Maco V58 User manual
ASSEMBLY INSTRUCTIONS
5/S
WAVE
COMMERCIAL
GROUND
PLANE
WITH
RADIALS
V58
Mac0
Manufacturing
Co.
-
Division
of
Majestic
Communications,
Inc.
4091 Viscount
-
Memphis, Tennessee 38118 (901) 794-9494
MAC0
ALPHA
V58
PARTS LIST
NOTICE: ALL PARTS ARE MADE OF AIRCRAFT GRADE 6063 T-5 MATERIAL
PART
OTY
T47P 4
T43P
1
T18P 1
T15P
1
TO1 5
R03P 1
BAlP
1
ROIP
2
POSP
1
R02P
1
co1 1
W58
9
w34 1
W78
I
C13P
1
WlOP
2
s21 14
s45
1
s24 2
Nil
15
NO1 2
N26 5
N12 5
PL2 5
NO2 I
1
O.D. SIZE LENGTHDESCRIPTION
98”
.047”
36” Alum. Tubing slotted both ends
7/S” .047”
48” Alum. Tubing slotted one end
314”
.047”
48” Alum. Tubing slotted one end
518”
.047”
48” Alum. Tubing slotted one end
l/2”
.047”
72” Alum. Tubing
Cast Alum. Spider
Base Assembly
3,‘s”
.035” 17-7/S”
Hoop Rings
HARDWARE BAG
5
l/2” Bracket
WI
SO239 connector
w/
wire
1/2x1/8”
7
3/4”
Alum. Strap
318”
Stainless Steel Hose Clamp
518”
Extruded Alum. Clamp
314”
Stainless Steel Hose Clamp
7/8”
Extruded Alum. Clamp
I
.845”
Clamp Ring
Stainless Steel Hose Clamp
1
o-2-l
11’2”
Machine Screws
IO-24
”
I
Machine Screw
51
I 6” 2”
Hex Bolts
IO-24
1”
Square Nuts
5/l 6”
Hex Nuts
#lO Flat Washers
#lO
Lockwashers
.437”
Plastic Cap
-
Black
51
I 6”
.Lockwasher
Set of Instructions
CHECKLIST
WHEN ORDERING REPLACEMENT PARTS, ALWAYS GIVE PART NUMBER AND DESCRIPTION.
PLEASE NOTE:
In
an
rffotl
IO
keep
the
pnce
on
h4aco
Antennas down. we have decided not to clean up all the burrs and rough
edges
on
the parts We rrcomntrnd
IIKII
you
deburr
atid
clean
up
each
part with files. sandpaper. etc. so that they go together
easily. We are aware
1111s
needs
to be done. but
ha\
e
elected
not
to do it to save
you
the money we would have to add to the
price
of the kit for
this
service
1
V5/8
MAC0
ALPHA
V58
26
-
33 MHZ Base Station Antenna
ASSEMBLY INSTRUCTION
FlGURE
1
BASE ASSEMBLY
Install the
PO8P
Bracket to the base assembly
BAlP
with
#lo-24
x 1
7/8
hardware S45,
Nil,
N12
(ref. Detail
1A).
It should make a 90 degree angle with the base assembly. If not, bend the
PO8P
until it
does.
Fasten one end of the strap
R02P
(ref. Detail
1C)
to the vertical end of the base section using the
stainless steel worm drive clamp supplied. Tighten snugly but not too tight as this may have to be adjusted.
Next join the two hoop rings together (ref. Detail
1D)
using
#lo-24
x
l/2”
hardware S21, N26,
Nil,
N12.
Now fasten one end of the hoop ring RO 1 P to bracket
PO8P
(ref. Detail
1E)
and the other end to strap
R02P
using IO-24 x
l/2”
hardware S21, N26,
Nil,
N12.
