DX Engineering DXE-SA80-AOK User manual

80 Meter Tuning Coil Add-On Kit

for the DXE-ATSA-1

Auto Tuned Multi-Band HF

Stealth Antenna System

DXE-SA80-AOK

DXE-SA80-AOK-INS Revision 0f

DXE-SA80-AOK shown installed on the DXE-ATSA-1

DX Engineering 2017

1200 Southeast Ave. - Tallmadge, OH 44278

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

Fax: (330) 572-3279 ∙ E-mail: DXEngineering@DXEngineering.com

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80 meter Tuning Coil - DXE-SA80-AOK

The DXE-SA80-AOK 80 meter coil add-on kit is custom designed for use with the DXE-ATSA-1

antenna system. In some ATSA antenna installations with excellent radial systems, achieving the

best SWR on a vertical element for 80 meters may be difficult without some means of adjusting

feedpoint impedance.

The DXE-SA80-AOK allows easy adjustment for lowest SWR. The DXE-SA80-AOK will aid in

tuning a low impedance antenna to the minimum SWR in the customer selected portion of the 80

meter band without affecting operation on the other, higher frequency bands. The #12 AWG coil

wire is tin-nickel plated for high power handling, corrosion resistance, ease of soldering and long

term reliability.

Parts List for the DXE-SA80-AOK

Quantity

Description

DX Engineering custom variable inductor coil for 80 meters for use on the DXE-ATSA-1

with Machined "L" Bracket, connection wire and ring terminal attached

Machined Insulated Mounting Bracket

10-24 Stainless Steel Nyloc Nut

10-24 x 1" Stainless Steel Hex Head Bolt

#10 Stainless Steel External Tooth Washer

#10 Stainless Steel Flat Washer

#10 Stainless Steel Hex Nut

Installing the Optional 80 meter Tuning Coil - DXE-SA80-AOK

The DXE-SA80-AOK 80 meter coil add-on kit is custom designed for use with the ATSA antenna

system. In some ATSA antenna installations with excellent radial systems, achieving the best SWR

on a vertical element for 80 meters may be difficult

without some means of adjusting feedpoint impedance.

The DXE-SA80-AOK allows easy adjustment for

lowest SWR. The DXE-SA80-AOK will aid in tuning

a low impedance antenna to the minimum SWR in the

customer selected portion of the 80 meter band without

affecting operation on the other, higher frequency bands.

The #12 AWG coil wire is tin-nickel plated for high

power handling, corrosion resistance, ease of soldering

and long term reliability.

Refer to the shelf hole layout drawing in Figure 1.

There is one radial wire mounting hole used to mount Figure 1

the DXE-SA80-AOK. Remove the existing radial wire

and hardware. Move the removed radial wire to the

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next radial mounting hole and connect it there (double up on one radial mounting hole). Mount the

insulated coil mounting bracket to the "L" bracket on the coil assembly using the hex head bolt, two

flat washers, star washer and Nyloc nut as shown in Figure 2. When installing stainless steel

hardware, it is suggested that UMI-81343, UMI-81464, DXE-NSBT8 or DXE-NMBT8 - Never-

Seez or Anti-Seize be used to prevent thread galling on stainless steel.

Figure 2

Install the coil assembly to the mounting shelf using the hex bolt, two flat washers, one external

tooth washer and Nyloc hex nut as shown in Figure 3.

Figure 3

The wire with ring terminals goes from the end of the coil to the MatchBoxx™ "ANT" connection

as shown in Figure 4.

Figure 4

The end of the 45 foot vertical antenna element is routed through previously mounted insulator to

the coil insulator. The wire then goes through the large hole on the coil insulated bracket to the end

of the coil (end where the "L" bracket is attached) and is held in place with one external tooth

washer and stainless steel hex nut as shown in Figure 5.

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Figure 5

The DXE-ATSA-1 manual has additional information about the ATSA-1 and the SA80-AOK.

Tuning the DXE-SA80-AOK

The coil is shipped with the tap set at the third turn in the coil. This setting should be the correct

position for most installations. Perform on-air tuning in the 80 meter band. Adjustments to the coil

tap may be made by moving the tap one turn at a time, and the re-test the tuning. Once a satisfactory

(low SWR, easy to tune) setting is made, the coil tap may be soldered in place on the coil. Soldering

the tap in place on the coil will ensure that over time, the coil setting will remain solid and

environmental issues (dust, dirt, dirty air) will not affect the setting.

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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