Vertical Antenna For Hi-z Antennas` Receive

Transcript

Vertical Antenna for Hi-Z Antennas’ Receive Antenna Systems DXE-AL24 DXE-AL24-INS-Revision 1 © DX Engineering 2016 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] Table of Contents Introduction 2 Features 2 Manual Updates 2 Warning 3 Tools Required 3 DXE-AL24 Parts List 4 Additional Material Needed, Not Supplied 4 Suggested Parts Not Included 4 Installation 5 Site Selection Mounting Pipe 5 5 Assembly 6 Mounting Plate Assembly Assembling the Vertical Sections Element Assembly Mating the Vertical Elements to the Mounting Plate 6 10 11 13 Attaching the AL-24 to the Mounting Pipe 14 Guying a Vertical Antenna System 16 Optional Accessory Items 17 Technical Support and Warranty 19 -1- Introduction The DX Engineering DXE-AL24 is a vertical antenna specifically designed for use with the Hi-Z Antennas’ Receive Antenna Systems using the Hi-Z Plus-6 High Impedance Amplifier. The DXE-AL-24 vertical antenna is built with 6063 corrosion-resistant Aluminum Tubing Elements, custom drilled Mounting Plate, Stainless Steel V-Clamps, Cast Aluminum Saddle Clamps and Stainless Steel hardware, this antenna is very durable and attractive. Hi-Z Antennas has been producing excellent low band receiving systems for many years. Hi-Z’s focus on improvements to low noise components and array systems has been a singular goal that has resulted in high performance receiving antennas for Amateur and radio enthusiasts, especially for 160 meters, 80 meters and AM DXing. Hi-Z Antennas’ specialized systems have been pushing the boundaries of weak signal HF reception with directional arrays that have been installed and used around the world. They are recommended by some of the world’s leading contesters and DXers and are now available exclusively from DX Engineering. Refer to the Hi-Z Antennas’ receive systems for various layout schemes for the particular Hi-Z system you are installing. Hi-Z products are available from DX Engineering and can be seen on the DX Engineering web site at: www.DXEngineering.com DXE-AL24 Features The DXE-AL-24 vertical antenna system includes the antenna elements, stainless steel clamps, cast aluminum clamps, custom mounting plate and stainless steel hardware. • 24 feet 1 inch overall height from ground level • Drilled Aluminum Mounting Plate • Rugged base to sleek top for low wind resistance • Custom made for use with the Hi-Z Plus-6 High Impedance Amplifier • Special Low Capacitance Fiberglass Element to Base Mating Design 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 contact DX Engineering ([email protected]) for the latest revision manual. -2- 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. Tools Required 5/16”, 3/8”, 7/16”, and 1/2” wrenches - or 5/16”, 3/8”, 7/16”, and 1/2” sockets and drive Medium size flat blade screwdriver or 5/16” nut driver for the element clamps Medium size flat blade screwdriver or 1/4” nut driver for the smaller element clamps Phillips head screwdriver Tape measure Felt-tip marker -3- DXE-AL24 Parts List Qty 1 2 2 2 4 2 2 2 4 1 1 1 2 1 1 1 1 1 1 1 Description Antenna Mounting Plate, Aluminum 2" V-Saddle Clamp, Stainless Steel with Stainless Steel Hardware 0.75" Saddle Clamp, Cast Aluminum with Stainless Steel Hardware 10-24 x 3/4" Long Hex Head Bolt, Stainless Steel #10 Flat Washer, Stainless Steel #10 External Tooth Washer, Stainless Steel #10 Split Washer, Stainless Steel 10-24 Hex Nut, Stainless Steel Stainless Steel Machine Screw, Metric M4 x 40 mm, Phillips Pan Head 0.875" Element Clamp, Stainless Steel 0.750" Element Clamp, Stainless Steel 0.625" Element Clamp, Stainless Steel Wire Assembly, 14 AWG, Black Insulation with #10 Ring Terminals, 5.25" Long Fiberglass Rod, Solid, 0.750" OD x 18” Long 0.875" Element Clamp with Welded Stud and Stainless Steel Hardware 0.875" OD Element Tube, Aluminum, 0.058” Wall, 72” Long, Slit Both Ends 0.750" OD Element Tube, Aluminum, 0.058" Wall, 72" Long, Slit 1 End 0.625" OD Element Tube, Aluminum, 0.058" Wall, 72" Long, Slit 1 End 0.500" OD Element Tube, Aluminum, 0.058" Wall, 72" Long, Slit 1 End Black Vinyl End Cap 0.437" ID Additional Material Needed but not Supplied: • • Antenna Mounting - Steel mounting pipe, up to 2.0″ OD, 0.25″ wall thickness, 3 feet long. The standard 1-1/2" galvanized water pipe (with its 1.9" OD) is just fine for this application and can usually be found at your local home building supply store. Quik-Set Concrete - Mounting pipe installation (type depends on your