Mounting Information; Stacking Information - M2 Antenna Systems 222XP40 Assembly Manual

222XP40 ASSEMBLY MANUAL
12. Using the Dimension Sheet as a guide, install the two 1/4" eyebolts into the top side of the 1" front
and rear boom sections. Align the eyes with the boom and secure with 1/4-20 locknuts.
13. Install the two turnbuckles into the fiberglass rod mast clamp assembly as shown above in the fig-
ure. Adjust threads until just one or two show inside turnbuckle body. Attach one end of the KEV-
LAR cord to the rear eyebolt by taking two wraps through the "eye" and finishing with two half-
hitches or a square knot. Adjust to leave 2" to 4" of cord after knots. Attach the other end of the
cord to the front eyebolt in the same way. Equalize excess cord at the fiberglass riser and cut. Take
rear cord end and make two wraps through rear turnbuckle eye, then pull line taut until the rear
boom end levels and knot as above. Repeat for front cord and turnbuckle. If you cannot straighten
the boom by adjusting the turnbuckles, open the turnbuckles again as before with no threads show-
ing inside the turnbuckle body. Loosen the KEVLAR knots and pull taut again, perhaps even lifting
the boom ends slightly. Re-tie the knots and final adjust the boom to level with the turnbuckles. Use
solid #12 awg copper wire or equivalent to "safety wire" the turnbuckles to prevent loosening.
NOTE: Kevlar has a core of Arimid fiber with a woven jacket of Dacron for protection from
abrasion. Arimid fiber does not stretch and both materials are UV stabilized for decades of intense
sun with no degredation. They are also impervious to salt spray and acid rain. Only fire will make
KEVLAR fail. Philistran is another type of Arimid fiber guy cord and can be used interchangeably in
this application. (It just costs more).

14. MOUNTING INFORMATION

(M2 offers 2" X 1/4" wall FIBERGLASS TUBE in various lengths and we make a wide range of "H"
frames for both "Xpol" and linear Yagis).
MOUNTING THE 222XP40 ON A METALLIC MAST WILL GREATLY DEGRADE ITS
PERFORMANCE IN THE PLANE OF THE MAST, THEREFORE THE ANTENNA SHOULD BE
MOUNTED ON A NON-CONDUCTIVE SUPPORT EXTENDING FROM THE ANTENNA AT LEAST
36". MOUNTING THE ANTENNA WITH THE ELEMENTS IN AN "X" CONFIGURATION WITH
REFERENCE TO A METAL MAST, DEGRADES PERFOMANCE LESS, BUT IN BOTH PLANES,
NOT JUST ONE.
REMEMBER ALSO THAT THE FEEDLINES MUST EXIT AT THE REAR OF THE ANTENNA! If you
have not already done so, install your antenna on your non-conductive mast.
antenna at the boom-to-mast plate will tension the KEVLAR cord and will allow turnbuckle adjust-
ment for a straight boom. Cut any excess length of cord, leaving just 2" to 4". To prevent fraying,
melt the ends with a match or torch and tape back to main line. NOTE: You may notice that the
boom tips may drop slightly beyond the eyebolts. This is normal and in no way will affect the
performance of the antenna.

15. STACKING INFORMATION

Optimum stacking for two or more 222XP40 antennas either horizontally or vertically is 144" (12
feet / 3.65m) from boom center to boom center. This yields the maximum theoretical gain, with clean
patterns. Reduced stacking distance of 132" is acceptable. When stacking 4 or more antennas use
the same figure, 144" when stacking high or wide.
HORIZONTAL and VERTICAL driven element blocks are on the SAME SIDE of the boom and NOT
MIRROR IMAGE to each other. M
dividers, depending upon your system requirements.
If you need any additional information or HELP with your system, PLEASE CALL US!
2
also offers low loss LMR400 phase lines and 2 or 4 port power
We also have Hints and tips on our Web Site
THIS COMPLETES THE ANTENNA ASSEMBLY.
Be sure all antennas are oriented so the
Supporting the