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DX Engineering Aluminum Tubing
DX Engineering High-Strength Aluminum Tubes are ideal for your antenna building projects. It is made available in sizes that fit into and over the next, with close tolerances specifically designed for strength when joined and overlapping only by a few to several inches, to build Yagi, Moxon or vertical antenna elements. NOTE: This tubing is NOT intended for each size to telescope completely into the full length of the next; it cannot be used for telescopic mast building. DX Engineering aluminum tubing is manufactured to very close tolerances. This provides the greatest amount of surface contact between nesting tubes for mechanical and electrical stability. Due to the close tolerance, any burrs, dirt, grit or other foreign material, as well as dents, dings and unseen bending or crushing suffered during shipment will cause binding that prevents this aluminum tubing from fully nesting. 6063-T832 seamless drawn aluminum tubing is available in 3, 6 and 12 ft. lengths. 6063-T832 tubing provides good resistance to general corrosion, including stress corrosion cracking, and an excellent surface appearance. Use a series of 3 ft. lengths to build an element that tapers more quickly for lower wind-resistance applications. Use a series of 6 ft. lengths to make an element that tapers more slowly for greater strength and bandwidth. The 12 ft. lengths are great for HF Yagi construction. Most sizes (except 12 ft.) are available slit on one end for use with DX Engineering stainless steel element clamps. If un-slit ends are required for your applications, merely insert the slit end into the next larger size in the stack and use your own attachment method. 6063-T832 tubing features a 0.058 in. wall thickness and is available in 1/8 in. increments from 3/8 in. to 2-1/8 in. O.D. 3003-H14 drawn aluminum tubing features a 0.035 inch wall thickness and a 1/4 inch outside diameter. Each piece is supplied with non slit ends and is available in both 3 foot and 6 foot lengths, making them ideal for your antenna building projects. If your setup requires maximum strength at very long assembly lengths, then choose DX Engineering 6061-T8 tubing. This heavy-duty version features a 0.120 in. wall thickness and is available in 1/4 in. increments from 1-1/2 in. to 3 in. O.D. Packaged shipments of 6 ft. tubing have oversize shipping fees, regardless of the number of 6 ft. pieces. Therefore, order more 6 ft. pieces to spread oversize fees over more tubing for a more cost effective shipment. Tubing that is 12 ft. long MUST be shipped by truck freight. If you need many pieces of the same size in a 12 ft. tube length, then buying DX Engineering High-Strength Aluminum Tubing Bundles (elsewhere in our catalog) maximizes the economy of scale for your shipping costs. NOTE: Whenever the DX Engineering "Documentation" tab is available, please look at the associated files for additional product information. Order DX Engineering High-Strength Aluminum Tubing here.
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Anderson Power Products® DC Power Connectors
Powerpole® Connectors with Plated Silver Contacts maximize performance and reliability by offering up to 10,000 mating cycles before failure. They are even recommended for circuit interrupt or hot-plug applications. That means you won't have to shut down your shack supply every time you want to disconnect a peripheral device. Powerpole® Standard Housings allow you to color code, or just change the color of, your Powerpole® connectors. Their standard housings are available in a wide array of colors. The metal Power Contacts are not included with these housings, but are available separately. These standard housings will not mate with the finger-proof housings. Powerpole® Ultrasonically Welded Standard Housings feature connector housings that are ultrasonically welded to create a one-piece connector unit using an APP® special process. After welding, retaining pins are no longer required to secure the stacked housings to each other. This allows Powerpole® 15-45 connectors to be used as durable one-piece connector headers. Retention clips prevent Powerpole® 15-45 blocks from unintended disconnection. They feature a small finger tab for easy insertion and removal. Once your Powerpole® connection has been made, inserting a retention clip will keep the connection from easily pulling apart. Organize and connectorize! Get rid of rats nests and tangled inefficient power connections. Order Anderson Power Products® DC Power Connectors from DX Engineering!
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CTU Books 2017 Contest University Textbooks
CTU Books 2017 Contest University Textbooks are now available! Gain the insider's knowledge of contesting, station design and preparations. Discover what others have learned over decades of operations, as well as new techniques, equipment and contesting information. Skip the trial and error; learn how to get the edge to improve your scores and put your station in the winner's circle! Now into a second decade of operation, Contest University has presented dozens of programs around the world to teach Radiosport techniques and practices. In addition to the US and Puerto Rico, seven countries have hosted CTUs — Australia, Russia, Germany, Italy, England, Brazil, and Finland. More than 4,000 students have attended these classes where over 90 CTU instructors have shared their contesting experience and expertise. CTU program content changes from year to year to cover a myriad of topics. In the words of CTU Chairman Tim Duffy, K3LR, "Contest University is a platform for sharing ideas and learning new ways to enjoy Amateur Radio Contesting." 2017 Contest University Textbooks contain, in print, the complete sets of slides presented by each professor at CTU at the 2017 Dayton Hamvention™. Topics and Presenters include: * It's A Fun Game, Let's Operate the Right Way; Joel Harrison, W5ZN * How to Improve Your Transmitting Antennas for Low Solar Activity; Frank Donovan, W3LPL * Introduction to Introduction to Contesting (Be The Elmer!); Ward Silver, N0AX * CW and RTTY Skimmer and the Reverse Beacon Network; Robert A. Wilson, N6TV * Optimizing VHF Contest Scores Utilizing JT Digital Modes; Joel Harrison, W5ZN * Easy to Build Low Band Receiving Antennas for Small and Large Lots; Frank Donovan, W3LPL * A Deep Dive into Stacking Yagis; Greg Ordy, W8WWV * Grounding & Bonding for the Little Pistol and Medium Gun; Ward Silver, N0AX * RTTY Contesting, A to Z; Ed Muns, W0YK * How to Adapt Your DX Contest Strategies for Low Solar Activity; Frank Donovan, W3LPL * Little Pistols, Bigger Scores; Dan B. Zeitlin, K2YWE * The Advantages of Waterfall Displays for Contesting and DXing; Robert A. Wilson, N6TV * Advanced Topics in RTTY Contesting; Ed Muns, W0YK * The Wonderful World of Space Weather; Dr. Tamitha Mulligan Skov * Antenna/Tower Reliability; Tim Jellison, W3YQ/KL7WV * Disruptive Technologies: How they Change our Hobby; Rob Sherwood, NC0B * Glossary; Pat Barkey, N9RV 2017 Contest University Textbooks have over 370 pages; most of which are talking-point presentation slides, with two slides per page. Order your copy today and begin a journey that will help you to become a more successful Amateur Radio contest operator.
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