Multi-Band Dipole Kit - DX Engineering · Multi-Band Dipole Kit ... The ladder line feedline should...

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Multi-Band Dipole Kit

DXE-WA-070 40-10 Meters



DXE-WA-INS-Series Rev 3b

DX Engineering 2017

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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Introduction

The DX Engineering Multi-Band Dipoles are designed to be rugged yet lightweight. Using a tuner,

they are usable to 30 MHz. They come complete with the extra length wire elements, 100 feet of

premium 300 Ω ladder feedline, Center-T support (U.S. Patent No. 7,764,244), and end mounting

insulators (U.S. Patent No. D534,905). All hardware is stainless steel.

Dipole Models

There are 3 configurations. Depending on the tuner used, each model can be used at the low end of

the respective 40, 80 or 160m band through 30 MHz:

Part Number Length in Feet Band Coverage

DXE-WA-70 70 40M through 10M*



* Band coverage depends on location of the antenna, the use of a

wide range tuner and the appropriate DX Engineering balun

designed for use with an antenna tuner.

Specifications

All DX Engineering Multi-Band Dipole Antennas are built using the highest quality components.

Elements - 14 AWG stranded copper, black PVC jacket for flexibility and strength

Feedline - 18 AWG stranded, 300 Ω ladder line, UV-resistant, 0.88 Velocity Factor

Hardware - Stainless steel

Center-T support and end-insulators - Black, high impact, and UV-resistant

Power rating - When using an external balun, such as the DX Engineering DXE-BAL050-

H10-AT (rated at 5 kW continuous) or the DXE-BAL050-H11-CT (rated at 10 kW), the

limiting factor in band coverage will be the height above ground, location and the tuner

used. DX Engineering Multi-Band Dipoles can handle over 2,000 watts in most typical

installations.

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

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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, these 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.

For DX, the minimum height above ground should be 1/2-to 1-wavelength at the lowest operating

frequency. On the low bands, this height becomes impractical for most hams. For example, an 80m

dipole at 70 feet is about 1/4-wavelength above the ground. This antenna would be good for local

and short distance communications, but not optimal for DX, due to the high takeoff angle and

ground absorption. A 40M dipole at 70 feet is approximately 1/2-wavelength high and is likely to be

good for DX and less optimal for local or short range communications. For more information on

antenna design, feedline and radiation angles, consult a reliable text such as the ARRL Antenna

Book.

The antenna, including the 300 Ω feedline, should also be mounted as far from other structures as

possible. This includes the ends of the wire elements, which are actually the most sensitive part of

the antenna. Any objects, metal in particular, within the near-field radiation pattern can affect the

impedance and radiation pattern of the antenna.

The feedline should also come away from the antenna at right angles for at least 1/2-wavelength for

best performance.

Most installations involve compromises due to local terrain, available supporting structures, or other

restrictions. Do the best you can with what you have.

Multi-Band Center Fed Shortened Dipole using Ladder Line Feedline

The DX Engineering Multi-Band Dipoles include 100 feet of high quality legal limit capable 300 Ω

ladder line. Depending on your specific installation, this feedline will need to be shortened or

lengthened. The optional DXE-LLC-1P Ladder Line Couplers can be used for connecting ladder

line together for lengthening the ladder line.

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Also included are two rolls of element wire, a hardware packet and four ring terminals. Two of the

ring terminals accommodate 14 gauge wire and are used for the elements. The smaller ring

terminals accommodate 18 gauge wire and are used for the ladder line.

Unroll the 2 wire elements and the ladder line using a hand-over-hand technique. This will prevent

kinks and allow the wires to lay flat for assembly.

The ladder line feedline should be installed in odd multiple lengths of 1/8-wavelength on the lowest

operating frequency to optimize the impedance presented to the balun over the frequency range of

the antenna. This length can be calculated using the formula shown above Table 1 or use Table 1.

DX Engineering 300 Ω ladder feedline has a velocity factor (VF) of 0.88.

If you have excess ladder line, it can be zigzagged while suspended in air, but it can't be closer than

a few conductor spacings to metallic objects and should not be coiled or laid on the ground. If it

is necessary to pass close to a metallic object, twist the line to partially balance the affect on both

sides of the feedline.