Position the aluminum clamp CO 1 on the hoop ring assembly approximately where shown (ref. Detail
1 F) and attach the wire as shown using # 1 O-24 hardware S 11, N26,
Nl
1,
N12; do not tighten. Now measure
from the center of the screw (ref. Detail
1D)
around the outside of the ring 6 l/4” toward the
PO8P
end of
the hoop ring assembly until the edge of the clamp CO 1 is against the mark; tighten snugly. Now make the
final adjustment of R02P so that the distance between the ends of the rings is 1”. This is a vertical separation
of 1”. (Ignore the screws in this measurement) and tighten the clamp firmly.
FIGURE 2 BASE ASSEMBLY
To install the vertical elements, # T43P, T18P, TISP, use a felt tip marker and ruler,
andmark
6” from
the unslotted end. Mark the TO 1 P 4” from one end. Now using the clamps and hardware as shown (ref. Detail
2A) slide the unslotted ends into the larger sections to the mark and tighten clamps. Install the plastic cap
PL2 on the top. THE OVERALL LENGTH MUST BE SELECTED FROM THE FREQUENCY CHART
ONTHE NEXT PAGE AND ADJUSTED TO THIS MEASUREMENT. Shorten at top Clamp
WlOP.
This
is important to assure low SWR; however, the chart length is not sacred and may be changed to allow for
objects close enough to the antenna to cause the SWR to be affected. For frequencies falling between those
shown on the chart, it is suggested that interpolation be used to get the starting point for adjusting. Note:
The bottom means the very bottom!
To install the radials, first put the aluminum bracket R03P spider on the base section
BAlP
as shown
in Detail 2B. Install the 5/l 6 x 1 hex bolt,, nut, and washer in the bracket. The bracket is positioned so that
there is
l/2”
clearance between the top of the spider and the bottom of the bracket
PO8P.
This position puts
the top edge of the
R03P
spider just where the base section stops tapering and gets back to full size. Now
tighten the bolt and lock nut. Next take the four
T47P
radials and the four clamps W58 with
#lo-24
x
l/
2 screws, hardware
S21,
Nl
1; and place the clamps with hardware installed over the end of the tubing up
on a bracket stub and tighten. Now repeat with the other three radials.
Next take the four
TO1
P radials and using a marking pen, mark 4” from the end on all four radials.
Now using clamps W58 and
#l
O-24 x
l/2
screws with hardware
Sl
1 and
Nl
1; insert the marked end to the
mark and tighten the clamps (ref. Detail
2C).
Install the four Black
Plastic Caps PL2 on the ends. Exact length is not critical.
MAC0
MANUFACTURING, 4091 VISCOUNTAVE., MEMPHIS, TN 38118
For parts or information call (901) 794-9494.
V5/8
2
ASSEMBLY INSTRUCTIONS
(continued)
The C
13P
clamp is round when received. It must be made egg shaped enough to allow the nut NO 1
to go between the clamp
C13P
and the
BAlP
base assembly.
The base section can be mounted two ways:
On a mast with an outside diameter of up to 1
3/S”,
first position clamp ring
C13P
on the base and
install the
5/l
6 x 1” hex bolt and nut S24, NO 1 as shown. Turn the bolt down firmly onto the mast (ref. 2D).
On a mast with an inside diameter from 1 l/2” to 1
3/4”,
first position the clamp ring
C13P
with the
5/l
6 x 1” bolt and nut, S24, NO 1, as shown, over the base. Slide the base into your mast about 6” and tighten
the bolt down onto the base.
ADJUSTING THE STANDING WAVE RATIO (SWR)
There are only two possible adjustments to change from those in the instructions. One is the position
of the clamp CO1 on the ring. It is recommended that if the
SWRis
about the same on both ends of the band,
this adjustment be left alone. Adjust only to try to get the same SWR at both ends of bond covered.
The other adjustment is the length of the antenna. This should be changed at the top of the base
section. Loosen clamp WlOP and adjust. It is recommended that you work in l/4” increments so as to tell
if you are going in the right direction.
REMEMBER THIS ANTENNA REACTS TO EVERYTHING IT CAN SEE; THIS MEANS
THAT TREES, POWER LINES, BUILDINGS, AND OTHER ANTENNAS AT THE SAME HEIGHT
WILL AFFECT THE SWR.
