222XP40 ASSEMBLY MANUAL
1/2” end wrench). Secure the balun close to the boom with a nylon cable tie in such a way so that
it’s snug but not crushing or kinking the coax.
9. Install the 8-32 x 1/4” set screws (internal Allen head - tool supplied) into the four SHORTING
BARS. Slide the bars onto the 3/16” rod driven element tips and then onto the Driven Element
Block Rods. Position the Shorting Bars as specified on the DIMENSION SHEET: the distance
given is between the outer edge of the Driven Element Block and the inner edge of the Shorting
Bar. Align the bars and rods with each other and tighten the setscrews.
10. If you have not already done so, attach the boom to mast plate to the boom. It is normally
mounted at the balance point, as shown on the DIMENSION SHEET. Use two 1-1/2" U-bolts and
the stainless nuts and lock washers provided. DO NOT OVER TIGHTEN. 2” U-bolts are provided
for mounting the antenna to your
NON-CONDUCTIVE
mast.
“XP” Yagis require the coax cables exit the boom just at the rear reflector and at right angle to the
rear reflector. When mounting two antennas side by side the rear reflectors must be vertical so the
cables can exit the boom horizontally. M2 offers a ’T’ brace kit for two or more antenna arrays. It
supports the cables from each XP Yagi and routes the cables back to the main crossboom. The two
phasing or feed line represents significant weight it is best to have them, or a temporary equivalent,
attached and hanging from the rear of the boom when positioning the boom to mast plate.
11. OVERHEAD GUY SYSTEM
Locate the 3/8 x 24” fiberglass rod, the three fiberglass rod mast clamp blocks, the fiberglass mast
clamp flag and the remaining four 8-32 x 1-1/4” screws and locknuts. Attach two fiberglass rod
mast clamp blocks to the boom to mast plate with two 8-32 x 1-1/4” screws and locknuts as shown
below in the figure. Insert the 3/8 x 14” fiberglass rod into the slot formed by the two blocks and
tighten the two locknuts. Now assemble the remaining fiberglass rod mast clamp and mast clamp
flag with two 8-32 x 1-1/4” screws and locknuts. Slide the assembly onto the fiberglass rod as
shown below in the figure and tighten the two screws.
Summary of Contents for 222XP40
Page 5: ...222XP40 DIMENSION SHEET ...
