DX Engineering DXE-4030VA-1 User manual

40/30 Meter
Dual-Band
Vertical
Antenna
DXE-4030VA-1
DXE-4030VA-1-INS-Revision 5a
© DX Engineering 2017
1200 Southeast Ave. - Tallmadge, OH 44278 USA
Phone: [phone] ∙Tech Support and International: [phone]
Fax: [phone] ∙ E-mail: [email protected]

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Table of Contents
Introduction
2
Features
2
Supplied Installation Items
2
Additional Material Needed, Not Supplied
2
Parts List
3
Suggested Parts Not Included
4
Tools Required
4
Manual Updates
4
Warning
5
Installation
5
Site Selection
5
Radial System
5
Mounting Pipe
6
Assembly
6
Radial Plate to Mounting Pipe
7
Attaching Ground Radial Wires to the Radial Plate
8
Tilt Base to Mounting Pipe
9
Vertical Base Section
10
Base Section to Tilt Base
12
Assembling the Vertical Sections
14
Mating the Vertical Sections to the Tilt Base
18
Raising The Vertical
18
Assembling the Balun Shelf and VFCC
19
Installation of VFCC to Antenna Mount
20
Feedline Connections
21
Tuning the Vertical
23
Guying a Vertical Antenna System
23
Optional Accessory Items
24
Technical Support and Warranty
27

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Introduction
The DX Engineering 40/30 Meter Vertical Antenna is a high performance 40/30 meter vertical
dual-band antenna that is tunable to operate with an SWR of 1.5:1 or less. Designed with 6063
corrosion-resistant aluminum tubing and stainless steel hardware, this antenna is very durable, free
standing, attractive, and is an optimized height of less than 30 feet.
Of course, another key to performance is a good ground radial system. 32 radials, 32 feet long are
recommended. Fewer radials will work, but with diminished results.
The 40/30 Meter Vertical Antenna includes the antenna element, insulated mounting channel,
mounting plate, patented Tilt Base, stainless steel hardware, and stainless steel element clamps.
Features
Full band coverage on 40 and 30 meters with SWR under 1.5:1 No Tuner needed
Bandwidth greater than 750 kHz with SWR under 2:1
Tunable above and below 7 MHz range for MARS and CAP frequencies
Power Handling up to 5 kW
Less than 30 ft overall height
Self Supporting Vertical Antenna
Heavy Duty design to withstand 60 MPH wind without guying
Supplied Installation Items:
DX Engineering’s patented Tilt Base - Precision laser cut from 3/16 inch thick 304 Stainless Steel,
this mounting plate is virtually indestructible. Using the included two DXE-SSVC-2P V-Clamps,
the Tilt Base is mounted to the same mast that you use for the optional radial plate. The Tilt Base
Allows for easy installation, tuning or severe weather lay-down.
Additional Material Needed but not Supplied:
Antenna Mounting - Steel mounting pipe, up to 2.0″OD, 0.25″wall thickness. The
standard 1-1/2" galvanized water pipe (with its 1.9" OD) is just fine for this application and
can usually be found at your local home building supply store.
Quik-Set Concrete - Mounting pipe installation (depending on your landscape material)
JTL-12555 Jet-Lube™SS-30 Pure Copper Anti-Seize - To ensure good connection for
aluminum element sections. Also used on the threads of Stainless Steel Hardware to prevent
galling and aid in proper tightening torque

