DX Engineering DXE-UN-43 Manual de usuario

Special

Multi-Band Vertical Antenna

UNUN

UNUN, UNUN Bracket and UNUN Retrofit Information

DXE-UN-43 / DXE-UN-BRKT / DXE-UN-43-R

(US Patent No. D597,086)

DXE-UN-43-INS Revision 4c

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]

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Table of Contents

Introduction

DX-UN-43 UNUN Features

Supplied Items

Parts List

DXE-UN-43

DXE-UN-43-R

DXE-UN-BRKT (US Patent No. D597,086)

DXE-TCB-UNFK

Installing the UNUN

DX Engineering Multi-Band Vertical Antenna Systems

Repositioning the Feedpoint Connection Hardware

Repositioning the Tilt Base on the Mounting Pipe

Assembling the UNUN Mounting Bracket

Installation of UNUN Assembly to Antenna Lower Section

Feedline Connections

Other Manufacture's Non-Resonant 43 foot Vertical

Antenna systems

Radial System

Tuning the Vertical Antenna System

Manual Updates

Optional Items

Technical Support

Warranty

Introduction

The DXE-UN-43 DX Engineering Multi-Band Vertical UNUN built with proven Maxi-Core®

Technology is a matching device specifically designed for application with non-resonant 43 foot

tall vertical multi-band antennas.

The DXE-UN-43 assures the best efficiency from your vertical multi-band antenna and

transmission line/tuner installation. Using the DXE-UN-43 results in minimizing the additional

transmission lines losses caused by SWR and allows your antenna to perform to its full potential.

The DXE-UN-43 reduces the stresses on your equipment more efficiently than similar competitive

products.

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By allowing your wide-range tuner to easily match the antenna’s complex impedance, low

frequency performance is improved over other devices currently available.

Note: TES-81343 Never-Seez®or DXE-NSBT8 Anti-Seize should be used on all clamps, bolts and

stainless steel threaded hardware to prevent galling and to ensure proper tightening.

DXE-UN-43 UNUN Features

Full band tunable coverage on 160-10 meters with an SWR under 1.5:1

Customer supplied wide band tuner required

Impedance: 200 Ωto 50 Ω- optimized for 43 ft verticals

Ratio: 4:1 Specifically designed for Multi-Band 43 foot Vertical Antennas

Power Handling: 2 KW / 5 KW Peak - Handles rated power with minimal energy loss so

there is no thermal related failure

Silver / PTFE SO-239 input connector

Two 1/4-20 feedpoint connection studs with Stainless Steel Flat Washers, Split Washers,

Fender Washers & Wing Nuts

High impact plastic, weather sealed NEMA-spec case: 2-1/2" x 4" x 4" inches (HxWxL)

Shares the same mounting footprint as other similar competitive products, so it may be

easily substituted in existing installations for superior performance

Supplied Items:

Depending on your application, The DXE-UN-43 comes in the following configurations:

DX Engineering

Part Number

Description

DXE-UN-43

DXE-UN-43 only - no extra parts - ideal for replacing competitive UNUNs

and Baluns for other homebrew or other manufacturers 43 foot vertical

antenna systems on the market.

DXE-UN-43-R

Retrofit kit for DX Engineering Multi-Band Vertical Antenna Systems: DXE-

MBVA/VE series. Includes DXE-UN-43 UNUN, DXE-UN-BRKT UNUN

Mounting Bracket (US Patent No. D597,086) and all hardware. Also includes

one DXE-TCB-UNFK Feedpoint Connection Kit. May also be used for other

similar vertical multi-band antennas.

DXE-UN-BRKT

DXE-UN-43 Mounting Bracket with Custom 90 degree Stainless Steel

Studded Clamps and all hardware. (US Patent No. D597,086)

DXE-TCB-UNFK

UNUN Feedpoint Connection Kit that contains two 1” wide x 9" long copper

tinned braids soldered and drilled on each end with a 1/4” hole for easy

connection to the DXE-UN-43 UNUN.

