M2 Antenna Systems 2MCP22 Assembly Manual - 2McP22 Assembly Manual
TOOL REQUIRED FOR ASSEMBLY: screwdriver, 11/32 nut driver or wrench, 7/16” and1/2” end
wrenches, pliers, measuring tape.
1. Start by laying out the boom sections, noting hole positions and matching to the DIMENSION
SHEET. Use 8-32 X 1-1/2” screws and locknuts to join 1” to 1-1/4” sections; 1-3/4” screws for 1-1/4” to
1-1/2” sections.
2. Separate elements by length into two identical sets, “H” and “V.” Position the “H” element set along
the boom by “H” 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 holes 1/2" from the rear of the boom and install the
second button, snugging it up into boom. DO NOT BOTHER CENTERING the element at this time and
DO NOT INSTALL the stainless steel shaft retainers yet. It is easier to do 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. Begin installing the stainless retainers. Use thumb and index finger to hold a retainer over end of the
3/8 x 3” push tube (retainer dished into tube). Hold the element firmly and start the retainer onto the
rod by applying pressure with the push tube. Push the retainer until up tight against the button insulator
(Locking pliers,
lightly
clamped up against opposite button insulator will help maintain center reference
and keep you from pushing the first retainer too far). Repeat for the opposite side. 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 and the driven element rods. Position the Shorting Bars at
the ends of the 3/16” rod that passes through the boom. Align the bars with each other and tighten the
set screws.
7. Mount the "T" JUNCTION BLOCK on the top of the boom to holes about 9” to the rear of the vertical
driven element block. Orient "N" feed connector to the rear. Secure with 8-32 x 1-1/4 screw.
8.
ASSEMBLING THE VERTICAL ELEMENTS
Repeat steps #2 through #5 for the Vertical elements, using the Dimension Sheet as your guide to
lengths and spacing.