Maco Antennas v-5000 Assembly Instructions Manual - page 3
M
A
C
O
V-5000
26-33 MHz Base Station Antenna
ASSEMBLY INSTRUCTIONS
FIGURE 1
BASE ASSEMBLY
Install the Bracket P08P to the Base Assembly BA5P (See Detail 1A). It should make a 90 degree angle
with the base assembly. If not, bend the P08P until it does.
Fasten one end of the Strap R02P (See Detail 1C) to the vertical end of the base section using Clamp
W10P. Tighten snugly, but not too tight, as this may have to be adjusted.
Next join together the two Hoop Rings R01P (See Detail 1D) using #10 Hardware S21, N26, N11, and
N12.
Now fasten one end of the hoop ring assembly to Bracket P08P (See Detail 1E) and the other end to Strap
R02P using #10 Hardware S21, N26, N11, and N12.
Position the aluminum Clamp C01 on the hoop ring assembly approximately where shown (See Detail
1F) and attach the wire as shown using #10 Hardware S21, N26, N12, and N11; do not tighten. Now
measure from the center of the screw (See Detail 1D) around the outside of the ring 6-1/4” toward the
P08P end of the hoop ring assembly until the edge of the clamp is against the mark; tighten snugly.
Now make the final adjustment of Strap R02P so that the distance between the ends of the rings is 1”.
This is a vertical separation of 1”. This 1” separation is a critical dimension (ignore the screws in this
measurement) and tighten the clamp firmly.
FIGURE 2
ELEMENT ASSEMBLY AND MAST MOUNTING
To install the vertical elements T43P, T18P, T15P, and T01 use a felt tip marker and ruler, and mark 6”
from one end. Mark the T01 4” from one end. Now using the clamps and hardware as shown (See Detail
2A) slide the 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 ON
THE NEXT PAGE AND ADJUSTED TO THIS MEASUREMENT. Shorten at top Clamp W10P. This
is important to assure low SWR; however, the chart length is not sacred and may be changed to allow for
variations in construction. For frequencies falling between those shown on the chart, it is suggested that
interpolation be used to get the starting point for adjusting. Note: Overall length is the distance from
the top of part T01 to the bottom of part BA5P. This is important as variations in base construction
may cause the length at which the selected frequency has low SWR to vary.
To install the radials, first put the cast aluminum Spider R03P bracket on the Base Assembly BA5P as
shown (See Detail 2B). Install the 3/8
”
-16 x 1” Hex Bolt, Nut, and Lock Washer (S23, N19, and N20) in
the bracket. The bracket is positioned so that there is 1/2” clearance between the top of the spider and the
bottom of the Bracket P08P. Now tighten the hex bolt and nut. Next take the four T47P radials and
Clamps W58 with #10-24 x 1/2” Machine Screws and Square Nuts (S21 and N11); place the clamps with
the hardware installed over ends of the tubes. Now slide the radials onto the spider stubs (See Detail 2B)
and tighten the clamps.
Next take the four T01 radials and using a marking pen, mark 4” from one end on all four radials. Now
using Clamps W58 with #10-24 x 1/2” Machine Screws and Square Nuts (S21 and N11); insert the
marked end of the tubes to the mark and tighten the clamps (See Detail 2C). Install plastic Caps PL2 on
the ends. Exact length is not critical.
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