Tools handy for assembly process: Phillips head screwdriver, 5/16”,11/32” spin-tight or socket, 7/16”
end wrenches / sockets, measuring tape.
1. This antenna uses a one-piece boom that will be rear mounted.
2. Lay out the elements by length and position as shown on the
DIMENSION
sheet. Start with the
reflector (longest) element and push on a black button insulator to about 1/2” from the center of the
element. Push the reflector element through the element hole towards the rear of the boom. (Refer
to the
DIMENSION
sheet for proper placement) Install the second button insulator on the other
side of the element, pushing it up into boom.
DO NOT BOTHER WITH ACCURATELY
CENTERING the element at this time and
DO NOT INSTALL
the stainless steel internal locking
keepers yet. This is easier to do after all of the elements are installed in the boom.
3. Install the
DRIVEN ELEMENT
in the same way as you did the reflector element. Then continue
with the installation of the
DIRECTOR or DIRECTORS
.
4. Now begin centering the elements. Use a tape measure to
EQUALIZE
the amount of each element
sticking out on each side of the boom. Once you have all of the elements centered, sight down the
element tips from the rear comparing each side. Look for any obvious discrepancies and correct if
found.
5. Install the stainless steel keepers to secure the elements.
NOTE:
For portable or temporary use of the antenna, the
keepers may be left off. The button insulators, (normally a tight
fit) hold the elements quite securely.
To install, use thumb and forefinger to hold the keeper over the
end of the
PUSH TUBE.
Make sure that the internal fingers of
the keeper are dished into the push tube.
HOLD THE
ELEMENT FIRMLY TO PREVENT IT FROM SLIDING OFF
CENTER
and press the keeper onto the element end and
continue until the keeper is snug on the insulator button.
Locking pliers,
lightly
clamped up against the opposite button insulator, will help maintain center
reference. If you push the first keeper too far, remove the element from the boom, push the keeper
completely off the element, and start over. Install another keeper to the opposite side of the
element. Continue installing keepers until all elements are locked in place.
6. Next, assemble the Gamma Match assembly. Start by sliding a
#6 flat washer over the end of the Gamma Feed block stud.
7. Slide the Gamma Insulator over the Gamma Rod, leaving 1/8”
of the insulator exposed beyond the end of the Gamma Rod.
Slide this Gamma Rod and Insulator over the end of the
Gamma Feed block stud.
8. Now, slide a #6 lock washer over the Gamma Feed block stud
and finish the assembly with a 6-32 nut. *
Note*
The connector
stud can spin freely. Use a pair of needle nose pliers or a small
wrench to hold the flat surface when tightening.
9. Next, attached the Gamma Match assembly to the boom, using a single 8-32 x 1 1/4” screw. Make
sure to orient the Feed connector towards the rear of the antenna.
10. Now slide the Gamma Tube over the Gamma Insulator and refer to the
DIMENSION
sheet for
proper placement.
Installing Keepers
406-6SX ASSEMBLY MANUAL
