M2 KT36XA Assembly Manual - Kt36Xa Assembly Manual
10. ELEMENT INSTALLATION
We advise that you elevate the antenna boom onto a couple of sawhorses or bucks for the remaining assembly
steps. Use the DIMENSION SHEET as a guide to properly install the six elements onto the boom. If you have
not labeled which side of the element faces towards the front of the antenna, you will want to pay close attention
to the DIMENSION SHEET. In fact, you might want to label them now. You also might want to have a friend
handy to keep the antenna from moving on you.
Place the REFLECTOR ELEMENT onto the boom in the orientation shown on the DIMENSION SHEET. Set the
outside edge of the element clamp plate 2-1/2” from the rear of the boom. Locate two 3” saddles and insert
two
1/4-20 x 3” bolts through each of the holes. Next attach the two saddles to the underside of the element clamp
plates, and lightly tighten the entire assembly, so the element won’t move. Using a tape measure hooked to the
outside edge of the clamp plate facing the rear, mark off the location for the outside edge of the element clamp
on the REAR DRIVEN ELEMENT assembly with a marking pen or pencil. Install the REAR DRIVEN ELEMENT
as you did for the REFLECTOR. BE CAREFUL! This element is not installed in the same orientation. Make
sure you follow the element placement on the DIMENSION SHEET. Continue installing the rest of the elements
in the same fashion. Since the 2nd director only has one element clamp plate, it requires just a single 3” saddle.
Also take note that this element can be placed on the boom with the clamp cap facing either the FRONT or
REAR of the antenna.
After all of the elements have been installed take a couple of steps back and look down from the end of the
antenna. Check to see if the elements are lined up with one another. If any need to be fixed, simply loosen the
saddles, straighten, and re-tighten.
11. INSTALLATION OF PHASING LINES
Locate the two 3/8” tube phasing lines, the phasing line insulator, and one cable tie. Insert both tubes into the
two holes on the insulator. Temporarily loosen the 1/4-20 locknuts located on the FRONT and REAR DRIVEN
ELEMENTS and slide the two phasing lines into the one of the 3/8” clamp block sets. Allow the ends of the
phasing lines to stick out 4” past the ends of the clamp blocks. Now pull the phasing lines back, guiding them
into the clamp block set on the other driven element. Now re-tighten the four 1/4-20 locknuts. Set the insulator
about midway between the two elements and secure it with large nylon tie inserted through the bottom hole and
around the boom.
12. BALUN INSTALLATION
Refer to the figures on DUAL DRIVEN AND T-MATCH ASSEMBLY for this procedure.
Loosen the 2-1/2” U-bolt on the L-bracket and insert the 4:1 HF Balun with the connector facing towards the front
of the antenna. Position the Balun so that the U-bolt hits the edge of the front cap. Now tighten the U-bolt just
enough to hold firmly in place. BE CAREFUL! Overtightening might crack the case of the Balun. On each of the
mounting posts on the balun attach the balun straps (shorter side).
13. ‘T’-MATCH INSTALLATION
Refer to the figures on DUAL DRIVEN AND T-MATCH ASSEMBLY for this procedure.
Locate the two 1/2 x 23-1/2” ‘T’-Feed tubes and 3/8 x 10” fiberglass insulator. Install the 3/8” fiberglass insulator
into one of the 1/2” ‘T’-feed tubes. Align the holes and temporarily secure with a 8-32 x 1” screw. Now feed the
undrilled ends of both ‘T’-feed tubes into the two ‘T’-match shorting bars. Slide one of them back so you can
install the other end of the 3/8” fiberglass rod into the other 1/2” tube. Align the holes and secure with another 8-
32 x 1” screw. With all of the hardware loose, rotate the entire ‘T’-Match assembly up so that the two 8-32
screws fit right into the two Balun straps. Secure the two 8-32 screws with two 8-32 locknuts. Make sure there
is ample room to connect your feedline to the balun. Now set the two shorting bars to the dimensions shown on
the DIMENSION SHEET and tighten all the hardware.
14. BOOM TO MAST PLATE INSTALLATION
Locate the boom to mast plate, 3” U-bolts & saddles, and 2” U-bolts & saddles. Install the four 2” U-bolts on one
side of the boom to mast plate. Center the plate at the location shown on the DIMENSION SHEET, and install it
using the 3” U-bolts, saddles, 3/8” nuts, and lockwashers. If possible, attach the feedline to the balun and route
it forward to about 18 feet from the rear of the boom. Seal the connector with black tape, coax seal or
equivalent. A 3” U-bolt pattern exists should you need to mount the antenna to a 3” mast.