If you need additional feedline, 100 ft. rolls (part number DXE-LL300-1C) and a convenient line

coupler (part number DXE-LLC-1P) are available from DX Engineering. The line coupler includes

a high impact, insulated splice block, ring terminals and stainless hardware, permitting strong and

consistent splices of ladder line. See Figure 2.

Note: When using an external balun, the feedline length should be calculated from the Center-T

ladder line connection to the balun.

Often, a 4:1 balun is suggested for Multi-Band Dipoles. However, the best balun to use for this

application has a 1:1 ratio. The impedance at the end of the feedline will vary from very high to

very low. Tuners have an easier time with high impedance than a low one. A balun with a ratio of

4:1 or more will transform the already low impedance to an even lower one that will make the

antenna hard to tune. The 1:1 ratio balun will just pass the low impedance through. Provide strain

relief so the ladder line is not directly pulling on the balun connections.

The correct DX Engineering 1:1 Current Balun is DXE-BAL050-H10-AT or DXE-BAL050-H11-

CT . These baluns provide better balance, have lower loss, and are more tolerant to load impedance

and balance variations than other baluns. Note that COMTEK baluns are not recommended for use

with multi-band dipoles.

Even when properly done, this arrangement will subject the coaxial line between the tuner and

balun to very high standing waves and high voltage and/or current. Keep the coaxial line length as

short as possible. If an externally mounted balun is not used, do not route the ladder line so close to

the tuner or the rest of the station cables and equipment that RF feedback occurs. This will manifest

itself by making the antenna very difficult to tune and the tuner controls will be very touchy. There

may also be RF present on the microphone, key, etc. At a minimum, use good low loss coaxial line

like DXE-213U an RG-213 or equivalent. RG8X and smaller coax will not do a proper job.

A simple multi-band dipole may be constructed for the lowest band on which operation is desired,

but the overall length of the dipole antenna should be a shortened half wavelength as shown in

Table 1. This antenna may be fed with ladder line and an antenna tuner with balanced connections.

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You should use a DX Engineering external balun connected with coaxial cable to a wide range

unbalanced tuner for tuning the different bands.

Although it may not seem logical, shortening a multi-band dipole intended for 160 through 10 meter

operation to less than 220 Ft. will actually help your wide range antenna tuner cover the lower

frequencies easier. The same is true for a 80 through 10 meter coverage, shortened antenna to 110

ft. That is because you are using a non-resonant antenna system when you use ladder line feed

systems for multi-band operations.

Changing the length of the ladder line will alter resulting impedances so the tuner should be able to

reach a certain frequency that was giving it trouble. The coax from the DX Engineering 1:1 Balun

to the tuner should be kept short; typically 5 to 15 feet is best. You can read more about this on the

DX Engineering web site; look for the article "Choosing the Correct Balun".

The DXE-LL300 - 300 Ω ladder feedline for a multi-band dipole must be in odd multiple lengths of

1/8 wavelength on the lowest operating frequency, used to optimize the impedance presented to the

balun and tuner over the frequency range of the antenna. This length can be calculated using the

following formula or use Table 1. The DX Engineering 300 Ω ladder feedline has a VF (Velocity

Factor) of 0.88.

Formula:

Where: 123 = 1/8-Wavelength Factor, Freq = Frequency in MHz,

0.88 = Velocity Factor of DXE-LL300 300 Ω Ladder Feedline

Multiply the result times the odd multiple (1, 3, 5, 7, etc.) to get the correct length closest to your

required feedline length.

Table 1

Recommended Antenna and Feedline Length for Shortened Multi-Band Dipoles for easier tuning

Frequency (MHz)

Shortened Dipole (Ft.)

Make feedline an Odd Multiple of this length in Feet (x 1, 3, 5, etc.)

1.8 220 60.1

3.5 110 30.9

5.3 76 20.4

7 55 15.4

10.1 41 10.7

14 29 7.7

18 22 6

21 19 5.2

24 19 4.5

28 19 3.9

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Example: To use an antenna from 80 meters to 10 meters, the feedline should be in odd 1/8

wavelength multiples on 80 meters.

The 80 meter band starts at 3.5 MHz. Therefore, 123/3.5 = 35.1.

DX Engineering 300 ohm ladder line has a velocity factor (VF) of 0.88, so 35.1 x 0.88 = 30.9 ft.

per 1/8-wavelength.

