TOOL REQUIRED FOR ASSEMBLY: screwdriver, 11/32 nut driver or wrench, 7/16” and 1/2” end
wrenches and sockets, measuring tape.
Start by laying out the boom sections using the DIMENSION SHEET as a guide. Use 8
-
32 X 1
-
1/4
screws and locknuts to join sections.
Note: If mounting antenna to a standard H
-
frame with a T
-
brace kit, it is important to
install the T
-
brace coupling bars to antenna before elements. Refer to H
-
Frame and T
-
brace
drawings for
placement and more information.
ASSEMBLING THE HORIZONTAL ELEMENTS
2.
Separate elements by length into two identical sets, "H" and "V". Lay out the "H" elements by
length and position as shown the DIMENSION sheet. Start with the reflector (longest) element.
Balance it on your finger to find rough center and push on a black button insulator to about 1/2” off
center. Push the element through the hole on the boom and install the second button, snugging it
up into boom. DO NOT BOTHER ACCURATELY CENTERING the element at this time and DO
NOT INSTALL the stainless steel shaft retainers yet. It is easier to do it after all the horizontal
elements are installed in the boom.
3.
Install the 3/16” rod DRIVEN ELEMENT as you did the reflector. Then continue with the installation
of the DIRECTORS.
Note that the Director Elements do not consistently diminish in length
from rear to front, so pay close attention to length and position.
4.
Now begin centering the elements. Use a tape measure to EQUALIZE the amount the element
sticking out on each side of the boom. Once you have all the elements centered, sight down the
element tips from the rear comparing each side. Look for any obvious discrepancies and correct if
found.
5.
NOTE: The SHAFT RETAINERS, for securing the elements, should always be used for permanent
and long term antenna installations. For portable or temporary use the retainers may be left off.
The button insulators, normally a tight fit, hold the elements quite securely.
To install the stainless steel SHAFT RETAINERS, use thumb and forefinger to hold the retainer
over the end of the PUSH TUBE ( 3/8" x 3" tube, supplied in the kit), internal fingers on retainer
dished into tube. HOLD THE ELEMENT FIRMLY TO PREVENT IT FROM SLIDING OFF CENTER
and press the retainer onto the element end and continue until retainer butts on insulator button.
Locking pliers,
lightly
clamped up against opposite button insulator will help maintain center
reference. If you push the first retainer too far, remove element from boom, push retainer
completely off the element, and start over. Install another retainer to the opposite side of the
element. Continue installing retainers until all elements are locked in place.
6.
Mount the
HORIZONTAL
DRIVEN ELEMENT BLOCK / ROD ASSEMBLY to the
TOP
of the boom
using a single 8
-
32 X 1
-
1/4" screw. Orient the block with the two balun connectors facing to rear.
Install the 8
-
32 x 1/4” set screws (internal Allen head
-
tool supplied) into the SHORTING BARS.
Slide the bars onto the Driven Element Block Rods as shown on the Dimension Sheet and tighten
the set screws.
7.
Mount the JUNCTION BLOCK as shown on the Dimension Sheet. Secure with 8
-
32 x 1
-
1/4" screw.
(SEE PICTURE ON NEXT PAGE FOR MORE INFORMATION).
ASSEMBLING THE VERTICAL ELEMENTS
8. Repeat steps #2 through #5 for the Vertical elements, using the Dimension Sheet as your guide to
lengths and spacing.
2MCP8A ASSEMBLY MANUAL
Содержание 2MCP8A
Страница 2: ...2MCP8A DIMENSION SHEET...