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Parts List for the DXE-4030VA-1 40 - 30 Meter Vertical Antenna
Lower Tilt Base Assembly
Quantity
Tilt Base, patented Stainless Steel, Laser Cut, 3/16"
1
DXE-SSVC-2P V-Clamp Kit
2
Insulated Tilt Base, Extren®Mast Mount Channel
1
Tilt Base Aluminum Mounting Plate
1
1/4-20 x 2" Stainless Steel Hex Head Bolt, full thread
4
1/4" Flat Washer
4
1/4" Stainless Steel Split Washer
4
1/4" Dia. X 1/4" x 1/2" OD Aluminum Spacer
4
1/4-20 Stainless Steel Hex nut
4
1/4" Fender Washer, 1" OD
4
1/4-20 Stainless Steel Flanged Nut
2
1/4-20 Nyloc nut
4
3/8" U-Bolt x 2" ID x 3.25" leg, Saddle & Hardware Kit
2
Feedline Connection
Quantity
1/4-20 x 1" Stainless Steel Hex Head Bolt, full thread
1
1/4" Stainless Steel External Tooth Washer
2
1/4" Flat Washer
2
1/4-20 Stainless Steel Hex nut
2
Antenna Assembly
Quantity
2.00" x 0.058" x 36" Element (Slit 1 end & drilled)
1
1.875" & 1.750" x 72" Element Riveted. (Slit one end & drilled)
1
1.750" & 1.625" x 72" Element Riveted. (Slit one end)
1
1.625" x 0.058" x 36" Element (Slit one end)
1
1.500" x 0.058" x 36" Element (Slit one end)
1
1.375" x 0.058" x 72" Element (Slit one end)
1
1.250" x 0.058" x 36" Element (Slit one end)
1
DX Engineering 30 Meter Trap
1
1.250" x 0.058" x 36" Element (Slit both ends)
1
1.125" x 0.058" x 12" Element
1
Element Clamp, 1.875" - 2.00"
2
Element Clamp, 1.625" - 1.75"
2
Element Clamp, 1.375" - 1.50"
2
Element Clamp, 1.25"
3
Black Vinyl Cap.
1

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Suggested Parts Not Included
DXE-RADP-3 (US Patent 7,432,875) Radial Plate: Made from Laser Cut Stainless Steel with 20
Sets of Stainless Steel Radial Attachment Hardware. The DX Engineering Radial Plate is meant for
those having a vertical antenna and want easy, neat and effective way to connect the essential radial
wires to your antenna system for the highest efficiency and strongest signals.
DXE-SSVC-2P Stainless Steel V-Clamp. One required for mounting the optional patented DXE-
RADP-3 Radial Plate to the antenna mounting pipe of 1" to 2" outside diameter. One required for
mounting the optional DXE-VFCC-H05A Vertical Feedline Current Choke.
DXE-VFCC-H05-A - 2/5 kW Vertical Feedline Current Choke for Coaxially Fed 50 Ω HF
Vertical Antennas - Prevents unwanted RFI by eliminating feedline current and radiation allowing
all power to go to the antenna improving efficiency. Reduces noise or unwanted signals picked-up
by the feedline and overcome a less than optimal ground system The V-Clamp, used to mount the
VFCC, part number DXE-SSVC-2P, is not included and must be purchased separately.
RADIAL WIRE KITS: There are optional DX Engineering Radial Wire Kits available. DXE-
RADW-500K/BD contains a 500 foot spool of 14 gauge copper stranded wire with black PVC
insulation, 20 Terminal Lugs and 100 Steel or Biodegradable Lawn Staples. The DXE-RADW-
1000K/BD Radial Wire Kit contains a 1,000 foot spool of 14 gauge copper stranded wire with
black PVC insulation, 40 Terminal Lugs and 200 Steel or Biodegradable Lawn Staples. RADW-
20RT, -32RT or -65RT contain 20 each radial wires with 1/4" terminal attached. These kits come
in 20 Ft, 32 Ft, or 65 Ft lengths.
Tools Required
Two 7/16”wrenches, (one of them should be open-end)
1/2”and 7/16”socket and drive
3/16”and 7/64”Allen wrenches
Medium size screwdriver or 5/16”nut driver for the element clamps
Tape measure
Felt-tip marker
Manual Updates
Every effort is made to supply the latest manual revision with each product. Occasionally a manual
will be updated between the time your DX Engineering product is shipped and when you receive it.
Please check the DX Engineering web site (www.dxengineering.com) for the latest revision manual.

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WARNING!
INSTALLATION OF ANY ANTENNA NEAR POWER LINES IS DANGEROUS
Warning:Do not locate the antenna near overhead power lines or other electric light or power
circuits, or where it can come into contact with such circuits. When installing the antenna, take
extreme care not to come into contact with such circuits, because they may cause serious injury or
death.
Overhead Power Line Safety
Before you begin working, check carefully for overhead power lines in the area you will be
working. Don't assume that wires are telephone or cable lines: check with your electric utility for
advice. Although overhead power lines may appear to be insulated, often these coverings are
intended only to protect metal wires from weather conditions and may not protect you from electric
shock
Keep your distance! Remember the 10-foot rule: When carrying and using ladders and other long
tools, keep them at least 10 feet away from all overhead lines - including any lines from the power
pole to your home.
Installation
Site Selection
Select a mounting location clear from power lines, structures and other antennas by a minimum of
35 feet. Consider overhead power lines, utility cables and wires. The vertical antenna should be
mounted away from local noise sources or other metallic objects which can re-radiate noise and
affect the tuning, radiation pattern and SWR. Determine the direction you want the antenna to tilt
down and make sure there is adequate clearance (at least 35 feet). There should also be a clear
diameter of at least 33 feet from the antenna for the guying and radial systems that will extend away
from the antenna.
Radial System
The use of a radial system is a key requirement for a high performance quarter wave vertical
antenna system. With a vertical antenna system, the radials are the second half of the antenna. The
radials contribute to the radiation efficiency of the entire vertical antenna system.
At a minimum, 20 radials, each 32 feet long, should be used with this antenna. Using 32 (or more)
radials at 32 feet long is preferred and highly recommended. The extra radials help overcome
unknown poor-soil conditions, improve bandwidth, and ensure the best performance possible from
the vertical antenna. DXE-RADW Radial Wire, a 14 gauge stranded copper wire with black relaxed
PVC insulation, is suggested for the best results.

