DX Engineering SkyHawk 3X10, Инструкция по эксплуатации

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Before you start assembling the antenna, read through the instructions completely, paying special
attention to the diagrams. When you unpack the box, do so on a surface where you will not lose
small parts. Check the parts against the PARTS LIST, identifying each part carefully.
NOTE: Check to see that all parts are present before beginning assembly.
Installation Notes
CHOOSING AN INSTALLATION SITE: As with all directional antennas, care must be taken in
the choice of an installation site for your SkyHawk 3X10. Select a place clear of power lines or
other obstructions. The SkyHawk 3X10 should be mounted at least 30 ft (9.1 m) above the ground
for proper operation. If the SkyHawk 3X10 is mounted a full-wave above ground, the takeoff angle
is 14° with a minor lobe at 40° or so. For a 1/2-wave it’s closer to 20°. At mounting heights below
1/2-wave the takeoff angle is much greater than 20°. There’s no easy way to calculate it, but there
are graphs for wave angles at heights of 1/4, 1/8 and so on in any edition of the A.R.R.L.
Antenna
Handbook . The SkyHawk 3X10 should be able to rotate without hitting anything. Finally, it
should not be near any large masses of metal, like metal roofing or siding. Plan your installation so
that metallic guy wires are broken up with compression insulators and no other antennas are nearby,
i.e. dipoles mounted right under the beam.
MASTS AND GUYING: In order to avoid coupling between antenna elements and guy wires that
can de- tune the antenna it may be necessary to break up the guy wires with insulators. If the
separation between the antenna and the highest set of guys is less than 15' (4.6m) it would be a good
idea to use insulators on each of the uppermost guys at intervals of 10' (3m). Place the first
insulator on each guy AT THE MAST OR TOWER, for that too is a conductor that can be coupled
to the antenna by any horizontal or near-horizontal guy wire connected to it.
Rivet Installation
The elements of your SkyHawk 3X10 are assembled with two or three blind rivets per joint. Blind
rivets were chosen to provide fast, strong, reliable, vibration proof assembly, with high grip and
pull-up strengths. Open end stainless steel rivets are used because they provide better than 80%
more shear and tensile strength than closed end aluminum rivets. Blind rivets are easily set by:
1. Line up the holes in each tube as shown in the diagram.
2. Insert a blind rivet in each hole.
3. Making sure the rivet is fully seated, set the rivet with rivet tool.
4. Repeat step 3 for the other rivets.
If for some reason you need to remove a blind rivet: Blind rivets may easily be removed by
drilling through them with a 1/8(3) drill bit. Be careful not to drill through the entire element and
be sure to remove any remnants left from the removed rivet.