This two-element, tri-band quad operates on 10, 15,
ground and hoist it
position as sho
and 20 meters. The choice to two band settings:
phone and CW, presents low VSWR across each
segment with broadband characteristics.
Heavy swaged aluminum tubing speraders offer
strength and durability, and are free of pattern
distortion effects. The spreaders are broken at
strategic electrical points with high impact-cycolac
insulators and are completely free of "RF" an d pattern
The Driven Element is at DC ground to eliminate
static noise and to provide lightning protection .
Separate pretuned gamma matches offer isolation.
The closed loop feature decreases static build-up.
Taper swaged tubing and vertix-feed combine to
provide mechanical stability. Th e cast alu minum tilthead boom gives strength and offers a choice of mast
diameters.
The preset speader arms are drilled for easy
assembly. You only need to measure the element
One transmission line feeds all thre e bands. RG-8/au
offers minimum cable loss and full legal power
capabilities. If your cable run is less than 60 feet and
power doesn't exceed 200 watts use RG-58/au.
Decide the best height for your installation . Heigh t
above the ground determines the angle of radiation
(the lower the angle, the greater the range).
For best results, install the Hy-Qu ad at least 45 feet
above the ground and 8 to 10 feet above your tower
or rotator.
The site should be clear of any objects of a large,
conductive mass which tend to sh ift an tenna
resonance, affect the VSWR, and distort the radiation.
NOTE: To prolong the life of this product in or aroun d
coastal areas, it is recommended that all hardw are be
encapsulated with a silicone rubber compoun d such
as Dow-Corning silastic rubber or GE silicon e sea l to
prevent atmospheric deterioration.
Electrical
Input impedance (nominal)…………………52 ohms
Forward gain… 10 meters -8.7 dB; 15 meters -8.5 dB;
20 meters -8.3 dB
Front-to-back ratio …………………… 25 to 35 dB
depending on electrical height
Maximum power input ……………….. 1 kw AM, 4 kw
P.E.P VSWR at resonance ................ 1.5:1 or better
Lightning protection .................... DC ground
Study the manual and familiarize yourself with the
NOTE: When unpacking
of all
inside
smaller
articles are sometimes put
tubing
tubing
etc.). To conserve space, these smaller
your antenna,
check the
for parts (clamps, insulators,
the larger pieces.
inside
NOTE: All tubing supplied with the Hy-Quad is
designed to telescope together. It is held in place with
two #10 x
3
self-tapping screws. All tubing lengths
/8"
are predrilled for your convenience. For optimu m
operation, all element-to-wire dimension s should be
followed by ±
1/8"
.
The size of this antenna requires consideration as to
how you are going to get it to the top of your tower.
The tilt-head boom-to-mast bracket (see Figure 35)
facilitates assembly of the an tenna in halv es. Th ere
are two installation methods :
Method 1 - Completely assemble the antenn a on the
into
wn in Figure 1.
Method 2 - Assemble the antenna on the groun d in
halves, then hoist each half up the tower and attach
to the boom-to-mast bracket on th e tower.
The best method is to assemble the antenna in halv es
on the ground. When this is done the reflector and
driven element spreaders must be in the same plane.
Attach the boom to the boom-to-mast br acket an d
assemble the sperader arm to boom bracket on the
boom. MAKE SURE THE DRIVEN ELEMENT AND
REFLECTOR BRAC K ETS A RE IN THE SA ME PLAN E. Now
separate the antenna in halves and complete th e
e. Driven Element Spreader Arm Assembly Horizontal
1
5
y
p
g
f. Assembly of Spreader Arms to Boom Sections
g. Compression Clamp
Assembly h. Element Ass embly
i. Phone By-Pass
Wires j. Element
Tension
k. Gamma Match
Assembly I. Boom
Horizontal
( ) Both ends of the horizontal spreader arms are
assembled in exactl y the same way. For s im plicit y, the
assembly procedures for only one end will be
( ) Insert the 1
tube. Align the hol es and secure the tubes using #10
3
x
self tapping screws.
/8"
x 48" tube into the
/8"
1'/4"
x 14'
/6"
( ) Select the spreader arm insulators and attach them
loosel
on the end of the
( ) Select the tube measuring 1
into the s
reader arm insulator.
1 1/8"
x 48" tube.
x 10" and insert it
1/8"
The assembly sequence will be described in the
following order:
a. Reflector Spreader Arm Assembly Horizontal
b. Reflector Spreader Arm Assembly Vertical
c. Driven Element Spreader Arm Assembly Top
Vertical d. Driven Element Spreader Arm Assembly
Bottom Vertical
CAUTION
The 10" piece
that allows a 2" space bet ween it and the
depth
48"
length of 1
of 1
1
1
tube must be inserted to a
/8"
tube. Once this 2"spacing
/8"
dimension is assured, securely
insulator sections to
ether using the 1/4" x 3/4"
tighten
the
This concludes the assembly of half the horizontal
pping
reflector spreader arm. The other half is assembled in
exactly the same way.
Vertical
( ) Select a 1'/4" x 14'
5
/6' tube and a
x 48" tube.
1'/8"
Do not interc hange the ends. The ho le diameters are
different and the small holes must be inside the large
tubes. Align the holes and secure the tubes using #10
( ) Select the 1 " x 36
the smaller drilled holes into the
the holes an d secur e usin g #10 x
( ) Select the
%e"
end into the 1 " x 36
secure with #10 x
() Select the
end into the
%8"
using the #10 x
5
tubes and slip the end with
/8"
x 48" tubes. Align
1'/8"
self tapping
3/8"
x 24" tubes and slip the unswaged
5
tubes. Align the holes and
/8"
self tapping screws.