FREOUENCY TO LENGTH CHART for V58 26-33 Mhz Antenna
THIS CHART MUST BE USED TO SELECT THE OVERALL LENGTH FOR THE ANTENNA.
FF=Q
Mhz
26.0
248”
27.0
240”
28.0
232
518”
29.0
225
314”
30.0
215
l/4”
31.0 209
l/8”
32.0
203
112”
33.0
198
l/4”
OVERALL
LENGTH
NOTE:
These measurements are for the overall length of
the antenna. This means the top is where the plastic
cap goes and the bottom is below the hole for the
mounting bracket
C13P.
IF THIS ADJUSTMENT IS NOT MADE
THE ANTENNA WILL NOT WORK
CORRECTLY!
NOTE: To use at other frequencies25-50 mhz, change the length.
3
R03P
STRAP
BASE
ASSEMBLY
DETAIL
1C
------_
----
r
I
1
I
I
rr
a---
-- --
a---
-- --
ii
II
I
I
II
I
I
I
I
I
I
I
I
I
I
I
I
I
I
I
I
II
----w--w---
----
BASE ASSY.
PO8P
BRACKET
S45, N12, Nll
#l
O-24 x 2” SCREW
LK. WSR.
&
SQ. NUT
I
DETAIL IA
-----v--w--------m
1
S21,,
N26,
NIZ,
1
Nl
1,
#I
O-24 x
l/2”
HOOP RINGS
I
.,
1,
I
I
IE
--a-----------*
I
,R02P
!
HOOP
RING
3
Nl
I,
#IO-24
x
l/2”
b
SCREW,FLT. WSR.
i
/
LK. WSR.,
&
I
SQ. NUT
I
I
I
I
RING,
I
DETAIL
1E
I
---a--------w
V5/8
NOTE: Wire is soldered
to connector,
SO239W
l.
--- ----
DETAIL
1D
WV
I
I
ROI
P
;
HOOP RINGNll, N12,
N2E
I
#IO-24
x SQ.
NUT, LK. WSF
;
&
FLT. WSR.
I
DETAIL
1F
------
------w--
4
ALPHA V58
FIGURE 1
/
-----
l
I
I
I
c
I
lS24, NO1
15/16” x 1”
------__------__
\
I
C13P
CLAMP
RIN;
I
T@
,
1
HEX BOLT--I
I&
NUT
I
NOTE: C13P is
I
u
I
k
BAIP
I
BASE
ASSY.;
I
I
I
1
l/4”
O.D. MAST
(NOT
FURNISYED)
I
I
I’
;
1
l/2”
O.D. MAST
I
BAIP
I
BASE ASSY.’
I
I
I
Cl3P
f
CLAMP RING
I
I
I
round, as re-
I
ceived. It must
, HEX BOLT &
be made egg
shaped enough
I NUT
to let nut NO1
fit
between C13P
I
and
BAlP
base.
I
I
I
I
I
I
I
I
Tlr
(
S24,
NO1
I
5/16”
x I”
i
I
DETAIL 2D
(NOT
FURNISlylED)
I
I
MAST MOUNTING
I
\
-----D-----B----------/
/
---------\
I
BAI
P \\
BASE ASSY.
\
2A’
4
\.
,-TO1
P
112”
TUBING
W58 CLAMP
I
I
I
I
I
I
DETAIL 2A
I
-~
TYP. VERT ELEMENT ASSY.
i
/
----------------
NOTE:
ADJUST LENGTH HERE.
-----w-s----
-_____
\
I
5/16”
x 1” BOLT
HEX NUT
&
47P
5/8”
TUBING
(TYP.
4 PLACES)
I
(TYP. 4 PLACES)
1
L
TO1
l/2”
TUBING
(TYP. 4 PLACES)
PL2-437”
PLASTIC CAP
(TYP. 4 PLACES)
i
I
I
DETAIL 2C
(
\
TYPICAL4 PLACES
I
-m-w---
---_
/
5
V5/8
ALPHA V58
FIGURE 2
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