DX Engineering DXE-WA-BMB Instructions manual

Balun Mounting Bracket for

DX Engineering Maxi-Core® 20

Baluns and Wire Antennas

U.S. Patent D744,459

DXE-WA-BMB

DXE-WA-BMB-INS Rev 1

Shown with optional parts

© DX Engineering 2020

DX Engineering - 1200 Southeast Ave. - Tallmadge, OH 44278 USA

Phone: [phone] ∙ Tech Support and International: [phone]

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Introduction and General Information

This custom made patented (US Patent No. D744,459) Balun
Mounting Bracket for top terminal DX Engineering Baluns
and Wire Antennas kit includes two DX Engineering End
Insulators (US Patent No. D534,905) and all Stainless Steel
Hardware. Using the optional coaxial cable strain relief
(DXE-CSR213-1 for RG-213 sized coax or the DXE-
CSR8X-1 for RG-8X sized coax) with your optional dipole
wire (DXE-ANTW Antenna Wire) and DX Engineering
rope, this kit is the ideal starting point for building a quality
coaxial cable fed single band resonant dipole, folded dipole
or off-center fed dipole. The custom made mounting bracket
will fit other manufacturers’ similarly packaged Baluns.

The unique design provides minimum capacitive coupling to the wire and field surrounding the Balun
core plus a special UV resistant, strong black plastic compound. The bracket as well as the end
insulators feature an exclusive serpentine wire weave grip for insulated DX Engineering Antenna Wire.
This method of threading the wire provides a grip strong enough to permanently support the antenna
wires without the need for looping or wrapping the wire ends back on to the dipole wires. This allows
fast and easy field adjustments of antenna length without soldering.

This manual does not cover all the types of resonant dipoles that could be built using these components.
The type of resonant dipole to be built is limited only by your imagination. For more complete antenna
theory and for construction of the many different types of wire antennas possible, refer to textbook
material such as the "ARRL Antenna Book" which is also available from DX Engineering.

Features

 All-in-One Wire Antenna Center Insulator and Balun mounting bracket (US Patent No. D744,459)
 Custom molded, UV resistant black poly-resin blend
 Serpentine routing of dipole wires to ensure maximum grip without soldering or other

mechanical restraints

 Includes two DX Engineering End Insulators (US Patent No. D534,905)
 Easily mount a DX Engineering Maxi-Core® 20 Balun with top wing nut terminals
 Adapts easily to other brand baluns built with the same NEMA mounting box
 All Stainless Steel Balun Mounting Hardware

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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Parts List

Qty

Description

1

DX Engineering Balun & Wire Antenna Bracket

2

DX Engineering End Insulators

4

6-32 x 3/4” long Stainless Steel Hex Head Bolts

8

#6 Stainless Steel Flat Washers

4

6-32 Nyloc Hex Nuts

Additional Items Needed, but not Supplied:

 DX Engineering Maxi-Core® 20 Balun
 DX Engineering Premium Antenna Wire
 DX Engineering Coaxial Cable Strain Relief
 UV protected rope
 DX Engineering Coaxial Cable with PL-259 connectors installed
 JTL-12555 Jet Lube SS-30 compound - used on the threads of Stainless Steel Hardware to prevent

galling (seizing) and aid in proper tightening

Antenna Installation

Safety Considerations

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.

Mounting Considerations

When planning the location of your antenna, consideration should be given to the height, location of
suitable support structures and feedline positioning and length.

Generally speaking, dipole antennas should be mounted as high as possible for best performance.
Antenna height will affect the exact resonance point, radiation pattern, and takeoff angle. The higher the
antenna, the lower the takeoff angle to the horizon, which increases the effective range of the antenna.

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