3/8"
5
x 41'5/2' tubes and slip the drilled
/8"
x 24" tubes. Align the holes and secure
3
self tapping screws.
/8"
Driven Elemen t
Top Vertical Spre ader Arm
Refer to Figure 4. Select a 1'/4" x 14'
x 48" tube. Slip the
/8"
x 48" tube into the end of
1'/8"
5
tube and a 1'
/,6"
the 1'/4" tube. Align the holes and secure using the
( ) Select a 1 " x 32
3
tube and s lip t he en d w ith the
/4"
smaller drilled holes into the 10" piece of 1
Align the holes and secure using the #10 x
ta
( ) Select the
smaller holes into the 1 " x 32
and secure using #10 x
( ) Select the
into the
using the #10 x
screws.
x24" tu be an d sl ip t he en d w ith
%e"
5
/8"
x 24" tube. Align the holes and secure
%e"
3
x 32
/8"
self tapping screws.
3/8"
3
tube. Align the holes
/4"
self tapping sc rews.
3/6"
tube and slip the drilled end
-
1/8"
3
/8"
tube.
self
( ) Next, select the 1 " x 36
5
tube, which is drilled for
/8"
attachment of a tombstone insulator, and insert into
the
#10 x
() Select the
36
( ) Next, select the
x 48" tube. Align the holes an d secure us ing
1'/8"
self tapping scr ews.
3/8"
x 24" tube and insert into the 1 " x
5
tube. Align the holes and secure using #10 x
/8"
%e"
5
/8"
x 35
3
tube, which is also
/4"
drilled for attachment of the tombstone insulator, and
insert into the
holes line up. The hole for the tombstone insulator in
5
this
tube must line up with the tombstone insulator
/8"
hole in the 1 " x 36
x 24" tu be . Tur n th e tu be so the
%8"
5
tube.
/8"
( ) This completes assembly instructions on the top
driven element assembly. This should now be marked
"Top DE" and set aside for future use.
Bottom Vertical Spreader Arm
( ) First, select the
1'/4"
tube, Insert the drilled end of
the drilled end of the 1'/4
( ) Select the 1 " x 36
end into the 1
1
5
tube. Align the holes and fasten
/8"
secur e ly , using t h e # 1 0 x
5
x 14'
tube and insert the drilled
/8"
3/e"
tube and a
/,6"
diameter tube into
1'/8"
"
diameter tube. Align the
self tappin g scr ews.
1'/8"
x 48"
Align the holes and fasten securely.
3
/8"
( ) Select the 78" x 24" tube and insert it into the 1 " x
g
"
5
y
y
p
g
p
g
g
3
g
g
/
5
g
y
y
(
g
y
5/8"
36
tube. Align the holes and secure using #10 x
( ) Finally, select the 5/8" x 353/4" tube and insert in the
"
78
tube. Again, ali gn th e ho le s and faste n secu rely
usin
the same type hardware as before.
3
/8"
( ) Mark this spreader arm assembly "Lower DE" and
Horizontal Spreader Arm Assembly
The last spreader arm ass embly is the hor izontal arm s
of the driven element. These to o will be assem bled in
halves. Both halves are identical, therefore, assembly
( ) Select the 1'/4
Insert the end of the 11/8" x 48"tube into the drilled end
1'/4"
of the
securel
using the #10 x 3/8" self tapping screw.
x 14'
5
/,6"
/,6"
x 14'
tube and 1'/8" x 48" tu be .
tube. Align the holes and fasten
( ) Select the spreader arm insulators and attach
loosel
on the end of the 11/8" x 48" tube.
( ) Select the tube measuring 11/8" x 14" and insert into
the s
reader arm insulator.
Fi
ure 5. Spreader Arms Grouped and Labeled
NOTE: To aid in this part of the assembly, a 3" dia. x 3'
length of pipe can be driven in the ground about 1 foot.
This will hold each boom section in a near vertical
osition while the spreader arms are assembled.
( ) Select the eight spreader element brackets and
loosely assemble using '/4-20 x
3/4"
bolts, nuts, and
lockwashers, '/4"-20 x V anchor bolts and square nuts,
as shown in Fi
ure 6.
CAUTION
The 14" piece of 1
depth leaving a 2" space between it an d the 48"
length of 1
dimension is assured, securely tighten the
insulator sections together, using the
( ) Select the 1" x 28
1
/8" tube m ust be inserted to a
1
/8" tube. Once this 2" spacing
1
/4" x 3/4"
/4" tube and slip the en d wi th th e
smaller holes into the 14" piece of 1'/8" tube. Align the
holes and secure usin
( ) Select the 78" x 24" tube and slip the end with the
smaller drilled holes into the 1 " x 28
holes and secure usin
( ) Select the
into the 78
usin
#10 x
/8" x 283/8" tube and slip the drilled end
"
x 24" tube. Align th e ho les and se cure
3/a"
self tapping screws.
#10 x 3/8" self tapping screws.
3
/4" tube. Align the
3
#10 x
8"
self tapping screws.
( )This complete s the a ssembly of half the horiz ont al
driven element spreader arm. The other half is
assembled in exactl
the same way.
( ) Select a 2" x 4778" of tubing and stick the end with
5
the
/16" dia. hole into the piece of 3" pipe driven in the
round previously. This is one half of the boom.
ure 6. Boom-to-spreader Arm Assembl
Fi
Assembl
of Spreader Arms To Boom Sections:
( ) Place two pair of loosely assembled spreader
( ) At this point, 8 spreader arms should be properly
labeled and grouped together as to Reflector or Driven
Element
four in each group) as shown in Figure 5.
element brackets in position on the end of the boom as
shown in Figure 7. Place the 2" caplugs on the ends of
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