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The wire radials should placed as symmetrically as possible straight from the feedpoint around the
vertical antenna and spaced evenly, regardless of how many radials are used. Do not
cross or bunch any radial wires as this nullifies their effectiveness. If you have limited
space, put in as many straight radials as you can. The radials must be connected to the
shield of your feedline. The DXE-RADP-3 Stainless Steel Radial Plate is an ideal
optional item which provides an excellent system for attaching radial wires to your
vertical antenna system feedpoint.
Radial wires can be laid on the roots of the grass using DXE-STPL Radial Wire Anchor Pins to
hold them down. Using enough staples will ensure the wires will not be snagged by mowers,
people, or animals. Grass will quickly overgrow the radials and it will be virtually impossible to see
them. An article describing this process is available the DX Engineering website
www.dxengineering.com in the Tech Info section. Radials can also be buried just under the surface
by using a power edger to make a slit in the soil.
Mounting Pipe
Use a customer supplied thick-walled galvanized steel mounting pipe at least 4
feet long. This will allow approximately 2 feet or more to be below ground and
2 feet above ground. A thick-walled steel pipe 1-3/4" to 2" OD is recommended
with a minimum thickness of 1/8" (1/4" preferred) should be used. The standard
1-1/2" galvanized water pipe (with its 1.9" OD) is just fine for this application
and can usually be found at your local home building supply store. For
permanent mounting, use a post-hole digger to make a hole deep enough to
accommodate 2 feet of pipe and a couple inches of gravel at the bottom for
drainage. Set the pipe on the gravel, use the pre-mix concrete to fill around the
pipe, adding water and mixing as you fill or mix the concrete first, then pour in
the hole. Fill the hole until the concrete is level with the ground around it. Use a
level as you fill the hole to be sure the pipe is straight. Allow to set overnight.
Your location, landscape and ground conditions may require different
mounting solutions in order to have the steel mounting pipe and the
vertical antenna in a secure position.
Note: Steel, rather than aluminum, is much more suitable for mounting in concrete.
Aluminum will quickly corrode due to incompatibility with the materials used to
make concrete.
Note: The following assembly instructions are based on using a 2" OD Mounting
Pipe, with the optional DXE-RADP-3 Radial Plate and DXE-VFCC-H05-A
Vertical Feedline Current Choke. If you are not using these options, connection
of the radial system can be done in a number of ways but is not described here.
If not using the VFCC, connect the feedline to the antenna and the radial
system. (See the Alternate Feedline Connections section in this manual).

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Assembly
The DXE-40/30 Meter Vertical Antenna shipping box contains the vertical tubing sections, an
insulated U-channel, two 3/8" U-Bolts, saddles with hardware, a backing plate, a Tilt Base, stainless
steel element clamps, a black vinyl cap, and stainless steel hardware.
Carefully un-pack the antenna and separate the various parts. Check the parts against the parts list.
Note: JTL-12555 Jet-Lube™ SS-30 Anti-Oxidant should be used between all
antenna element sections. Jet-Lube™ SS-30 is an electrical joint compound to affect
a substantial electrical connection between metal parts such as telescoping aluminum
tubing or other antenna pieces. It ensures high conductivity at all voltage levels by
displacing moisture and preventing corrosion or oxidation.
Jet-Lube™ SS-30 should also be used on all element clamps and stainless steel
threaded hardware to provide good electrical contact, prevent galling, allowing
easier disassembly and to ensure proper tightening.
Radial Plate to Mounting Pipe
Install the optional DXE-RADP-3 Radial Plate on the 2" mounting pipe using an optional DXE-
SSVC-2P V-Clamp as shown in Figure 1. The standard 1-1/2" galvanized water pipe (with its 1.9"
OD) is just fine for this application and can usually be found at your local home building supply
store. Mount the Radial Plate so you have approximately 1" of space between the bottom of the
plate and the ground level. This will allow easy access to install the radial wire hardware. The
DXE-RADP-3 Radial Plate comes with 20 sets of stainless steel hardware for mounting the radial
wires. Mount the plate as shown in relation to how the Tilt Base is mounted. (For reference,
Figure 7 shows the completed installation.)
Figure - 1 - Optional DXE-RADP-3 Radial Plate Installation