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DXE-UN-43

Qty

Description

DXE-UN-43 Multi-Band UNUN for 43 foot Vertical Antennas

DXE-UN-43-R

Qty

Description

DXE-UN-43 Multi-Band UNUN for 43 foot Vertical Antennas

Mounting Bracket for the DXE-UN-43 - (US Patent No. D597,086)

# 6 x 3/4" long Stainless Steel Hex Head Bolts

# 6 Stainless Steel Flat Washer

# 6 Stainless Steel Nyloc Nut

Custom Stainless Steel 90 degree studded Element Clamp

1/8" thick Aluminum Spacer for #10 Hardware

# 10 Stainless Steel Nyloc Nut

# 10 Stainless Steel Flat Washer

DXE-TCB-UNFK - 1/2" x 9" Soldered & drilled Braided Feedpoint Straps (2)

DXE-UN-BRKT US Patent No. D597,086

Qty

Description

Mounting Bracket for the DXE-UN-43 - (US Patent No. D597,086)

# 6 x 3/4" long Stainless Steel Hex Head Bolts

# 6 Stainless Steel Flat Washer

# 6 Stainless Steel Nyloc Nut

Custom Stainless Steel 90 degree studded Element Clamp

1/8" thick Aluminum Spacer for #10 Hardware

# 10 Stainless Steel Nyloc Nut

# 10 Stainless Steel Flat Washer

DXE-TCB-UNFK

Qty

Description

1” wide x 9" long copper tinned braids (2) soldered and drilled on each

end with a 1/4” hole for easy connection to the DXE-UN-43 UNUN.

Two per package.

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Installing the UNUN

When used with the optional DXE-UN-BRKT, the UNUN may be attached to the 2" OD base

section of any non-resonant 43 foot tall

vertical antenna system, including your

own home-brew creation. It also shares

the same mounting footprint as other

similar competitive products, so

it may be easily substituted in existing

installations for superior performance.

The DXE-UN-43 may also be mounted

on a wood post or other mounting

scheme using your own hardware.

The optional DXE-UN-BRKT comes

with: One UNUN Bracket, four #6 x

3/4" long Stainless Steel Hex Head

Bolts, eight #6 Stainless Steel Flat

Washers, four #6 Nyloc Nuts, two

Custom 90 degree Studded Element Clamps, two #10 Nyloc Nuts, two 1/8" thick Aluminum

Spacers and four #10 flat washers.

The UNUN should be mounted with the SO-239 connector facing downward to allow drainage of

any condensation from the weep

holes in the high impact plastic,

weather sealed NEMA-spec case.

Mount the UNUN to the UNUN

Bracket using the hardware as shown.

The custom studded element clamps

are mounted to the UNUN Bracket as

shown.

As with all coaxial cable connections,

you should use TES-2155 3M

Temflex™ Rubber Splicing Tape, with an overwrap of TES-06132 Scotch®Super 33+ Vinyl

Electrical Tape for weatherproofing.

A good RF connection must be made from the UNUN to both the vertical radiator and the radial

system. DX Engineering offers the optional DXE-TCB-UNFK UNUN

Feedpoint Connection Kit that contains two 1” wide x 9" long copper

tinned braids soldered and drilled on each end with a 1/4” hole for easy

connection to the UNUN. If your application requires a different connection style or layout, DX

Engineering can assist you. Call DX Engineering for suggestions.

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The UNUN has two 1/4-20 connection points and have Wing Nuts

and Flat Washers used for connecting braided feed wires to the

antenna feedpoint and radial system. The antenna feedpoint must be

connected to the positive phase terminal on the DXE-UN-43 UNUN

closest to the Red "+"on the label. The radial system is connected

to the negative terminal nearest the Black "▬"on the label.

DX Engineering Multi-Band Vertical Antenna Systems

The DXE-UN-43 is an enhanced replacement for the 4:1 Balun on the DX Engineering Multi-Band

vertical antenna systems.

Remove the coaxial cable connection from the 4:1 Balun and the two braided feed lines going from

the Balun to the Radial Plate and the antenna feedpoint connection bolt.

Remove the Balun and Balun Shelf from the mounting pipe.

