15 METER INSTALLATION
INTERNATIONAL ANTENNA COMPANY
888-268-4214 CLICK HERE FOR PRINTABLE PDF
are the proud owner of the new DOUBLE BAZOOKA ANTENNA. The first thing
to do is to consider which direction you want your maximum signal to
radiate. The Antenna tends to be omni-directional, however, the largest
lobes radiate from the sides. If you want your maximum signal to radiate
North and South, extend the ends East and West. The antenna should be
mounted in an inverted "V" configuration for the best results. The apex
should be 20 to 40 feet above around. However, the antenna can be
installed as a horizontal dipole with equally good performance.
on a push up pole or tower is easiest. Suspend the apex of the antenna
from the eyehook provided at the center of the "T" mold. Next, extend
the ends of the antenna outward and downward so the antenna forms an
upside down "V". Mount the ends at least 10 to 30 feet above the ground
forming an angle of no less 120 degrees from horizontal. Were horizontal
would be 180 degrees. The ends may be fastened with cord to poles or
whatever, using proper safety rules in safeguarding that persons, pets,
and other objects cannot come in contact with any of the elements as
shock hazards or RF burns could result.
• Whenever connecting
the ends of the antenna to an object it is recommended that a light or
medium relief “springs” with a safe working load limit of 5 lbs be
installed to compensate for any movement of the antenna or connecting
object. “DO NOT USE A TENSIONER DEVICE”
• If mounting the
antenna as a horizontal dipole without a center support it is
recommended to use a messenger line to reduce the strain on the
antenna. A messenger (nylon cord line) should be installed from one
mounting end through the center eyehook to the other mounting end.
mounting, the antenna connect a 50 ohm feed line such as RG-58, RG-8 or
RG-213 coax to the antenna and your transmitter. With a very low amount
of output power applied to the antenna at your desired frequency,
measure the SWR. An antenna analyzer may also be used to measure the
SWR. The antenna should exhibit an SWR of less than 2:1 across
entire 15 meter band. The antenna is cut for the CW portion of each band
from the factory so further adjustment is optional.
lower the SWR, fold the 300-ohm twin lead back on itself ensuring it is
flat on itself with no gaps equally on each side. The fold of 12, 24, 36
or 48 inches must be done in a (single fold over not multiple fold
overs). This procedure will raise the operating frequency of the CW
portion of the band. Once the lowest SWR is obtained tie wrap the folded
end securely to retain its position. If you measure a higher SWR, make
sure that the antenna is not near or touching any metal objects such as
rain gutters, aluminum siding, etc.
After making sure the SWR
is within spec and everything is clear of the antenna. You are ready to
operate and enjoy all of the great signals and DX contacts that this
We at IAC wish you the greatest DX' ing and are
sure you will be pleased with your purchase. By enjoying the Double
Bazooka, we hope you will give future consideration to the optional
phased array add on that gives up to 20db front to back ratio and an
additional forward gain of 4.5db.
IAC ACCEPTS NO LIABILITY FOR DAMAGE OR INJURY RESULTING FROM THE INSTALLATION AND USE OF THIS ANTENNA.