DX Engineering DXE-MBV-ATU-1 Manuale utente
Multi-Band Vertical Remote
Antenna Tuner Add-on Kit
for 43 Foot Multi-band Vertical Antennas
80-10 Meters
DXE-MBV-ATU-1
DXE-MBV-ATU-1-INS Revision 3e
© DX Engineering 2017
1200 Southeast Ave. - Tallmadge, OH 44278 USA
Phone: (800) 777-0703 ∙ Tech Support and International: (330) 572-3200
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Introduction
The DXE-MBV-ATU-1 Multi-Band Vertical Remote Antenna Tuner Add-on Kit for 43 Foot
Multi-band Vertical Antennas is a remotely mounted automatic tuner system which also features
proper feedline isolation for a 43 foot vertical antenna. The DXE-MBV-ATU-1 is the perfect
solution for the DX’er running modest power (200 watts maximum) who wants maximum
performance on any 43 foot tall multi-band vertical antenna. Now you can hear and work the weak
ones. Just install on your vertical antenna mount and start operating. NO MANUAL TUNING!
Now you can have full performance 80-10 meters with no mismatch coaxial cable loss! A no
compromise system! A Bias Tee is included with this special package for supplying the 12 Vdc
power through the coaxial cable from your radio shack to the remote tuner.
This automatic antenna tuning system, mounted at the base of a ground mounted vertical
antenna works on all DX Engineering, Zero-Five, MFJ and Hy-Gain 43 foot vertical antennas.
Also works on your own vertical antenna homebrew creation!
Features:
MFJ-927 Remote IntelliTuner™ - 200 Watts maximum
DXE-FCC050-H05-A Feedline Current Choke: isolates the feedline from the antenna
DXE-SSVC-2P Stainless Steel Mounting V-Clamp
Custom Laser Cut Stainless Steel Bracket for Tuner and Feedline Current Choke
MFJ-4117 Bias Tee Power Injector for +12 Vdc: power supplied on coaxial cable, no
control cable needed
RG-8X Coaxial Cable 2 ft long with PL-259 Connectors
3 Tinned Copper Braids, 1" wide for connection to your optional Radial Plate
Feedline wire - 14 ga insulated stranded copper with Ring Terminal attached.
Supplied Items:
Mounting Base - Precision laser cut from 1/8" 304 Stainless Steel, this mounting plate is virtually
indestructible. Mounts to the same mast used for the optional DXE-RADP-3 Radial Plate.
DXE-FCC050-H05-A -Feedline Current Choke, 2 kW, for Coaxially Fed 50 Ω Antennas with
Stainless Steel hardware to provide isolation between the feedline and the antenna.
DXE-SSVC-2P - Stainless Steel V-Clamp for 2" OD steel mounting pipe, V-bolt with Stainless
Steel hardware.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.
DXE-8XDX002 - RG-8X Coaxial Cable 2 ft long with PL-259 Connectors
Auto Tuner Radial Connection Kit - Three 1" wide x 6" long pre-drilled tinned copper braids for
connection to the vertical antenna radial system through the optional DXE-RADP-3 Radial
Plate. Includes the stainless steel hardware for attachment to the mounting base.
MFJ-927 Remote IntelliTuner™ will tune 80 through 10 meters, 200 Watts maximum
MFJ-4117 Bias-Tee Power Injector for +12 Vdc with DC switch.
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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.
Parts List
Qty
Description
Where Used
1
Stainless Steel Laser Cut Mounting Bracket
Shelf for tuner and FCC
1
DXE-FCC050-H05-A Feedline Current Choke
Installed on Mounting Bracket
1
DXE-8XDX002 Two Foot Coaxial Cable
From MFJ Tuner to DXE-FCC050-H05
1
MFJ-927 Remote IntelliTuner™
Installed on Mounting Bracket
1
MFJ-4117 Bias-Tee (included with MFJ-927)
Installed in customer radio room for routing power to the
MFJ-927 Remote IntelliTuner™
1
DXE-SSVC-2P Stainless Steel V-Clamp
Mounting Bracket to customer supplied mounting pipe
3
6" Braided Strap
2 - from bracket to optional DXE-RADP-3 Radial Plate
1 - from Tuner Ground Lug to Mounting Bracket
1
18" Feedline Wire with Ring Terminal attached
From Tuner to customer's Antenna Feedline Connection
2
1/4" x 1" Stainless Steel Hex Head Bolt
Mounting Braided Straps to Mounting Bracket
2
1/4" Stainless Steel Hex Nut
Mounting Braided Straps to Mounting Bracket
2
1/4" Stainless Steel Split Washers
Mounting Braided Straps to Mounting Bracket
2
1/4" Stainless Steel Flat Washers
Mounting Braided Straps to Mounting Bracket
3
1/4" Stainless Steel Star Washer
Mounting Braided Straps to Mounting Bracket
1
#10 Stainless Steel Tooth Lock Washer
For Braided Strap at MFJ-927 Tuner Ground connection
8
6-32 x 3/8" Stainless Steel Hex Head Bolt
Mounting MFJ Tuner and DXE FCC to Mounting Bracket
4
#6 Stainless Steel Tooth Lock Washers
For Mounting FCC to Mounting Bracket
4
#6 Stainless Steel Flat Washer
For mounting FCC to Mounting Bracket
Figure 1
DXE-MBV-ATU-1 Multi-Band Vertical Remote Antenna Tuner Add-on Kit
parts shown separately and installed with optional DXE-RADP-3,
DX Engineering Multi-band 43 foot Vertical Antenna with
DX Engineering Tilt Base on a customer supplied Mounting Pipe
with customer supplied coaxial cable connected to antenna system.