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Attaching Ground Radial Wires to the Radial Plate
Using the 20 sets of supplied 1/4" stainless steel hardware (Bolt, Flat Washer, Star Washer, Split
Washer, Nut) connect the optional ground radial wires to the DXE-RADP-3 Radial Plate as shown
in Figure 2. Additional hardware kits are available (DXE-RADP-1HWK) that contain 20 sets of
Radial Plate Hardware.
There are optional DX Engineering Radial Wire Kits available. DXE-RADW-500K/BD contains a
500 foot spool of 14 gauge copper stranded wire with black PVC insulation, 20 Terminal Lugs and
100 Steel or Biodegradable Lawn Staples. The DXE-RADW-1000K/BD Radial Wire Kit contains
a 1,000 foot spool of 14 gauge copper stranded wire with black PVC insulation, 40 Terminal Lugs
and 200 Steel or Biodegradable Lawn Staples. RADW-20RT, -32RT or -65RT contain 20 each
radial wires with 1/4" terminal attached. These kits come in 20’, 32’, or 65’lengths.
Depending on the number of radial wires used, space their attachment evenly around the Radial
Plate. The Radial Plate will accommodate up to 60 radial wires (60 laser drilled holes), or up to 120
radials if doubled up.
Radial Wire Pattern
Figure - 2 - Radial Wire Hardware Installation

- 9 -
Tilt Base to Mounting Pipe
Install the Tilt Base to the 2" mounting pipe using the two supplied DXE-SSVC-2P V-Clamps
allowing approximately 7" clearance between the bottom of the tilt base plate, to the top of the
DXE-RADP-3 Radial Plate as shown in Figure 3. The standard 1-1/2" galvanized water pipe (with
its 1.9" OD) is just fine for this application and can usually be found at your local home building
supply store. Make sure the Tilt Base and optional DXE-RADP-3 Radial Plate are oriented
correctly for the direction you wish to tilt the antenna. When fully assembled and you are standing
in front of the antenna and can read the DX Engineering logo on the tilt plate, the antenna tilts to the
right. Refer to Figure 9 or Figure 15 for a picture showing the front of the antenna. Tighten the
clamps evenly so the length of the exposed threads is approximately equal. Any clamp should be
tightened evenly from side-to-side with an equal amount of thread above each nut.
Figure - 3

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Vertical Base Section
The base section is made up of an Extren®insulated mounting channel with hardware, a mounting
plate, two 3/8" U-Bolt assemblies and the base antenna element sections.
Using Figure 4, attach the aluminum backing plate to the back of the insulated channel. The base
hardware kit contains four 2" bolts, four flat washers, four aluminum spacers, four split washers and
four nuts. From the inside of the channel, insert a 2" bolt with a flat washer through each of the
middle four holes, through the backing plate. Put on the aluminum spacers, split washers and plain
hex nuts. Tighten firmly, but not enough to crush the insulated channel.
Figure - 4
Assemble the two bottom element sections, aligning them so the feedpoint holes match up together
as shown in Figure 5.
Figure 5
Install the 1/4-20 x 1" bolt through the feedpoint hole in the elements
from the inside, so the threads stick out. Install a star washer, flat
washer, then a standard nut. Tighten securely. Add another star
washer, flat washer and standard nut, but do not tighten. The
connection from the Vertical Feedline Current Choke attaches to this
hardware. Figure 6 shows the completed feedline assembly.
Figure - 6

- 11 -
Install the lower sections to the insulated channel using the 2 -3/8" x 2" U-Bolts, 2 saddle clamps, 4
flat washers, 4 split washers, and 4 nuts as shown in Figure 7. The base section tube should extend
1-1/4" beyond the bottom of the U-bolt clamp. When tightening, observe the split washers. When
they fully seat (flatten out), the clamp is tight enough. Any clamp should be tightened evenly from
side-to-side with an equal amount of thread above each nut.
Figure - 7