If 90 feet is required to get to your balun mounting position, the nearest odd multiple 1/8

wavelength length is 92.7 feet (30.9 x 3).

If you needed 110 feet, you would have to add to the feedline to achieve 154.5 feet (30.9 x 5) to

maintain the odd 1/8th multiple rule for length of the DX Engineering 300 ohm ladder line.

Assembling the Dipole

Center-T Support

The Center-T support has pre-drilled holes for attachment of the wire elements, ladder line feedline,

and a support or messenger line.

Kit Contents

Qty Description

1 Ladder Line Center “T”

2 End Insulator

2 Element Wire (length depends on model)

1 Ladder Line, 100 Ft.

2 Ring Terminal - 14 ga. - #10 hole

2 Ring Terminal - 18 ga. - #10 hole

4 Flat Washer, #10

2 Split Lock Washer, #10

2 External Tooth Lock Washer, #10

2 Hex Head Bolt, 10-24 x 3/4”

4 Hex Head Nut, 10-24

Install two the two 18 ga. Ring Terminals on one end of the ladder line. Crimping works fine,

soldering is optional.

Install one 14 ga. Ring Terminal on each of the wire lengths at one end. Crimping works fine,

soldering is optional.

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Install the Hex Head Bolts into the two upper holes in the Center-T. Note one side of the Center-T

has recessed areas for the hex head on the bolts.

Install a flat washer and then a hex nut on each of the hex head bolts and tighten. Refer to Figure 1

for a picture showing the hardware installed.

Weave the end of the ladder line with the attached Ring Terminals through the Center-T as shown

in and place the ring terminals on the hex head bolts. Remove the excess slack in the ladder line on

the Center-T support prior to putting up the antenna.

Install external tooth lock washers over the ladder line terminals.

Weave the ends of the element wires with ring terminals through the Center-T as shown and place

the ring terminals on the hex head bolts. Remove the excess slack in the wire elements on the

Center-T support prior to putting up the antenna.

Install flat washers on top of the element ring terminals. Install split lock washers on top of the flat

washers. Finally install hex nuts on top of the split lock washers and tighten the assembly.

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Figure 1 - Center-T Support Hardware Stack, DX Engineering Logo Facing Up

Ladder Line Length

Determine the length of ladder line needed for your particular antenna design. Refer to Table 1 for

details on ladder line lengths.

If you need additional feedline, the optional DX Engineering DXE-LLC-1P Ladder Line Coupler

can be used to create a strong and consistent splice. See Figure 2.

Figure 2 - DXE-LLC-1P Line Coupler

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Element Wire Lengths

Determine the length of the element wires needed for your particular antenna design. Refer to Table

1 for details on element wire lengths.

End-Insulators

How Strong are the DX Engineering End Insulators?

DX Engineering patented (US Patent No. D534,905) serpentine style end insulators (DXE-UWA-

END-KIT) are custom molded from high impact fiberglass

impregnated nylon for tremendous breaking strength and UV

protection. Thousands of the DX Engineering End Insulators

have been installed around the world.

The End Insulators were specifically designed to provide a strong wire gripping method by routing

DXE Engineering Antenna Wire (DXE-ANTW series) through a series of slots in a serpentine

manner. This allows easy, one-step length adjustment for tuning a dipole without having to

terminate the wires.

DX Engineering Antenna Wire is a 14 gauge, 19 strand copper wire with a black ‘relaxed’ PVC

insulation. This means the wire remains flexible, lays out flat and won’t coil up when tension is

removed. This wire has been proven to be superior for dipole antennas and has consistently

provided years of service without any problems. Even when used in conjunction with heavier

Baluns and long runs of antenna wire, the End Insulators continue to provide excellent holding

capacity without wire slippage or creeping. DX Engineering uses the End Insulators in many of our

products and assemblies, and sells them separately for your own projects.

Over the years, Amateur Radio Operators have used many different wire types to construct

antennas. This prompted our Engineering Department to evaluate the DX Engineering End

Insulators with several other types of commonly used wire.

DX Engineering took samples of four types of wire and End Insulators to an independent test

laboratory and commissioned a series of pull tests. Tests using the four wire types showed varied

results.