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Suggested Parts Not Included
DXE-RADP-3 Radial Plate:
Made from Laser Cut Stainless Steel with 20 Sets of Stainless Steel Radial Attachment
Hardware. The DX Engineering Radial Plate (patented) is meant for those of you having a
vertical antenna and want an easy, neat and effective way to connect those essential radial
wires to your antenna system for the highest efficiency and strongest signals.
DXE-SSVC-2P Stainless Steel V-Clamp for steel pipe:
One required for mounting the optional DXE-RADP-3 Radial Plate to the antenna mounting pipe of 1" to 2"
outside diameter. This V-Clamp is made in one size that fits Steel tubing or pipe from 1 to 2'' O.D. as used in
antenna construction. The supplied V-bolt is long enough to attach tubing to thick plates and is made with
anti-corrosive properties. The special Stainless Steel saddle has serrated teeth will clamp to the
pipe securely by biting into the surface. For this reason, it is not recommended for softer aluminum
tubing or pipe. Ideal for fastening a radial plate and antenna mounting to a steel pipe.
Used to clamp 1 to 2'' (OD) steel tubing or pipe
Designed for attachments that don't require resistance to torque
V-bolt and saddle made from high-strength 18-8 stainless steel
The use of an anti-seize compound is HIGHLY recommended to achieve proper torque and prevent galling.
DXE-PSW-12D1A - AC Adapter 12VDC/1000mA -
The DXE-PSW-12D1A is an AC Wall Transformer Adapter to furnish 12 Volts DC at 1000
mA from 110 Vac 60 Hz input, fused output. It features a standard 2.1 mm plug connection
for 12 Vdc. Outer connection is GROUND Center Pin is input for +12 VDC.
JTL-12555 Jet-Lube™SS-30 Pure Copper Anti-Seize 12555
Jet-Lube™SS-30 Pure Copper Anti-Seize is the top choice of engineers and technicians in government,
industry and leading Amateur Radio contest stations, for protecting mechanical assemblies of
aluminum tubing, general hardware and copper grounding systems. On bonded metal surfaces Jet-
Lube™SS-30 assures electrical and RF conductivity while preventing oxidation and corrosion.
Surpassing the capabilities of other aluminum anti-oxidants, the wide temperature range of Jet-
Lube™SS-30 prevents long-term drying and caking, and allows easy disassembly and effortless
cleaning of parts. An environmentally preferred thread lubricant and conductive termination
compound, Jet-Lube™SS-30 helps keep your equipment in serviceable condition. It contains a high
concentration of copper flakes, a requirement for heavy loads or compression; controlled frictional
characteristics allow the surfaces of nuts and bolts to be tightened to their design torque
specifications. This anti-seize product assures full hydraulic efficiency by allowing the metal surfaces to slide
over each other without damaging metal-to-metal contact. Jet-Lube™SS-30 is also designed to work as a
similar and dissimilar component between two metal surfaces to prevent seizing and galvanic action. The SS-
30 compound formula improves conductivity and ground continuity - and will not melt in high temperatures.