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Base Section to Tilt Base
Place the Lower Base Section into the holes of the Tilt Base and loosely install the Tilt Base
mounting hardware shown in Figure 8.
Figure - 8

- 13 -
Using a wrench or nut driver, securely tighten the two Nyloc nuts at the bottom of the Tilt Base.
Then loosen them one-half turn each. This will allow proper movement of the Tilt Base while
raising or lowering the antenna. It is not necessary to tighten these nuts more securely unless further
tilt operation is no longer required. They should not be loosened more than one-half turn at any
time.
Test the tilt function to ensure proper clearances. Standing in front of the Tilt Base, lift the antenna
base section, slide it to the right, and let it down slightly until the lower outside bolt is resting in the
pivot point. Then slowly tilt as shown in Figure 9. Make sure when you are tilting the antenna to
lift, slide to the right, and then tilt. Be careful to keep the pivot bolt resting in the pivot point.
Reverse the process when raising the antenna.
It is important to note that the lower, outside bolt becomes the pivot point while raising or lowering
the antenna. This pivot bolt MUST be retained in the pivot point. It seems natural to push the
antenna toward the Tilt Base while raising. Push up while raising, but not toward the base since this
could cause the pivot bolt to lift out of the slot and allow the mechanism to bind up and bend the
lower bolts.
The Tilt Base is not made to support the whole antenna
by itself when tilted. When the antenna is tilted over,
ensure you have some sort of table, stand, or saw horse
to set the antenna on to aid in supporting the weight.
When the antenna is in the upright position, ensure the
mounting hardware (reference Figure 8) is tightened.
Figure - 9 - Tilt Action
The antenna is mounted to the front of the Tilt Plate.
(This picture shows the antenna as if you could look through it to see the grooves in the
tilt plate. You can see a partially tilted antenna in Figure 15).
Note: A pair of sawhorses or ladders should be used to support the vertical sections during
assembly with the tilt-base and whenever the vertical is tilted down. Do not allow the
Tilt Base to support the entire weight of the vertical when horizontal.

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Assembling the Vertical Sections
Note: JTL-12555 Jet-Lube™SS-30 Anti-Oxidant should be used between all antenna element
sections. Jet-Lube™SS-30 is an electrical joint compound to affect a substantial electrical
connection between metal parts such as telescoping aluminum tubing or other antenna pieces.
It ensures high conductivity at all voltage levels by displacing moisture and preventing
corrosion or oxidation. Jet-Lube™ SS-30 should also be used on all element clamps and
stainless steel threaded hardware to provide good electrical contact, prevent galling, allowing
easier disassembly and to ensure proper tightening.
When assembling any telescoping aluminum tubing sections you should take the following steps:
1. Make sure the edges are smooth and not sharp. Deburring may be necessary, since burrs and
shavings can occur on seams as well as edges. All surfaces need to be completely smooth to
allow easy assembly of tubing sections.
Caution
Aluminum tubing edges can be very sharp.
Take precautions to ensure you do not get accidentally cut.
The raised particles and shavings that appear when the aluminum tubing is machined are
referred to as burrs, and the process by which they are removed is known as deburring.
Deburring is a finishing method used in manufacturing. Our aluminum tubing is machine cut on
both ends and machine slit on one end and you should further assure there are no ragged edges
or protrusions.
Use the DXE-22166 Slim Grip Deburring Tool, or the DXE-22600 Deburring Tool with
Extending Handle and Extra Blades for this operation.
2. Clean the inside of the aluminum tubing to clear out any dirt or foreign material that would
cause the aluminum tubing sections to bind during assembly. Do not use any type of oil or
general lubricant between the aluminum tubing sections. Oils or general lubricants can cause
poor electrical connections for radio frequencies.
3. Clean the outside of the aluminum tubing to clear any dirt or foreign material that would cause
the clamps to malfunction during assembly.
4. The use of JTL-12555 Jet-Lube™SS-30 Pure Copper Anti-Seize is highly recommended.
Jet-Lube™SS-30 is an electrical joint compound which effects a substantial electrical
connection between metal parts such as telescoping aluminum tubing or other antenna pieces.
Using Jet-Lube™SS-30 assures high conductivity at all voltage levels by displacing moisture
and preventing corrosion or oxidation.
5. When assembling the aluminum tubing sections, ensure the area is clear of grass, dirt or other
foreign material that could cause problems during assembly of the closely fitted telescoping
sections.

