80/40m Dual Band Bazooka Antenna

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Your Price: $233.00

Part Number:DBB-8040

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PLEASE NOTE: This antenna can only be shipped inside the United States. No International orders will be accepted.

A DOUBLE BAZOOKA antenna is an extremely broad-banded Half Wave Antenna that can operate efficiently across an entire Ham band with little change to the SWR. The DOUBLE BAZOOKA antenna design was first conceived as a radar antenna in the early 1940's. for use by the U.S. Government. It was modified for amateur radio use in the 1950's.

Home-brew DOUBLE BAZOOKA's rarely survived harsh elements and wind-load stresses. The weak points were typically at the feed point and coax twin lead connection. The IAC design is culmination of a three-year development program, including state of the art materials and encapsulation techniques, to provide the amateur radio operator with an antenna that will endure such harsh elements.

IAC has taken the same high performance, Mil-Spec quality construction and applied this into a 80/40 Dual Band Antenna.

Antenna construction centers around 50 ohm Belden 8259 coax cable in combination with 300 Ohm transmission line end sections. The end result is a center feed broadband full wave dipole.

Provided for the operator's 50 Ohm feed line is a SO 239, a silver plated connector having Teflon insulation and a gold plated socket.

The features of the proprietary design anchor the connector in high shear UV resistant molding. The coax element is sealed in this molding, which exhibits high adhesion to the PVC Jacket.

Mil-Spec heat shrink tubing, with a melting inner liner, is utilized to seal and strain relieve the transition area between the coax and the twin lead. A heat shrink cap is applied to the outer most end of the twin lead completing antenna construction.

This unique design eliminates the need for antenna matching baluns and can be fed directly with 50 Ohm coax. The 80/40 DUAL BAND BAZOOKA is extremely efficient and typically provides SWR readings of less than 2:1 over most of the 80 and 40 meter amateur bands. Under certain conditions a wide range antenna tuner may be required to obtain a lower SWR.

Since this antenna has no exposed metal wire static charges cannot build up thus reducing noise by 6 dB over antennas constructed of exposed wired.

The 80/40 DUAL BAND BAZOOKA antenna will handle 3 KW continuous power with no effect to performance.

The 80/40 DUAL BAND BAZOOKA is recommended to be mounted in an inverted “V” configuration for optimum results.

In addition to the listed bands, you will find that our DUAL BAND BAZOOKA antennas will also operate on some other bands, with the aid of an antenna tuner.

OPERATING BAND	ANTENNA LENGTH	MOUNTING HEIGHT ABOVE GROUND	END HEIGHT ABOVE GROUND
40/20 Meters	68.0 feet	25 - 40 feet	10 - 30 feet
80/40 Meters	129.0 feet	30 - 60 feet	20 - 50 feet

80/40 METER DUAL BAND INSTALLATION - ATTACHMENT
INTERNATIONAL ANTENNA COMPANY
888-268-4214
CLICK HERE FOR PRINTABLE PDF

You are the proud owner of the new DOUBLE BAZOOKA DUAL BAND 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 30 to 60 feet above around.

Mounting 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 both antennas outward and downward so the antenna forms an upside down "V". Mount the ends at least 15 to 40 feet above the ground forming an angle between 90 and 120 degrees from horizontal. Were horizontal would be 180 degrees. The 80 meter antenna leg on each side must be on the top of the 40 meter antenna leg.

Note: Ensure the 40 meter leg is not wrapped over the 80 meter leg.

When mounted as an inverted V keep the ends of the antennas separated by 3 to 7 feet in height at the ends to avoid interaction. An alternate configuration is to mount the 80 meter as a horizontal flat top and the 40 meter as a slight inverted V with an angle of the V you created is between 90 to 120 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”.
• The antenna must be mounted from a center support due to its weight. A messenger line is recommended to reduce the strain on the antenna legs. The messenger (nylon cord line) should be installed from one mounting end through the center eyehook to the other mounting end of the 80 meter antenna only.

After 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. Each of the antennas should exhibit an SWR of less than 2:1 across 250 KHz of the 80 and 40 meter bands. The antenna is cut for the CW portion of each band from the factory so further adjustment is optional.

To 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 over of either 12, 24, 36 or 48 inches must be done in a (single fold over not multiple fold overs) on each side of the antenna. This procedure will raise the operating frequency from the CW portion of the band. For more detail see tuning instructions on the IAC website located in the information section. 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, metal roofs, or metal push up pole.

Under certain conditions an antenna tuner may be required to obtain a lower SWR.

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 antenna offers.

IAC ACCEPTS NO LIABILITY FOR DAMAGE OR INJURY RESULTING FROM THE
INSTALLATION AND USE OF THIS ANTENNA