The four types of wire tested were: DX Engineering Antenna Wire, Typical ‘Big-Box’ store 14

gauge Insulated Wire, Bare 14 gauge Copper-Clad Steel Wire, 7-Strand Copper-Clad Steel Bare

Wire and Tinned Copper Flexible Weave Wire with no insulation

When the tests were completed, the results for the DX Engineering Antenna Wire proved that it was

still the overall product of choice for use with the End Insulators.

When using the ‘Big-Box’ insulated wire, it was noted that the wire had a very thin clear plastic-

like substance over the insulation and this would shed much like a snake skin, contributing to creep

and slippage.

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The single strand bare copper-clad steel wire was not easy to bend through the End Insulators and

showed a tendency to coil up when relaxed (as expected). But once routed through the serpentine

slots it did show very good resistance to slippage.

The 7-strand bare copper wire showed a tendency to coil up easily when not pulled taut (it had a

“helical memory”) and it would creep and slip faster than compared to the previously tested types.

The flexible weave tinned copper wire was the last one tested. As expected, this type of wire was

found to creep and slip through the serpentine slots most easily.

Following the test laboratory tests, DX Engineering personnel decided to investigate various ways

to enhance the pull strength of the End Insulators. After making a few tests they came upon a very

simple, solderless solution that dramatically increases the termination strength to the point of

breaking the wire before it could creep or pull out.

The ultimate test of the insulator/wire junction does not require a strain gauge to measure. If the

wire itself fails, the results cannot be more conclusive that the installation is the strongest possible.

They used the worst case type of wire - the

Flexible Weave tinned copper wire (with no

insulation).

They routed the wire through the serpentine

slots with an added loop back and through as

shown in the pictures.

Using two trucks as anchors, they tied the ends

securely to the rear of each while one slowly

drove forward. The wire did not slip or creep.

In fact it seemed to grip even tighter. The wire

did stretch slightly and then broke. It broke in the area between the two trucks, not at the End

Insulator. They repeated the test and the results were the same. The DX Engineering End Insulators

held up 100% without failure.

Based on the tests, DX Engineering now suggests routing the wire through the End Insulators as

shown. It will provide extra strength and prevent any creep or slippage of various types of antenna

wire.

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Note: The actual style of end insulators varies depending on which mold was used during

production. Some have the molded words that are raised, some have the words indented into the

part. In all cases, the end insulators are identical in function and use.

Attaching Rope to the End Insulators

DX Engineering Double-braided Polyester

Rope SYN-DBR should be secured to the

Center-T and/or the End Insulators (depending

on your installation) using a non-slip knot.

One suggestion for attaching the rope is shown

in Figure 4. The ends of the rope should be

cauterized with a small flame to prevent the

rope braid from fraying.

Figure 4 - Non-Slip Knot using SYN-DBR

Double-braided Polyester Rope

Support Line

The center-T support top hole is used for the attachment of a “messenger line” that can be strung

above the antenna wire and is used to provide support for the antenna wire and feedline. The use of

the messenger line, which is strongly recommended, will reduce stress on the element wires and

keep the antenna from stretching over

time, which will change its resonant

frequency. This line can be thin

Dacron rope, such as the DX

Engineering SYN-DBR-94-100,

which has a breaking strength of 260

pounds.

Determine the required length for the

messenger line. Ideally, it should

attach to the same structure used for

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the dipole, only above it, forming at least a 30 degree angle between the dipole and the messenger

line. The ends of the rope should be cauterized with a small flame to prevent the rope braid from

fraying.

After determining the proper length needed, form a loop at the mid-point of the messenger rope.

Push this loop through the center-T support top hole, then pull the rest of the rope through the loop.

Center “T” completed showing

support line looped through

top hole.

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Optional Items

TES-2155 - 3M Temflex™ 2155 Rubber Splicing Tape. Conformable self-fusing rubber electrical

insulating tape. It is designed for low voltage electrical insulating and moisture sealing applications. For

outdoor use, it should be protected from UV deterioration with an overwrap of TES-06132

TES-06132 - Scotch® Super 33+. Highly conformable super stretchy tape for all weather applications.

This tape provides flexibility and easy handling for all around performance. It also combines PVC backing

with excellent electrical insulating properties to provide primary electrical insulation for splices up to 600V

and protective jacketing. Both tape products are available from DX Engineering.