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Assemble the vertical sections in an area that is flat and has sufficient room for the length of the
antenna during assembly. Lay the tubing out in descending OD sizes. Orient the slits in the tubes as
shown in Figure 11.
Each element section is inserted into the next element section. Assembly is easier if the overlaps in
the tubing sections are pre-marked. A dark color felt-tip marker works well. Measure and mark
from the end of each tube without the slit using a marker so it will be clearly visible.
Locate the hardware pack containing element clamps. Refer to
Figure 12 for element clamp sizes and placement. Slide all the
clamps over each element section before putting them together.
You can lightly tighten the element clamps just below the slits in
each element section to hold them until needed. Align the clamp
screws on each section to face the same direction. At final
assembly, body of the clamp should be positioned between the slits
in the tubes and 1/8" from the edge of each tube as shown in Figure 10.
Figure - 10
Using Figure 11 and Figure 12 for dimensions, assemble the 40/30 Vertical Antenna making sure
dirt or grass does not adhere to the element sections to be joined Double-check the vertical sections
you have just assembled. They should measure 29 feet and 2 inches overall. This overall height was
determined to be the optimum length during the engineering testing. There is adequate overlap that
will allow you to adjust the length as needed for your particular installation. Refer to the tuning
section of this manual.

- 16 -
Figure 11 - Element Sections

- 17 -
Figure 12 - 30-40 Meter
Vertical Antenna Element

- 18 -
Mating the Vertical Sections to the Tilt Base
CAUTION: Attempting final assembly without proper precaution can be dangerous.
You should have someone help you steady the vertical antenna sections during
mating with the base section.
Note: A pair of sawhorses or ladders should be used to support the vertical sections during
assembly with the Tilt Base and whenever the vertical is tilted down. Do not allow
the tilt-base to support the entire weight of the vertical when horizontal.
With the base section in the tilted position, mate the vertical sections to the base tube section by
sliding the lower element section of the vertical antenna over the previously assembled base section
elements (refer to Figure 5). Slide it in until it makes contact with the element section nested inside
the bottom section (4 inches). See Figure 12.
Note: Using a small amount of Jet-Lube™SS-30 on the element sections will make the
fit easier and help provide a positive electrical contact between the elements.
Slide the appropriate element camp down to the edge of the bottom section, between the slits, and
tighten. Install the rest of the element clamps.
Raising the Vertical
DANGER: Make sure you have not inadvertently located the
antenna underneath power lines.
Residential power lines are often less than 40' high.
Contact With Any Power or Utility Lines Can Be Lethal !
The Tilt Base certainly makes it easier however, this antenna can be challenging to put up the first
time or with gusty winds. If you have properly laid out your optional guy system in advance, it will
help keep the vertical stable as you raise it –and stop you from
going beyond vertical at the apex of the lift.
Make sure the optional guy ropes are in the clear before you begin.
While raising the antenna, keep a constant pulling pressure away
from the Tilt Base. This will ensure that the pivot point bolt will not
jump out of the pivot slot and cause the tilt mechanism to bind up
and bend the bolts.
Starting from the top of the antenna, walk it up slowly using an overhead hand-over-hand motion,
maintaining a slow and steady pace.

- 19 -
Once the antenna is vertical, lift and slide the antenna to the left toward the Tilt Base mounting pipe
to allow the two parts of the Tilt Base to line up and drop down into the slots. Lightly tighten the
top flange nuts on the Tilt Base to hold the antenna.
Note: As you raise the antenna to the vertical position, it’s
important to maintain the parallel alignment
between the antenna mounting channel and the Tilt
Base backing plate to minimize binding. Make sure
the lower tilt-base bolts are never excessively loose
before raising. They should be first tightened
securely and then backed off no more than 1/2 turn
Once the antenna is fully raised, tighten the tilt base hardware (Top two Nyloc nuts and two flange
nuts, bottom two Nyloc nuts).
Assembling the Balun Shelf and Vertical Feedline Choke
Using the 10-24 hex bolts, flat washers, split washers, and hex nuts, assemble the optional DXE-
VFCC-H05-A Vertical Feedline Current Choke to the Balun Shelf and Balun Shelf Bracket as
shown in Figure 13.
Figure 13