ASSEMBLY INSTRUCTIONS
FIGURE 1. BOOM-TO-MAST PLATE ELEMENT ASSEMBLY
Mark the centers of the
O.D. x 72” boom (T28) and the boom-to-mast plate
Attach
the plate to the boom as shown in Detail
using
U-Bolts (UOZ), Saddles
and
Nuts
Lk. Washers
N02). Do not over-tighten the U-Bolt as doing so may crush and weaken the boom.
Next mark the centers of the (4)
O.D. x 72” slotted tubing
and slide a boom-to-element
mount onto each piece of tubing to the center. Now assemble these onto
the boom as shown in Detail
paying particular attention to the element spacing.
Make a mark
from one end of each of the
O.D. x 72” tubing
Using clamps
with
screws sq. nuts (S21,
insert the
tubing into the slotted ends of the
tubing
to the mark and tighten the screws. (Ref. Detail
Driven Element) Now check the overall length of both
elements for
and then place the plastic end caps (PL2) on each element tip.
Make a mark 2” from the plain end of each of the (4) fiberglass arms
No insert the arms to
the mark into the
tubing on the reflector end using the clamps
in the same manner as above. (Ref. Detail
FIGURE 2. REFLECTOR ASSEMBLY MAST MOUNTING
The length of the reflector wire is critical. The easy way to get it right is to drive two nails in
a board exactly 19 ft. 6 in. apart. Stretch the wire around the nails to the tightness desired when installed
on the spreaders. Then splice the wire and solder. When installed the exact length of each side is important.
REMEMBER: The Reflector dimensions are only preliminary. Change to get equal sides of 9’ 9”. Fiberglass
length is not critical, however the equal wire length of 9” 9” is very critical. Remember the tightness when
installed should be the same as when stretched and spliced
Next loosely assemble the
x
screws, flt. washers, lk. washers &nuts (S2 1,
N12, N26)
onto the lugs of the (4) fiberglass arms as shown in Detail 2A.
String the wire around the arms so that it is caught between the lugs and the flatwasher at the
marks, with the loose ends at the bottom as shown and tighten the screws. Bring the ends together and line
up the marks that are 2” from each end. Now twist the loose ends together solder as shown. (Ref. Detail
Adjust each fiberglass
so that the reflector wire becomes taut and each leg of the square is
9”. A slight natural bowing of the fiberglass arms is normal. This will not affect normal operation of the
antenna as long as the lengths of wire are correct. (Ref. Detail 2A)
The Y-Quad may be mounted on a
O.D. mast using U-Bolts, Saddles Hardware as shown
in Detail 28. If mounted on a guyed tower break up the guys every 3 feet by using egg insulators in the guy
line for the top 20 feet of the guy cables. Also, the guys should be located at least 12 feet below the level
of the boom. Although it is very desirable to mount the antenna on a mast so that the elements clear the top
of the tower, this should not be attempted unless you are certain that your installation is sturdy enough.
Experimentation has shown little, if any, affect on the operation of the antenna by mounting it 2 feet above
the top of the tower, or by mounting a rotator so that it lies between the vertical elements. The first
consideration should always be the mechanical stability of the antenna.
Y QUAD
2
