DX Engineering DXE-MBVE-1UGBRT3 User manual

Remote Tuner Options

for the

DXE-MBVE-1

Vertical Antenna

DXE-MBVE-1UGBRT3

for the MFJ-993BRT

300 Watt Remote Tuner

DXE-MBVE-1UGBRT4

for the MFJ-994BRT

600 Watt Remote Tuner

DXE-MBVE-1UGRT8

for the MFJ-998RT

1500 Watt Remote Tuner

DXE-MBVE-1-RT-INS Revision 1

MFJ-993/994BRT Shown MFJ-998RT Shown

1200 Southeast Ave. - Tallmadge, OH 44278 USA

Phone: (800) 777-0703 - Tech Support and International: (330) 572-3200

Fax: (330) 572-3279 - E-mail: [email protected]

- 1 -

Introduction

This instruction manual describes the optional remote tuner upgrade packages that use the MFJ

remote tuners available for the DXE-MBVE-1 multi-band vertical antenna system.

There are 5 complete DXE-MBVE-1 antenna systems for use with MFJ the Remote Tuners. These

packages include the DXE-MBVE-1 antenna with mounting hardware and remote tuner options:

DX Engineering

Antenna Model

Numbers

DXE-MBVE-

TBHW

Hardware Kit

DXE-MBVE-1-

UGHW

Hardware Kit

DXE-MBVE-

THW

Hardware Kit

MFJ-993BRT

Tuner

300 Watt

MFJ-994BRT

Tuner

600 Watt

MFJ-998RT

Tuner

1500 Watt

DXE-MBVE-1-BRT

DXE-MBVE-1-BRT3

DXE-MBVE-1-BRT4

DXE-MBVE-1-RT

DXE-MBVE-1-RT8

X = Included

There are 5 upgrade retrofit kits for existing DXE-MBVE-1 systems for use with the MFJ remote

tuners. Two of the upgrade kits have only the mounting hardware needed for use with a customer

owned MFJ remote tuner, the other kits include the mounting hardware and an MFJ remote tuner.

DX Engineering

Upgrade Model

Numbers

DXE-MBVE-

TBHW

Hardware Kit

DXE-MBVE-1-

UGHW

Hardware Kit

DXE-MBVE-

THW

Hardware Kit

MFJ-993BRT

Tuner

300 Watt

MFJ-994BRT

Tuner

600 Watt

MFJ-998RT

Tuner

1500 Watt

DXE-MBVE-1-UGBRT

DXE-MBVE-1UGBRT3

DXE-MBVE-1UGBRT4

DXE-MBVE-1UG-RT

DXE-MBVE-1UGRT8

X = Included

A complete manual including the assembly of the DXE-MBVE-1 antenna system shows detailed

information on the antenna and is a good reference when performing this upgrade. If you have

misplaced your original DXE-MBVE-1 manual, you can view or download a copy from the DX

Engineering web site at www.DXEngineering.com.

Additional Material Needed but not Supplied:

JTL-12555 Jet-Lube™SS-30 Pure Copper Anti-Seize 12555 - To ensure good electrical

and RF connection for Aluminum Element Sections and also used on the threads of Stainless

Steel Hardware to prevent galling (seizing) and aid in proper tightening.

11/64” drill bit and drill

Pencil

Tape measure

Screwdriver

Standard tools including wrenches, nut drivers, etc.

- 2 -

DXE-MBVE-1-UGHW Parts Listing

DXE-MBVE-1UGHW Upgrade Insulator Hardware Kit

For the MFJ-993BRT/MFJ-994BRT/MFJ-998RT Tuner mounting option

Qty

Insulator, Black, Delrin, MBVE-1 Conversion

#10 Self Tapping Screw (requires customer supplied 11/16” drill bit)

