Alpha Antenna HexTenna User manual

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Model – HexTenna™
User Guide, Version 3.2, July 23, 2019
Operation
The HexTenna™ by Alpha Antenna® is a portable full-sized legal limit antenna, which is deployable as a
UHF/VHF/HF Vertical/Dipole antenna or a 2-20 meter Yagi if purchased. Please feel free to email us at
alphaantenn[email protected] if you have any questions.
Excess RF Exposure Warning
In the United States, the Federal Communications Commission has established guidelines for human exposure
to Radio Frequency (RF) electromagnetic fields. The commission’s requirements are detailed in parts 1 & 2 of
the FCC’s rules and regulations {47 CFR, 1.1307(b), 1.1310, 22.1091, 2.1093}. It is the responsibility of the
owner/operator of this device to follow all applicable warnings and precautions regarding human exposure to
RF fields. Additional references: http://www.arrl.org/rf-exposure
Yagi Assembly, if purchased
Dipole Assembly Vertical Assembly

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Post Assembly Instructions
Step HexTenna Assembly
1 Attach your coax to the built in SO-239 on the Alpha Match hub.
2 Use a measuring tape to adjust the length of the whip(s) to closely match the lengths on the charts below.
3 Make any final adjustments to the whip(s) until the lowest SWR is achieved.
Tune by adjusting the following lengths on each element.
Yagi and Dipole element lengths
Approximate element lengths of each Yagi & Dipole element
Band Yagi ‘Driven Element’ and ‘Dipole Element’ Yagi ‘Reflector Elements’
40 16’ 9” (5.1054 Meters) & install the clip-on wire element * Not supported
30 10’ 4” (3.1496 Meters) & install the clip-on wire element * Not supported
20 16 feet 11 1/2 inches (5.1689M) 17 feet 3/4 inch (5.2M)
17 13 feet 3/4 inch (3.98145M) 13 feet 5 1/2 inches (4.1M)
15 10 feet 11 1/2 inches (3.3401M) 11 feet 7 3/4 inches (3.55M)
12 9 feet 6 inches (2.8956M) 9 feet 10 1/4 inches (3M)
10 8 feet 3 1/2 inches (2.5273M) 8 feet 6 1/3 inches (2.6M)
6 4 feet 8 inches (1.1684M) 5 feet 1 inch (1.55M)
2 4 feet 7 1/2 inches (1.4097M) 4 feet 9 inches (1.45M
* As a Yagi, Alpha Antenna does not support 30 or 40 meters on the HexTenna™. When deployed as a Dipole,
tuning on 30/40 meters is achieved on the Dipole after the wire elements are installed, by equally retracting
each element till resonance is achieved. The wire add-on elements are attached to the tip of each telescopic
element with the clips, and deployed to form an M-Shaped dipole. The wire element can be held straight by
pushing the included stake into the ground or removing the stake and tying off either end with the included
green insulators to a tree or other support. IMPORANT – Do not allow wire elements to lay on the ground.
Vertical/Counterpoise element lengths
Vertical Element & Counterpoise approximate lengths (Roll out the single counterpoise for minimum SWR)
Band
Approximate length of
Vertical Element
Approximate Length of 4 user provided
Counterpoise Elements**
**Lengths of the Vertical Element & Counterpoise
may vary based upon variables unique to the user
site and/or equipment. Enter installation specific
notes here.
20 13 feet 2 inches 18 feet 2 inches (5.5372M)
17 9 feet 8 inches 14 feet 2 3/8 inches (4.32562M)
15 8 feet 7 3/4 inches 12 feet 1 1/2 inches (3.7M)
12 7 feet 1 inches 10 feet 4 inches (3.15M)
10 6 feet 9 feet (2.74M)
Approximate length of Vertical Element with No Counterpoise
440 Mhz 2 feet 2 inches (0.66M) No counterpoise recommended
220 MHz 3 feet 4 3/4 inches (1.04M) No counterpoise recommended