
3. Attach the grounding wire to the cable’s grounding block
and run the wire to the central building ground.
Acceptable central building ground points may include:
• Grounded interior metal cold water pipe within ve feet
of the point where it enters the building.
• Grounded metallic service raceway
• Grounded electrical service equipment enclosure
• 8-foot grounding rod driven into the ground (only if
bonded to the central building ground by #6 or heavier
bonding wire)
• Other acceptable grounding electrodes that comply with
sections 250 and 810 of the National Electrical Code
(NEC).
ANTENNA REMOVAL
To remove the antenna, follow the instructions for installing
the antenna, but start with the last step rst. That’s the only
safe way to remove an antenna.
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