landscape) Suggested Parts Not Included • JTL-12555 Jet-Lube SS-30 - To ensure good connection for aluminum element sections and also used on the threads of Stainless Steel Hardware to prevent galling and aid in proper tightening torque. -4- Installation Site Selection Select a mounting location clear from power lines, structures and other antennas by a minimum of 24 feet. Consider overhead power lines, utility cables and wires. The vertical should be mounted away from local noise sources or other metallic objects which can re-radiate noise and affect the receive antenna performance. Mounting Pipe Use a customer supplied thick-walled galvanized steel mounting pipe at least 3 feet long. This will allow approximately 2 feet or more to be below ground and 11 inches above ground. A thick-walled steel pipe 1-3/4" OD to 2" OD maximum is recommended with a minimum thickness of 1/8" (1/4" preferred) should be used. The standard 1-1/2" galvanized water pipe (with its 1.9" OD) is just fine for this application and can usually be found at your local home building supply store. For permanent mounting, use a post-hole digger to make the hole deep enough to accommodate at least 2 feet of pipe and a couple inches of gravel at the bottom for drainage. Set the mounting pipe on the gravel, use the pre-mix concrete to fill around the pipe, adding water and mixing as you fill or mix the concrete first, then pour in the hole (depends on the type of concrete you purchase). Fill the hole until the concrete is level with the ground around it. Use levels on the mounting pipe as you fill the hole to be sure is vertically straight. Allow to set overnight. Your location, landscape and ground conditions may require different mounting solutions in order to have the steel mounting pipe and the vertical antenna in a secure position. Note: Galvanized steel, rather than aluminum, is much more suitable for mounting in concrete. Aluminum will quickly corrode due to incompatibility with the materials used to make concrete. -5- Assembly The DXE-AL24 shipping boxes contain the vertical tubing element sections, mounting plate, two DXE-SSVC-2P 2" V-Bolt assemblies, two cast aluminum saddle clamps, three stainless steel element clamps, two custom wire assemblies with ring terminals, one stainless steel element clamp with welded stud, one solid fiberglass mating rod, a black vinyl cap and stainless steel hardware. Carefully un-box the antenna and separate the various parts. All four of the aluminum tubing element sections are 72" long. The bottom 7/8" OD aluminum tube element is slit on both ends. The other three aluminum tubing elements are slit on one end. Note: JTL-12555 Jet-Lube SS-30 should be used between all antenna element sections. JetLube is an electrical joint compound to affect a substantial electrical connection between metal parts such as telescoping aluminum tubing or other antenna pieces. It ensures high conductivity at all voltage levels by displacing moisture and preventing corrosion or oxidation. It should also be used on all clamps, bolts and stainless steel threaded hardware to prevent galling and to ensure proper tightening. Note: The following assembly instructions are based on using a 2" OD Mounting Pipe. Mounting Plate Assembly For reference, Figure 1 shows a completed mounting plate assembly with the Hi-Z Plus-6 High Impedance Amplifier. Please refer to this figure when performing the following assembly procedure. Figure 1 - Completed Mounting Plate Assembly Reference Drawing -6- Locate the Aluminum Mounting Plate and the two 3/4” U-Bolt Cast Aluminum Saddle Clamps with stainless steel mounting hardware. Loosely assemble the two Cast Aluminum Saddle Clamps to the mounting plate as shown in Figure 2. Figure 2 - Aluminum Saddle Clamps Install the solid Fiberglass Rod through the two aluminum Saddle Clamps as shown in Figure 3. Note the solid Fiberglass Rod bottom will be flush with the bottom of the Mounting Plate. Tighten the aluminum Saddle Clamps evenly taking care not to crush or damage the solid Fiberglass Rod. Tighten the hex nuts evenly until the split washers are flush. Figure 3 -7- Locate the two DXE-SSVC-2P Stainless Steel V-Clamps and stainless steel mounting hardware. Loosely install the two V-Clamps on the back side of the mounting plate as shown in Figure 4. Figure 4 - V-Saddle Clamp Installation To mount the Hi-Z Plus-6 High Impedance Amplifier to the mounting plate, the four screws that hold the lid on the case need to be removed