10” Wire Assembly, 12 ga, Black Insulated, two `1/4” ring terminals

DXE-MBVE-THW Parts Listing

DXE-MBVE-THW Mounting Hardware Kit

For the MFJ-993BRT/MFJ-994BRT Tuner mounting option

Qty

U-Bolt, Stainless Steel, 2.5”, 4” long, 5/16”-18 threads

Aluminum Saddle, V-Block

5/16”-18 Hex Nut, Stainless Steel

5/16”-18 x 5/8” long, Hex Head Cap Bolt, Stainless Steel

5/16” Washer, Flat, Stainless Steel

5/16” Washer, External Tooth, Stainless Steel

5/16” Washer, Split Lock, Stainless Steel

2-/4” Element Clamp with Threaded Stud, Stainless Steel

10-24, Hex Nut, Stainless Steel

#10 Washer, Split Lock, Stainless Steel

#10 Washer, Flat, Stainless Steel, Thick

#10 Washer, External Tooth, Stainless Steel

3” Wire Assembly, 12 ga, Black Insulated, two ring terminals

10” Wire Assembly, 12 ga, Black Insulated, two #10 ring terminals

DXE-MBVE-TBHW Parts Listing

DXE-MBVE-TBHW Mounting Hardware Kit

For the MFJ-998RT Tuner mounting option

Qty

V-Block Saddle, Aluminum

U-Bolt, Stainless Steel, 3.75” x 5/16”-18

Tuner Shelf Bracket, Stainless Steel

5/16” Washer, Split Lock, Stainless Steel

5/16” Washer, Flat, Stainless Steel

5/16” Washer, External Tooth, Stainless Steel

5/16” Hex Nut, Stainless Steel,

2.25” Element Clamp with Threaded Stud, Stainless Steel

10-24 Hex Nut, Stainless Steel

1/4”-20 x 3/4” long Hex Bolt, Stainless Steel

1/4”-20 Hex Nut, Stainless Steel

1/4”-20 Acorn Hex Nut, Stainless Steel

1/4” Washer, External Tooth, Stainless Steel

#10 Washer, Split Lock, Stainless Steel, Thick

#10 Washer, Flat, Stainless Steel, Thick

#10 Washer, External Tooth, Stainless Steel

10” Wire Assembly, 12 ga, Black Insulated, two #10 ring terminals

- 3 -

Basic Installation for all remote tuner models

1. Disconnect your coaxial cable that is connected to the UNUN.

Remove the UNUN, UNUN mounting bracket and the braided

feedline connections from the DXE-MBVE-1 antenna. The

UNUN will not be used when the remote tuner is installed.

2. Tilt the DXE-MBVE-1 antenna down so you can separate the base

section from the antenna easily to work on installation of the new

parts on the base section. Ensure the antenna is supported.

3. Separate the antenna from the base tube (which is installed in the tilt base insulated

channel) by loosening the element clamp as shown. Raise the base section back to

the vertical position.

4. Install the black Delrin insulator in the base section tube as

shown.

Approximately 1-1/2” below the joint between the black

insulator using a customer supplied 11/64” drill bit, drill a

hole through the base tube into the black insulator. The hole

only needs to be drilled into the insulator approximately 1/8”.

Install the #10 Slotted hex head self tapping screw through

the aluminum base section into the black insulator. Tighten

the screw so it is even with the surface of the base tube. The

screw holds the insulator in place and does not allow it to

rotate.

(Step 5 is shown after steps A & B)

- 4 -

Steps A1 through A7 are specific to the MFJ-993BRT or

MFJ-994BRT remote tuner options.

(See step B1 for the MFJ-998RT remote tuner option)

A1. Tilt the base section and re-install the antenna upper sections onto the black insulator. Using

the new Studded band clamp, lightly tighten the clamp in place as shown.

Once this is done, raise the antenna back up to easily work on the rest of the installation. The

new studded band clamp will be re-positioned and

tightened in a later step.

A2. Install the short ground wire in the corner hole on

the tuner mounting flange using the 5/16”-18 Hex

Nut, 5/16”-18 x 5/8” long Hex Head Cap Bolt,

5/16” Flat Washer, 5/16” External Tooth Washer,

5/16” Split Lock Washer and 3” Wire Assembly.

The other end of the short 3” tuner wire goes to the

tuner ground wing nut connection on the tuner as

shown.

A3. Position two of the tuner mounting aluminum V-saddle clamps 3/4” below the top of the thick

wall tube as shown. The second saddle clamp is used as a spacer.

Use two 5/16”-18 Hex Nuts, two 5/16” Flat Washers, two 5/16” Split

Lock Washers and one 5/16”-18 x 4” long U-Bolt. Do not over tighten

the U-Bolt Hex Nuts which can break or bend the aluminum V-saddle

clamps. Evenly tighten each side of the U-bolt until the split lock washer

is seated properly.

A4. Loosely mount the bottom aluminum saddle clamps assembly

approximately 13-1/4” below the previously (upper) mounted saddle

clamps using the same hardware described for the upper clamps.

Ensure all clamps are facing the same direction.

(This installation method works well since the MFJ tuner mounting

flanges can be in slightly different positions on the tuners.)