Loosen the Tilt Base bolts for lowering/raising the vertical antenna. Carefully tilt the antenna to the

down position. Ensure you have some support system (table, saw horse, etc.) to support the antenna

while in the down position.

Repositioning the Feedpoint Connection

Hardware

Loosen the two 2" U-Bolt Saddle Clamps holding

the base section to the insulated channel.

Loosen the element clamp located at the top of the

base section and rotate the base section so the

feedpoint is pointing to the left (as you look at the

antenna from the front).

Also ensure there is 1-3/4" between the bottom of

the U-Bolt and the antenna feedpoint hardware.

Tighten the two 2" U-Bolt Saddle Clamps and the

element clamp at the top of the base section.

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Repositioning the Tilt Base on the Mounting Pipe

Loosen the two V-Clamps holding the

Tilt Base to the Mounting Pipe.

Lower the Tilt Base so there is 4-1/2" clearance

between the bottom of the Tilt Base and the Top

of the Radial Plate.

Raise the antenna back to the vertical position. Tighten the

Tilt Base bolts for lowering/raising the antenna.

Assembling the UNUN Mounting Bracket

Using the #6 hex head bolts, #6 flat washers and #6 Nyloc nuts, attach the UNUN to the UNUN

Bracket with the SO-239 connector facing downward. Tighten the Nyloc Nuts so they are snug. Do

not over tighten since the mounting tabs on the UNUN are plastic.

Attach the custom Stainless Steel 90 degree Studded Element Clamps to the patented UNUN

Bracket using the Washers, Aluminum Spacers and #10 Nyloc Nuts as shown below. Snug the #10

Nyloc nuts just to the point that you can still rotate the custom studded element clamps. The #10

Nyloc Nuts will be tightened later.

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Installation of UNUN Assembly to Antenna Lower Section

The completed UNUN and UNUN Mounting Bracket assembly is mounted to the 2" OD antenna

lower base section. To allow easy installation of the UNUN Bracket to the lower base section, open

the upper and lower custom studded element clamps by unscrewing the worm drive of the clamps as

shown in Figure 1.

Figure 1

Position the UNUN Mounting Bracket so the bottom element clamp is located between the

feedpoint hardware and the U-Bolt as shown in Figure 2.

Figure 2

A: Clamps open, Clamp Ends inserted to go around Base Section Element

B: Clamp Ends go behind Base Section Element

Once in position, re-insert the clamp ends into the worm drive of the clamps and using a flat blade

screwdriver or nut driver, snug them up as shown in Figure 3. Note position of lower clamp is

between the feedpoint hardware and the U-Bolt.

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Figure 3

Position the UNUN so it faces forward as shown in Figure 4. Tighten the Upper and Lower

Studded Clamps and tighten the Nyloc Nuts holding the bracket to the Upper and Lower Studded

Clamps.

Feedline Connections

The DXE-UN-43 UNUN is attached to the antenna feedline connections using the DXE-TCB-

UNFK UNUN Feed Point Connection Kit which contains two pre-drilled copper tinned braids.

Both braids are 1" wide by 9" in length. Connect one braid from the antenna feedpoint located on

the base section of the antenna to the terminal on the DXE-UN-43 UNUN closest to the Red "+"

on the label as shown in Figure 5. Do not over tighten the wing nuts. Hand tighten them only, do

not use pliers or other tools to over tighten the wing nuts.

Connect the other 9" braid from the terminal on the DXE-UN-43 UNUN closest to the Black

"▬"on the label to the closest radial wire bolt on the optional DXE-RADP-3 Radial Plate as

shown in Figure 5. Route both braided cables as shown. Ensure the "+" connection is not shorting

out to the "-" side.

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The feedpoint on the antenna bas section can be facing forward, or can be facing to the left (when

looking at the front of the antenna).

Note: Ensure the"-" braid connection to the Radial Plate does not interfere with

the tilting process. If this is a problem, then remove the braid from the

UNUN when tilting the antenna. Remember to properly replace it when

the antenna is in the upright position.

Figure 5

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