and replaced with longer screws that go through the Mounting Plate and secure the amplifier. Using a Phillips head screwdriver, carefully remove the four screws as shown in Figure 5. Figure 5 - Four Case Screws Removed -8- Turn the case over and place the Hi-Z Plus-6 High Impedance Amplifier on the mounting plate as shown in Figure 6. Note the position of the two threaded studs and the label on the Hi-Z Plus-6 High Impedance Amplifier when properly placed on the Mounting Plate. While holding the Hi-Z Plus-6 High Impedance Amplifier case and lid firmly in place, install the four new metric screws (Stainless Steel Machine Screw, Metric M4 x 40 mm, Phillips Pan Head ) through the Mounting Plate into the Hi-Z Plus-6 High Impedance Amplifier. Tighten snugly, but do not over tighten which may damage the plastic case. Figure 6 - Attaching the Hi-Z Plus-6 High Impedance Amplifier to the Mounting Plate Using the 10-24 x 3/4” Hex Head Bolt and #10 hardware, install the grounding bolt and hardware in the hole near the bottom of the Mounting Plate as shown in Figure 7. Install it snugly so it won’t come loose while handling. A later step in this procedure will have you installing your ground connection at this point. Figure 7 - Ground Connection Hardware -9- Using the second 10-24 x 3/4” Hex Head Bolt, #10 hardware and wire with two ring terminals, install the grounding bolt and hardware and wire in the hole near the top of the Mounting Plate as shown in Figure 8. Connect the other end of the wire with terminals to the “Ground” connection on the Hi-Z Plus-6 High Impedance Amplifier case as shown in Figure 8. Figure 8 - Ground Connection from Mounting Plate to Hi-Z Plus-6 High Impedance Amplifier Assembling the Vertical Element Sections Caution Aluminum tubing edges can be very sharp. Take precautions to ensure you do not get accidentally cut. The raised particles and shavings that appear when the aluminum tubing is machined are referred to as burrs, and the process by which they are removed is known as deburring. Deburring is a finishing method used in manufacturing. Our aluminum tubing is machine cut on both ends and machine slit on one end. Although DX Engineering manufactured aluminum tubing is deburred, you should further assure that there are no ragged edges or protrusions. Use the DXE-UT-KIT-DBR for this operation. - 10 - Clean the inside of the aluminum tubing to clear out any dirt or foreign material that would cause the aluminum tubing sections to bind during assembly. Do not use any type of oil or general lubricant between the aluminum tubing sections. Oils or general lubricants can cause poor electrical connections for radio frequencies. Clean the outside of the aluminum tubing to clear any dirt or foreign material that would cause the clamps to malfunction during assembly. The use of JTL-12555 Jet-Lube SS-30 is highly recommended. Jet-Lube is an electrical joint compound which effects a substantial electrical connection between metal parts such as telescoping aluminum tubing or other antenna pieces. Using Jet-Lube assures high conductivity at all voltage levels by displacing moisture and preventing corrosion or oxidation. When assembling the aluminum tubing sections, ensure the area is clear of grass, dirt or other foreign material that could cause problems during assembly of the closely fitted telescoping sections. Element Assembly Locate the four aluminum element tubes. Using a felt tip pen and tape measure, mark the 0.5” OD, 0.625” OD and 0.75” OD tubes as shown in Figure 9 at 4” from the end. Note the 0.5” OD tube is turned around compared to the other aluminum element tubes. The 0.875 OD is not marked. Figure 9 - Marking the Aluminum Tube Elements Assemble the vertical sections in an area that is flat and has sufficient room for the length of the antenna during assembly. Lay the tubing out in descending OD sizes. Orient the slits in the tubes toward as shown in Figure 9. The bottom 0.875" OD base section has no slits. Each tubing section is inserted 4" into the next larger tube. Assembly is easier if the overlaps in the tubing sections are pre-marked. - 11 - Locate the three Stainless Steel Element Clamps. Stainless Steel Element Clamp 0.875” (7/8”) - Element Clamp, 5/16 Drive Nut 0.75” (3/4”) - Element Clamp, 1/4” Drive Nut 0.625” (5/8”) - Element Clamp, 1/4” Drive Nut Quantity 1 1 1 Figure 10 Refer to Figures 10 for element clamp sizes and locations (Figure 11). Slide the clamps over each section before putting them