- 5 -

A5. Place on 5/16” External Tooth Washer on each leg of the upper saddle clamp U-bolt and then

position the MFJ-993BRT or MFJ-994BRT tuner in place on the upper U-bolt that protrudes

from the saddle clamp. Once in place, loosely install the two 5/16” Flat Washers, two 5/16”

Split Lock Washers and two 5/16”-18 Hex Nuts to hold the tuner in place on the upper clamp

as shown. You want the tuner to be able to move a bit for final positioning.

A6. Position the lower saddle clamp (with the external tooth washers

on each leg) so the U-bolt will pass through the bottom mounting

flange on the tuner as

shown. Once the tuner is

positioned in place and

straight - use the two

5/16” Flat Washers, two

5/16” Split Lock Washers

and two 5/16”-18 Hex

Nuts to hold the bottom of

the tuner in place. Tighten

all of the tuner mounting

hardware (top and

bottom).

- 6 -

A7. When the upper antenna parts are mounted to the base assembly (see previous installation

instructions), install the Studded Band Clamp on the first element just above the black insulator

with the stud facing the side nearest the tuner connections. Install the 10” long tuner wire on

the studded band clamp using the #10 hardware as shown. The other end of the 10” wire is

connected to the tuner output wing nut connection on the tuner as shown.

Steps B1 through B6 are specific to the MFJ-998RT

remote tuner option.

(See step A1 for the MFJ-993/994B8RT remote tuner options)

B1.Install the four 1/4”-20 x 3/4” long

Hex Head Cap Bolts, four 1/4”

External Tooth Washers and four

1/4”-20 Hex Nuts on the tuner shelf

bracket as shown. The hex bolt heads

will be on the same side as the logo

on the tuner shelf bracket.

B2.Loosely install the two 4” long U-bolts, two V-saddle clamps with the 5/16”-20 Hex Nuts, 5/16”

Flat Washers, 5/16” Split Lock Washers and 5/16” External Tooth Washers as shown on the

tuner shelf bracket. NOTE: A second saddle clamp may be required to act as a spacer, similar to

Step A3 in the pervious section.

- 7 -

B3. With the U-bolts loose, you can slip the assembly onto the

lower base tube. Position the top U-bolt 4-1/2” below the top of

the base tube as shown. (Refer to Page 40 for photos showing

the positioning of the clamps and tuner). Once positioned

correctly, tighten all of the hardware holding the tuner shelf

assembly to the lower base tube. Do not over tighten the U-Bolt

Hex Nuts which can break or bend the aluminum saddle clamp.

Evenly tighten each side of the U-bolt until the split lock

washer is seated properly.

B4. Tilt the base section down and re-

install the antenna upper sections onto

the black insulator. Using the new

Studded band clamp, lightly tighten

the clamp in place as shown.

Once this is done, raise the antenna

back up to easily work on the rest of

the installation. The new studded band

clamp will be re-positioned and

tightened in a later step.

B5. Place one 5/16” External Star Washer on each of the four bolts that are installed in the tuner

shelf bracket and then place the MFJ-998RT Tuner on the bolts as shown. Position the tuner so

it is straight and the large hole on the tuner metal bracket is close to the antenna (this is where

the feedline wire will pass through). Use one 1/4”-20 Acorn Nut on each of the bolts to secure

the MFJ-998RT tuner in place.

- 8 -

B6. When the upper antenna parts are mounted to the base assembly (see previous installation

instructions), install the Studded Band Clamp on the first element just above the black insulator

with the stud facing the side nearest the tuner connections. Install the 10” long tuner wire from

the studded band clamp using the #10 hardware. The other end of the 10” wire is connected to

the tuner output wing nut connection as shown.

A coaxial cable jumper between the Tuner input and the Radial Plate ensures proper connection

of the radial field to the antenna system. The feedline coaxial cable going from the radial plate

to the Bias-T in the radio room connects to the other side of the connector on the Radial Plate.

Step 5 is common to all remote tuner installations.

5. At the bottom of the base section tube there is a drilled hole that had previously been used as

the feedpoint (the wire was removed in an earlier step). Connect one end of the second 10”

wire with 1/4” round terminal rings to the existing hardware. The other end of the wire is

connected to the Radial Plate. Position the wire so it will not interfere when tilting the antenna.

This wire supplies a ground connection to the radial system.

The feedline coaxial cable goes from the remote tuner connector to the Bias Tee in the radio room.

- 9 -

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