Step-7: Using the following items, complete assembly of upper resonator.
1
----------
80-meter radial ring assembly (as completed in Step-3)
1
MA8040VBF
1/2” OD x 24” resonator stub
1
MA8040VBG
3/8” OD x 24” resonator stub
1
MA8040VBH
1/4” OD x 24” resonator stub (solid rod)
1
055105
1/4” vinyl end cap
3
030407
Small worm clamp
1
010123
1-1/2” x 8-32 screw
1
902428
Braid strap
1
156336
1/2” ID 80-meter resonator-stub bushing
[ ] Insert
1/2” tube (BF) into
the 1/2” ID bushing and align screw holes
(
A
).
[ ] Install the bushing and tube inside fiberglass resonator tube. Align all screw holes (
B
).
[ ] Slide 80-meter radial-ring assembly over outside of resonator tube, position
with screw holes aligned (
C
).
[ ] Install 1-1/2”
screw
at (
D
)
and capture coil-lead lug at bottom. Secure
with nut and tighten firmly.
[ ] Find braid strap and nip eye off one end, as shown
at (
E
).
[ ] Using existing hardware on radial ring, attach braid strap at (
F
) and secure in place.
[ ] Install small worm clamp on resonator tube and use to secure nipped end of braid.
[ ] Install small worm clamp on end of 1/2” tube
BF
, insert 3/8” tube
BG
and secure (
G
).
[ ] Install small worm clamp on end of 3/8” tube
BG
, insert 1/4” rod
BH
and secure (
H
).
[ ] Slip 1/4” vinyl tip cap on end of 1/4” rod
BH
at (
I
). Resonator will be set to length later on.
worm clamp
B
cut
braid strap prep
worm clamp
vinyl cap
C
insert and align
B
G
H
I
E
F
A
D
align all
holes
1/2" ID bushing
tube BF
80-M
coil
BF
BG
BH
Figure-7: Upper Resonator
( 80-meter) Assembly
Step-8: Using the following items, assemble antenna radiator.
1
MA8040VBB
Aluminum splice tube, 12” x 1-1/4”
1
MA8040VBC
Aluminum radiator section-2, 72” x 1-3/8” OD
1
MA8040VBD
Aluminum radiator section-3, 72” x 1-1/4” OD
1
MA8040VBE
Aluminum radiator section-4, 72” x 1-1/8” OD
3
030412
Large Worm clamp
[ ] Place a worm clamp on one end of tube
BC
(72” x 1-3/8”).
[ ] Find 12” x 1-1/4” splice tube
BB
. Measure off 6” and mark.
[ ] Insert
BB
6” inside
BC
,
secure with worm clamp.
[ ] Place a worm clamp at far end of tube
BC
.
[ ] Find 72” x 1-1/4” tube
BD
and locate the un-slotted end. Measure off 6” and mark.
[ ] Insert
BD
6” inside
BC
and secure with clamp.
[ ] Place a worm clamp on slotted end of
BD
.
[ ] Find 72” x 1-1/8” tube
BE
and locate
the un-slotted end. Measure off 6” and mark.
[ ] Insert
BE
6” into BD and secure with clamp.
6' x 1-3/8"
6' x 1-1/4"
6' x 1-1/8"
(insert 6")
(insert 6")
17' 6"
splice
tube
(insert 6")
BB
BC
BD
BE
Figure-8:
Vertical Radiator Assembly
Step-9:
Using the following items, install 40-meter capacitive-hat rods.
1
----------
Pre-assembled resonator section (from Step-7)
4
226442
Radial rod stock, 0.1” x
25”
4
056249
Vinyl end caps
[ ] Loosen the 40-meter radial-clip hardware.
[ ] Install the four 25” rods, one in each clip opening. Tighten
securely
to capture all four rods.
[ ] Install a plastic end cap on each protruding rod end (lubricate with soap, as needed, to install).
25" rod
25" rod
25" rod
Install pla
s
tic tips (x4)
25" rod
Figure-9:
Installing 40-meter Radial Rods
Step-10: Using the following items, install 80-meter rods on resonator assembly.
8
226443
Radial-rod, 0.1” x 31”
8
056249
Vinyl end cap
[ ] Install a vinyl end cap on one end of each rod (lubricate with soap, as needed, to install).
[ ] Loosen radial-ring hardware and install rods, as shown in
Figure-10
.
[ ] Use
maximum extension
for best low-end tuning, minimum for best high-end tuning. Tighten hardware.
Insert rods
Maximum Rod Extension
Minimum Rod Extension
Figure-10:
Inserting and adjusting radial rods
Step-11: Construct a base support.
Important Installation Site Safety Considerations:
1.
No part of the antenna should contact
overhead tree branches or foliage.
2.
Antenna must be well clear of all power wires if accidentally toppled in any direction.
3.
RF-energized surfaces
must be inaccessible to accidental contact by people or pets.
4.
RF exposure of humans in nearby occupied areas should not exceed FCC guidelines.
5.
Other feedlines, masts, towers,
etc. must be sufficiently far away to avoid detuning.
The MA8040V requires a stable base
support
(owner supplied). Any suitable support may be used, but the
antenna was especially designed to drop into 1-1/2” OD thin-wall steel galvanized conduit. This tubing may
be either driven into the ground or set into a posthole and captured in concrete (
Figure-11A
). Conduit and