together. Align the clamps on each section facing the same direction. For final assembly, all the clamps should be positioned approximately 1/4” from the top of each section and the body of the clamp should be positioned between the slits as shown in Figure 10. Making sure dirt or grass does not adhere to the sections to be joined, insert the marked end of an element tube into the next sized element tube until the 4 inch mark on the element tube is even with the top of the larger element tube section. Position one of the element clamps. Make sure the body of the element clamp is positioned between the slits and tighten securely (Figure 10). Repeat the procedure with the marked end of the elements and the other aluminum element tubes using one of the element clamps as you work your way up the antenna length. Continue mating the smaller tubes inside the larger ones. Double-check the vertical sections you have just assembled. Figure 11 - Element Clamp Locations Install the Black Vinyl Cap on the end of the 0.5” OD Aluminum Tube as shown in Figure 11. Assemble the Wire with Ring Terminals to the 0.875” OD Element Clamp with Welded Stud using the hardware as shown in Figure 12. Figure 12 - 12 - Mating the Vertical Elements to the Mounting Plate Assembly Using Figure 13 as the reference, mark a line with a felt tip pen 1-1/2” from the top of the Mounting Plate on the Fiberglass Rod. Slip the Element Clamp with welded stud and wire over the Fiberglass Rod on the mounting plate. Mate the assembled vertical elements to the Fiberglass Rod, sliding the element down to the 1-1/2” mark and tighten the clamp in place with the worm drive part of the clamp in between slits (as in Figure 10) on the 0.875” OD element. Orient the welded stud as shown in Figure 13. Tighten the clamp in place. Figure 13 Connect the other end of the wire with terminals to the “Antenna” connection on the Hi-Z Plus-6 High Impedance Amplifier case as shown in Figure 14. Figure 14 - Antenna Connection - 13 - Attaching the Completed DXE-AL24 Antenna to the Customer Supplied Mounting Pipe The completed antenna can be slipped over the customer supplied installed mounting pipe. There should be approximately 1” of clearance between the bottom of the Mounting Plate and the ground level and approximately 1/4” of mounting pipe above the top edge of the Mounting Plate. Refer to Figure 16 which shows the completed antenna. Once in place, tighten the Hex Nuts for the two Stainless Steel V-Clamps evenly. Figure 15 - Attaching Antenna to Mounting Pipe Hi-Z recommends using a 3 to 4 foot Ground Rod (depending on soil conditions) located near the antenna base. The bottom ground connection hardware that was installed earlier is the ground rod connection point. RG-6 coaxial cable with an F-Connector is connected to the bottom of the Hi-Z Plus-6 High Impedance Amplifier. This connection should be weather sealed. The TES-2155 3M Rubber Splicing Tape and TES-06132 Scotch Super 33+ are ideal for this purpose.(See Optional Items for details). The Antenna and Ground Connections may be weatherproofed by adding some Black Non-Acetic RTV. The PTX-82180 Black RTV is ideal for this purpose.(See Optional Items for details). - 14 - Figure 16 - Finished Antenna Assembly (Drawing not scale) - 15 - Guying a Vertical Antenna System Guying of vertical antennas is always recommended for stability. Additionally, if your area encounters severe wind velocities or icing conditions, simple guying will reduce the possibility of antenna mechanical failure. Using the DXE-GUY kits, you can install three or four guy ropes per vertical antenna starting approximately 1/2 the way up the vertical antenna to ground level. Guying should be tightened just enough to permit the antenna to swing a few inches. The ends of the ropes are tied to the earth anchors that are screwed into the ground at about the same angle as the ropes will be. Do not use wire for guys on a vertical antenna, only ropes. Wire guys will affect and reduce the performance of a vertical ground mounted antenna. Note: Depending on wind and ice conditions, additional guying may be necessary. - 16 - Optional Accessory Items Hi-Z Antennas has been producing excellent low band receiving systems for many years. Hi-Z’s focus on improvements to low noise components and array systems has been a singular goal that has resulted in high performance receiving antennas for Amateur and radio enthusiasts, especially for 160 meters, 80 meters and AM DXing. Hi-Z Antennas’ specialized systems have been pushing the boundaries of weak signal HF reception with directional arrays that have been installed and used around the world. They are recommended by some of the world’s leading contesters and DXers and are now available Exclusively from DX Engineering. Refer to the Hi-Z Antennas’ receive systems for various layout schemes for the particular Hi-Z system you are installing. Hi-Z products are available from DX Engineering and can be seen on the DX Engineering web site at: www.DXEngineering.com DXE-KIT-DBR - DX Engineering Tube Deburring Tool Kit Designed and manufactured in the USA, DX Engineering Tube Deburring Tools feature hardened steel cutting surfaces arranged in a conical shape. Both the interior and exterior of the tool's cone may be used to smooth the rough edges of the inside and outside of the cut ends of pipe and tubing. Its rotational symmetry allows easy reaming and deburring rough-cut tubing edges with minimum effort. The UT-2125 is usable on all tubing and pipe sizes from 3/8” to 2-1/8” OD. The UT-3500 covers sizes from 1-7/8” to 31/2” OD. The complete tool kit, model UT-KIT-DBR, includes both sizes of conical tools, a small hand deburrer and a half round file. DX Engineering Tube Deburring Tools are reversible, so they are ideal to debur both ID and OD of aluminum tubing prior to telescoping the sections together. These tools assure a smooth fit without galling and seizing that can occur with the slightest roughness. Only a couple of revolutions with very light pressure is needed to produce excellent results. DX Engineering Tube Deburring Tools may be used to debur tubing and pipe made of aluminum, fiberglass, copper, steel, plastic pipe, etc. PTX-82180 Permatex Ultra Black RTV Silicone DX Engineering Approved RTV Sealant by Permatex. Normal RTV gives off acetic acid when it cures. That's the vinegar smell. The acetic acid causes the corrosion. DX Engineering has located a Neutral Cure RTV made right here in Ohio that is non-corrosive and is safe for sealing those baluns and other electronic gear that are going to be out in the weather. Applies just like "normal" RTV, dries in one hour and cures in 24 hours at 70 degrees F. And it doesn't smell like vinegar. Permatex Ultra Black RTV silicone adhesive is designed to provide a waterproof, flexible, weatherresistant seal around metal, glass, rubber, and more. It's made to withstand temperatures of up to 500 degrees F. 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 - 17 - 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. DXE-J-1 Grounding Clamp DX Engineering J-1 Grounding Clamps are designed for use on the ground conductor to pipe connection. They will bond #2 stranded through #10 solid copper wire to 1/2 in. through a 1 1/3 in. copper ground rod. The clamps are manufactured from cast bronze and use stainless steel screws for maximum durability. DXE-GUY-Kits - Guying Kits for Vertical Antennas Some vertical manufacturers indicate their antennas do not need guying. During times of high winds or ice loading, some of these verticals may sustain damage or fail altogether. With the small amount of effort needed to install a four point guying system, the risk hardly seems worth taking. A four-point guying scheme provides the best mechanical advantage to reduce wind stress, regardless of direction. A four point guying system is recommended for use with a DX Engineering Tilt Base, because just one of the guy ropes has to be loosened when you tilt the vertical down. The remaining guys help stabilize the vertical in three directions when being raised. The guying kits are ideal for fixed or portable installations. DXE-GUY100-KIT DXE-GUY200-KIT DXE-GUY400-KIT DXE-GUY1000-KIT 4 - Heavy Duty screw-in earth anchors with eyelets 1 - 100 ft. Roll - UV resistant, 3/32 Double-Braided Dacron Polyester Rope SYN-DBR-94-100 4 - Heavy Duty screw-in earth anchors with eyelets 2 - 100 ft. Rolls - UV resistant, 3/32 Double-Braided Dacron Polyester Rope SYN-DBR-94-100 4 - Heavy Duty screw-in earth anchors with eyelets 4 - 100 ft. Rolls - UV resistant, 3/32 Double-Braided Dacron Polyester Rope SYN-DBR-94-100 4 - Heavy Duty screw-in earth anchors with eyelets 1 - 1000 ft. Roll - UV resistant, 3/32 Double-Braided Dacron Polyester Rope SYN-DBR-94-1000 - 18 - 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 2016 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™ 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 revision without notice. - 19 -