TES-06143 - 3M Scotch Super 88 Premium Vinyl Electrical Tape. 3M's Scotch 88 tape is an 8.5 mil

thick, all-weather vinyl electrical insulating tape that maintains conformability for cold weather

applications. For professional use, this tape combines the flexibility of a PVC backing with excellent

electrical insulating properties to provide primary electrical insulation for splices up to 600 V and a

protective jacketing. UL-listed and CSA-certified, this tape is resistant to UV rays, abrasion, moisture,

copper corrosion, alkalis, and acids.

DXE-LLC-1P Ladder Line Coupler is used to consistently splice both 300 and 450

ohm ladder line by maintaining the spacing between the conductors. It includes a

high-impact, insulated splice block, ring terminals and stainless steel hardware.

High impact Black, UV resistant, All Stainless Steel hardware , Use one per splice.

Baluns - High Power Transmission Line Transformers and Baluns with Patented Maxi-Core® Technology

DX Engineering Baluns with Maxi-Core® Technology let your antenna perform to its full potential and reduce the

stresses on your equipment. Allow a better match from the coax impedance to the impedance of the

antenna for lowest SWR, Exhibit an increased operating bandwidth over other baluns, Perform at the

highest levels of efficiency in transmit or receive applications, Allow use of an Antenna Tuner and

High Transmitter Power without damage (DXE "T" Baluns only), Handle High Power (up to 10 KW

per published spec) with minimum energy loss, Reduce RFI, Mounted in sturdy Aluminum boxes

with convenient mounting holes, Unbalanced Output uses PTFE SO-239 Connector, Balanced Input

uses Ceramic Insulators with Stainless Hardware

DXE Part Number Description

DXE-BAL050-H10-AT Balun - 1:1, High Power, For Use With Antenna Tuner

DXE-BAL050-H11-CT Balun - 1:1, High Power, For Use With Antenna Tuner

DXE-BAL200-H10-AT Balun - 4:1, High Power, For Use With Antenna Tuner

DXE-BAL200-H11-CT Balun - 4:1, High Power, For Use With Antenna Tuner

http://www.dxengineering.com/products.asp?ID=170




http://www.dxengineering.com/Parts.asp?ID=92&PLID=50&SecID=10&DeptID=9&PartNo=DXE%2DBAL050%2DH11%2DCT


http://www.dxengineering.com/Parts.asp?ID=144&PLID=50&SecID=10&DeptID=9&PartNo=DXE%2DBAL200%2DH11%2DCT

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Double-braided Polyester Rope

is available in 3/32”, 1/8”, 3/16”, 5/16”, and 7/16” diameter in various length rolls from DX

Engineering. SYN Double-braided Polyester ropes are not weakened by decay or mildew and

provide excellent resistance to abrasion. The color sealed black polyester yarn used in the

braided jacket also protects the cord from damage due to ultra-violet light.

DXE Part Number Description SYN-DBR-94-100 3/32 in. Diameter, Dbl-Braid Dacron/Polyester Rope, 100 ft. Roll

SYN-DBR-125-100 1/8 in. Diameter, Dbl-Braid Dacron/Polyester Rope, 100 ft. Roll







Mastrant Guy Line Rope

Mastrant Guy Line Ropes provide support from booms and elements on big beams to vertical antennas, telescopic

masts, and towers. Their guying rope is of the highest quality for strength and is UV-

protected for extended longevity. Mastrant optimized lines are made from proven modern

materials such as polyester (Mastrant-P) and Dyneema (Mastrant-D and D-F2).

Durability and safety are of prime concern to ensure that an antenna installation remains

fully operational for a long time. Antennas and guy lines are exposed to changing weather

conditions, mechanical strain, UV radiation, humidity, and so forth. Non-conductive

synthetic fibers have all the necessary qualities: high strength, negligible stretch but good

flexibility, long life, low wet-ability, a minimum bending radius adding the ability to tie

knots, good UV radiation resistance, weather durability, and resistance to acids and alkali.