Jet-Lube™SS-30 Pure Copper Anti-Seize Features include:
* Meets MIL-PRF-907E spec
* K-factor: 0.13
* Service rating: -65 degrees F (-54 degrees C) to 1800 degrees F (820 degrees C)
* SS-30 Resistivity (ohm-CM x 108) 5
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Tools Required
1/4" Nut Driver or 1/4" socket with extension for mounting the MFJ Tuner and
DXE-FCC050-H05 to the Mounting Bracket
5/16" and 3/8" Nut Drivers or open end wrenches to mount the DXE-FCC050-H05
to the Mounting Bracket
Two 7/16" Nut Drivers or open end wrenches to mount Ground Braids to the
Mounting Bracket
1/2" deep well Nut Driver or open end wrench to attach DXE-SSVC-2P V-Bolt hardware
Assembly
Note: The assembly of the DXE-MBV-ATU-1 Multi-Band Vertical Remote Antenna Tuner
Add-on Kit is described in this assembly manual with the use of the optional DX
Engineering Tilt Base, DX Engineering Radial Plate, DX Engineering 43 foot vertical
antenna and a 2" (maximum) OD mounting pipe. Depending on your installation, slight
variations in dimensions may be required.
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 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, allow easier disassembly and to ensure proper tightening.
The stainless steel laser cut mounting bracket has eight PEM nuts installed for mounting both the
DXE-FCC050-H05-A Feedline Current Choke and the MFJ-927 IntelliTuner™. There are also two
holes for mounting the ground braid straps and two holes for the DXE-SSVC-2P V-Clamp.
Figure 2
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Install the DXE-FCC050-H05-A Feedline Current Choke on the mounting bracket using the four
#6 Hex Head Bolts, four #6 flat washers and four #6 tooth lock washers as shown in Figure 3 .
Figure 3
On the MFJ-927 IntelliTuner™, remove the wing nut, two flat washers and split washer from the
GROUND connection as shown in Figure 4.
Figure 4
Install one of the braided straps on the MFJ-927 IntelliTuner™ GROUND connection as shown in
Figure 5 using the previously removed hardware plus the new #10 stainless steel tooth washer.
Firmly hand tighten the wing nut (do not over tighten using pliers or other means).
Figure 5 - Ground Braid Connection to Tuner GROUND
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Loosen the red connector on the MFJ-927 IntelliTuner™. Install the 14 gage feedline connection
wire (bare wire end) on the , red ANTENNA WIRE connector. Firmly tighten the red connector.
Figure 6 - Feedline Wire Connection
Note: Depending on your antenna installation, you may want to trim the length
of this feedline wire once everything is installed.
Place the MFJ-927 IntelliTuner™ on the mounting bracket. Install four #6 hex head bolts to hold
the MFJ-927 IntelliTuner™ in place on the bracket as shown in Figure 7. The MFJ-927 Remote
IntelliTuner™ is mounted to the bracket this way to make removal easy when making internal tuner
adjustments if needed (refer to the MFJ-927 Remote IntelliTuner™ manual for details). Variations
in the metal mounting bracket on the MFJ-927 may make it appear that the bolt holes do not align
properly with the DX Engineering mounting bracket. The easiest way to mount the MFJ-927 is to
install the two hex head bolts closest to the DXE-FCC050-H05-A Feedline Current Choke first.
Then install the two outboard hex head bolts - you may have to push or pull on the MFJ bracket to
get the holes to align properly.
Figure 7
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Install the two Ground Braids on the mounting bracket using two 1" hex head bolts, flat washers,
star washers and hex head nuts as shown in Figure 5. Note the Ground Braid from the MFJ-927
remote IntelliTuner™ is installed on one of the bolts as shown.
Figure 8
The DXE-8XDU002 coaxial cable jumper is connected from the DXE-FCC050-H05-A Feedline
Current Choke SO-239 connector to the MFJ Tuner "Transmit" SO-239 connector as shown in
Figure 9.
Figure 9
(Shown from bottom and without weatherproofing of the PL-259 connectors for clarity)
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Mounting to Vertical Antenna System
The DXE-MBV-ATU-1 Multi-Band Vertical Remote Antenna Tuner Add-on Kit requires the
distance between the bottom of the DXE-TB-3P Tilt Base (included with the DX Engineering 43
foot vertical antennas) and the top surface of the DXE-RADP-3 Radial plate be set at 6-1/2" as
shown in Figure 10.
Figure 10
The orientation or placement of the Tilt Base and Radial Plate on your antenna system may vary
depending on your installation. The distance between the Tilt Base and Radial plate listed allows
room for the remote antenna tuner and allows easy tilting of the antenna. You may require a
modification to the set up depending on your installation. The distance required is to allow room for
the tuner and to allow proper operation of the Tilt Base.
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Using the included DXE-SSVC-2P - Stainless Steel V-Clamp, mount the assembly to the antenna
mounting pipe just above the Radial Plate. 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. Allow approximately 1/8" to 1/4" gap between Radial Plate Mounting Tab and the Mounting
Bracket as shown in Figure 11.
DXE-SSVC-2P V-Clamp installation on the mounting bracket
Figure 11 - Assembly mounted to 2" OD mounting mast
Indice
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