4. Find the DRIVEN ELEMENT CONNECTOR BLOCK with the short 1/4” rod match elements.
Position it over the 1/4” hole slightly forward of the driven element. Orient so the 2 connectors in the
block are facing to the FRONT. Secure with a 1/4-20 x 2-1/4" bolt and lockwasher and tighten in
place.
5. Now install 5 horizontal DIRECTOR elements to boom.
6. Using a tape measure, carefully center each of the 7 installed elements by matching the
exposed element length on each side of the boom. After all horizontal elements are physically
centered, double check quickly for symmetry by sighting along the element tips from the rear of the
boom on each side and look for any differences. Correct if found.
7. NOTE: The SHAFT RETAINERS should always be used for permanent and long term
antenna installations. However, for portable or temporary use, or whenever it is anticipated that the
antenna will be disassembled within a short time, the retainers may be left off. The button insulators,
normally a tight fit, hold the elements quite securely.
To install the stainless steel element SHAFT RETAINERS, start by using thumb and forefinger
to hold the retainer against the end of the PUSH TUBE (3" gray PVC 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 on the element up against opposite button insulator,
will help maintain center reference. If you push the first retainer too far, remove element from boom
and push retainer completely off the element, then try again). Now repeat for the other side of the
element. Continue installing retainers until all seven elements are locked in place.
8. Install two 8-32 x 1/4” set screws (internal Allen head - tool supplied) into each of the
SHORTING BARS. Slide the bars onto the 3/8” rod driven element tips and 1/4” Driven Element Block
Rods. Position the Shorting Bars as specified on the Dimension Sheet: measurement is from the outer
face of the driven element block to the inner face of the shorting bar. Align the bars and rods with each
other and tighten the setscrews.
THIS COMPLETES THE ASSEMBLY OF THE
HORIZONTAL
YAGI MODULE EXCEPT FOR
ADDING THE COAX BALUN AND THE MATCHING / PHASING HARNESS.
9. Now install the (VERTICAL) yagi element set. The longest element (REFLECTOR) mounts
forward of, and perpendicular to the first horizontal director already in position. Install as IN STEP #2.
10. Install the vertical 3/8” driven element.
11.
CONSTRUCTION FOR RIGHT HAND CIRCULAR POLARITY:
The installed position of
the VERTICAL DRIVEN ELEMENT BLOCK on the boom is critical to proper circularity. Using the
HORIZONTAL elements and the ASSEMBLY DRAWING as a reference, orient the boom so the
rearmost reflector is horizontal and the
horizontal driven element block is on top of the boom.
LOOKING AT THE ANTENNA FROM THE REAR, MOUNT THE VERTICAL DRIVEN ELEMENT
BLOCK ON THE
LEFT
HAND SIDE OF THE BOOM, ORIENTING THE TWO CONNECTORS TO
THE FRONT. See the Hardware dwg. Secure with 1/4-20 x 2-1/4” bolt and lockwasher. Install the
Shorting Bars as in step #8.
For Left hand Circularity, mount the block to the LEFT-hand side of the boom with the two
connectors to the front.
12. Now continue installing the DIRECTORS as before. Center the elements and add the
retainers. THIS COMPLETES THE SECOND YAGI (VERTICAL).
140CP14M ASSEMBLY MANUAL
Содержание 140CP14M
Страница 5: ...140CP14M DIMENSION SHEET ...