DXE Part Number Mastant Number

Material Approximate

Break Strength

Diameter Length

MSG-MD02100 MD02100 Dyneema 441 lbs 2 mm (.079”) 100 m (328 ft)





MSG-MP02100 MP02100 Polyester 220 lbs 2 mm (.079”) 100 m (328 ft)














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DX Engineering 400MAX Low-Loss 50 ohm Coaxial Cable DXE-400MAX DXE-400MAX - Bulk Cable - No Connectors - Sold by the foot

DXE-400MAX Low-Loss Cable DXE-400MAX-500 DXE-400MAX - Bulk Cable - No Connectors - 500 foot length

DXE-400MAXDX003 DXE-400MAX Cable - PL-259 each end, Tested, 3 foot length









DXE-400MAXDX125 DXE-400MAX Cable - PL-259 each end, Tested, 125 foot length Gas-Injected Foam Won’t Absorb Water

DXE-400MAXDX150 DXE-400MAX Cable - PL-259 each end, Tested, 150 foot length Low-loss, gas-injected foam polyethylene dielectric bonded tape foil covered by a braided copper shield

.405” low-density polyethylene jacket is UV resistant, ideal for outdoor use

Direct bury



DX Engineering 400MAX is premium, low-loss, 50 ohm bulk cable with a special Type III-A, UV-resistant polyethylene jacket that is ideal for outdoor applications, particularly direct-bury. With its larger 10 AWG stranded copper center conductor, 400MAX is specially suited for high-power amateur stations, providing a lower loss solution for long cable runs at any power level. The high-quality construction continues with a gas-injected foam polyethylene dielectric, followed by the highest level of shielding from bonded aluminum tape covered by a tinned copper shield braid. DX Engineering 400MAX Low-Loss 50 ohm Bulk Coaxial Cable uses standard PL-259 or N connectors.

Attenuation/ 100 ft.

Power Rating

Efficiency %

0.3 dB @ 5 MHz 6.9 kW 93 %

0.5 dB @ 10 MHz 4.8 kW 90 %

0.8 dB @ 30 MHz 2.8 kW 83 %

1.1 dB @ 50 MHz 2.1 kW 79 %

1.8 dB @ 150 MHz 1.2 kW 65 %

3.3 dB @ 450 MHz 0.7 kW 47 %

Velocity Factor: 84% (0.84) Minimum Bend

Radius:

6” Repeated Bends

2.5” Fixed Install

DX Engineering RG-213/U MIL-Spec 50 ohm Coaxial Cable 213U DXE-213U DXE-213 - Bulk Cable - No Connectors - Sold by the foot DXE-213U MIL-Spec Cable

DXE-213U-500 DXE-213 - Bulk Cable - No Connectors - 500 foot length

DXE-213UDX003 DXE-213 Cable - PL-259 each end, Tested, 3 foot length







DXE-213UDX100 DXE-213 Cable - PL-259 each end, Tested, 100 foot length Solid Dielectric Won’t Absorb Water

DXE-213UDX125 DXE-213 Cable - PL-259 each end, Tested, 125 foot length Solid Polyethylene Dielectric

.405 Type II-A jacket is non-contaminating and UV-resistant, suitable for outdoor use

Direct-bury

Braided copper shield

Direct-bury




DX Engineering RG-213/U is a low-loss, 50 ohm, MIL-spec bulk coaxial cable with a non-contaminating Type II PVC jacket. Specially manufactured for DX Engineering, RG-213/U cable is perfect for outdoor use due to its excellent UV resistance and durability in direct-bury applications. Specially suited for high-power amateur stations, RG-213/U provides a lower loss solution for long cable runs at any power level. Featuring a solid polyethylene dielectric, DX Engineering RG-213/U uses crimp and standard PL-259 and N connectors normally designed for RG-8 sized cables.


Power Rating

Efficiency %

0.4 dB @ 5 MHz 4.9 kW 90 %

0.6 dB @ 10 MHz 3.4 kW 87 %

1.0 dB @ 30 MHz 2.0 kW 79 %

1.3 dB @ 50 MHz 1.5 kW 73 %

2.4 dB @ 150 MHz 0.9 kW 57 %

Velocity Factor: 66% (0.66) Minimum Bend Radius: 5”

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DX Engineering 8U Low-Loss RG-8U 50 ohm Coaxial Cable DXE-8U DXE-8U - Bulk Cable - No Connectors - Sold by the foot

DXE-8U Low-Loss Foam Dielectric Cable DXE-8U-500 DXE-8U - Bulk Cable - No Connectors - 500 foot length

DXE-8UDX002 DXE-8U Cable - PL-259 each end, Tested, 2 foot length









DXE-8UDX100 DXE-8U Cable - PL-259 each end, Tested, 100 foot length Gas-Injected Foam Won’t Absorb Water

DXE-8UDX125 DXE-8U Cable - PL-259 each end, Tested, 125 foot length Low-loss, gas-injected foam polyethylene dielectric

.405” high-flex PVC jacket

Low-loss foam dielectric

Braided copper shield




DX Engineering RG-8/U bulk coaxial cable is a low-loss corrected 50 ohm coaxial cable with a black vinyl jacket and foam polyethylene dielectric. Specially suited for high-power amateur stations, RG-8/U provides a lower loss solution for long cable runs at any power level. High reliability and low loss are key points when considering this cable. DX Engineering RG-8/U uses standard crimp and PL-259 and N connectors.


Power Rating

Efficiency %

0.3 dB @ 5 MHz 5.4 kW 93 %

0.5 dB @ 10 MHz 4.1 kW 90 %

0.9 dB @ 30 MHz 2.2 kW 81 %

1.2 dB @ 50 MHz 1.8 kW 77 %

2.2 dB @ 150 MHz 1.0 kW 60 %

Velocity Factor: 81% (0.81) Minimum Bend

Radius:

6” Repeated Bends

2.5” Fixed Install

Technical Support If you have questions about this product, or if you experience difficulties during the installation, contact DX

Engineering at (330) 572-3200. You can also e-mail us at:

[email protected]

For best service, please take a few minutes to review this manual before you call.

Warranty All products manufactured by DX Engineering are warranted to be free from defects in material and workmanship for a period of one (1) year from date of shipment. DX

Engineering’s sole obligation under these warranties shall be to issue credit, repair or replace any item or part thereof which is proved to be other than as warranted; no

allowance shall be made for any labor charges of Buyer for replacement of parts, adjustment or repairs, or any other work, unless such charges are authorized in advance by

DX Engineering. If DX Engineering’s products are claimed to be defective in material or workmanship, DX Engineering shall, upon prompt notice thereof, issue shipping

instructions for return to DX Engineering (transportation-charges prepaid by Buyer). Every such claim for breach of these warranties shall be deemed to be waived by

Buyer unless made in writing. The above warranties shall not extend to any products or parts thereof which have been subjected to any misuse or neglect, damaged by

accident, rendered defective by reason of improper installation, damaged from severe weather including floods, or abnormal environmental conditions such as prolonged

exposure to corrosives or power surges, or by the performance of repairs or alterations outside of our plant, and shall not apply to any goods or parts thereof furnished by

Buyer or acquired from others at Buyer’s specifications. In addition, DX Engineering’s warranties do not extend to other equipment and parts manufactured by others

except to the extent of the original manufacturer’s warranty to DX Engineering. The obligations under the foregoing warranties are limited to the precise terms thereof.

These warranties provide exclusive remedies, expressly in lieu of all other remedies including claims for special or consequential damages. SELLER NEITHER MAKES

NOR ASSUMES ANY OTHER WARRANTY WHATSOEVER, WHETHER EXPRESS, STATUTORY, OR IMPLIED, INCLUDING WARRANTIES OF

MERCHANTABILITY AND FITNESS, AND NO PERSON IS AUTHORIZED TO ASSUME FOR DX ENGINEERING ANY OBLIGATION OR LIABILITY NOT

STRICTLY IN ACCORDANCE WITH THE FOREGOING.

©DX Engineering 2017

DX Engineering®, DXE®, DX Engineering, Inc.®, Hot Rodz®, Maxi-Core®, DX Engineering THUNDERBOLT®, DX Engineering Yagi Mechanical®, EZ-BUILD®,

TELREX®, Gorilla Grip® Stainless Steel Boom Clamps, Butternut®, SkyHawk™, SkyLark™, SecureMount™, OMNI-TILT™, RF-PRO-1B®, AFHD-4® are

trademarks of PDS Electronics, Inc. No license to use or reproduce any of these trademarks or other trademarks is given or implied. All other brands and product names are

the trademarks of their respective owners.

Specifications subject to change without notice.

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