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10 Results Found For "in-line"
SOTAbeams Open Wire Line Spacers
SOTAbeams Open Wire Line Spacers are light and strong, heavy duty insulators made with modern materials that make it easy to build your own very low-loss ladder line! Features of these Open Wire Spacers: • Made from a specially selected mix of ABS and PVC to give great strength coupled with good UV resistance and tolerance to a wide temperature range, -58 to +194 degrees F (-50C to +90C) • Unlike heavy ceramic insulators which tend to slip with time on vertical ladder lines, these spacers are lightweight, just 0.2 oz. (5.5g) • Wire clips in easily and spacers stay in place • Suitable for insulated or uninsulated wire 12 to 18 AWG (2.5mm-1.0mm diameter) • Line spacing 4.4 in. (110mm) Spacer length 4.6 in. (120mm) • Spaced to create a feedline with a nominal impedance of 600 ohms • Recommended distance between spreaders is 27 in. (70 cm) • Hole in the center for attachment to wall stand-off or building cage dipoles • Spacers can be used to build special folded dipoles Sold in packs of five (5), it is easy to order SOTAbeams Open Wire Line Spacers in North America from DX Engineering.
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$10.99
Mastrant Antenna Support and Guy Line Ropes
Mastrant Antenna Support and Guy Line Ropes are available in several sizes and strength ratings, perfect for support of wire antennas, vertical antennas and antenna masts, as well as support of Yagi booms and elements. Mastrant ropes are of the highest quality for strength and are UV-protected for extended longevity. MASTRANT-O is a highly reflective rope (bright orange plus braided reflective tape) based on long-term proven Polyester (Dacron) product line. It is designed for maximum visibility in public places such as Field Day and POTA activities. Like all Mastrant ropes, it is UV stable and resistant to all weather conditions. It has low weight, great abrasion resistance, great durability and is nonconductive (no effect whatsoever on your antenna). Moreover, in contrast to ropes made from aramid fibers (Kevlar, Vectran, Technora, Twaron), it has knot strength about 60 %. Mastrant-P and Mastrant-R Ropes are stronger than other synthetic ropes of the same size, made from proven modern polyester. Mastrant-Q is a new rope made from a blend of polyester and polypropylene, designed specifically for guying applications. It offers an excellent performance-to-price ratio and has a knot strength of approximately 60%. It replaces Mastrant-P in diameters of 6 mm (1/4 in.) and larger. Mastrant-S is a similar polyester/polypropylene rope, distinguished by its highly reflective strands for increased visibility. Mastrant-M is their highest strength rope with the Dyneema® DM20 core, a superior synthetic rope offering high performance at an affordable price. Very high strength, negligible elongation, very low weight, and great abrasion resistance are all attributes that make Mastrant-M the best rope for guying. Larger, stronger sizes of Mastrant-M are used in Europe and other parts of the world for tower guying. 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 more. These non-conductive synthetic fibers have all the necessary qualities: high strength, negligible stretch but good flexibility, long life, low moisture collection, fast drying, a minimum bending radius adding the ability to tie knots, good UV radiation resistance, weather durability and resistance to acids and alkali. Conversely, steel guying wires are heavy, difficult to work with, and their strength deteriorates with time due to corrosion and general aging. Electrical conductivity of steel guys is an undesirable feature, as they interact with the antennas and adversely modify radiation patterns. Thanks to recent developments in synthetic materials, both amateur and professional users are changing over to non-conductive guys and ropes. Mastrant offers these products for a variety of applications, from thin support lines used for wire antennas and beams, to rope guys for supporting small and portable masts and vertical antennas. When you need quality rope to install, replace, or modify your antenna systems, consider Mastrant Antenna Support and Guy Line Ropes, now available from DX Engineering.
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$13.99
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$18.99
Synthetic Textile Industries Antenna Support Rope
Synthetic Textile Industries Antenna Support Rope is the premium double-braided Dacron/polyester rope that Amateurs and SWLs have been using for years! Available in several sizes and spool lengths, these superior antenna support 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. Order some Antenna Support Rope today, so you will have it on hand for your next antenna project! This rope is perfect for supporting your wire and vertical antennas, but support rope should NOT be used for tower guying. For your tower guying needs, check out our Tower Guy Lines in the Tower Department here at www.DXEngineering.com
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$13.59
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$18.49
Mastrant MA2 Universal Mast Guying Clamps
Mastrant MA2 Universal Mast Guying Clamps accommodate a wide range of mast diameters and support both 3 and 4-directional guying configurations. A 4-direction kit can also be used for 3-direction configuration, providing maximum flexibility for installation. MA2 brackets are made from 3/32-inch thick 304 stainless steel and feature a drilled hole to insert a screw for securing the guying clamp to the mast. Another option is to utilize a rubber pad between the clamp and the mast made from weather and UV stabilized EPDM. It spreads the pressure on the larger surface of the mast, reducing slippage and moreover isolating the clamp from the mast. The guy line holes measure 1/8-inch diameter and are compatible with shackles, chain couplers, and carabiners sized from 5/32-inch (4mm). They also accommodate thimbles from 1/16-inch (2mm) up to 5/16-inch (8mm).
Not Yet Reviewed
$18.00
Alpha Delta Coaxial Switch Replacement Arc-Plugs®
Alpha Delta Coaxial Switch Replacement Arc-Plugs® are designed to reduce the hazards of lightning-induced or other high-voltage induced surges. When hit with a surge, they will short to ground, protecting your equipment, and will remain shorted and must be removed or replaced in order to continue operation. As with all lightning protection; these surge plugs will not prevent fire or damage caused by a direct lightning strike to an antenna, power lines, or other structure. Alpha Delta D4 Coaxial Switch Replacement Arc-Plugs® are direct replacements for Alpha Delta Coaxial Switch model Delta-2 and Delta-4 series switches. As when used in Alpha Delta Coaxial Switches, D4 Replacement Arc-Plugs® are rated at 1,500 watts CW and SSB PEP, ICAS, at an SWR under 2:1. Lightning surges do lots of damage annually. Don't let your sensitive Amateur Radio gear go unprotected. Order Alpha Delta Coaxial Switch Replacement Arc-Plugs® from DX Engineering!
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$14.00
SOTAbeams USB Battery Pack Keep-Alive Load Kits
SOTAbeams USB Battery Pack Keep-Alive Load Kits are easily assembled PC Board kits that provide an adjustable USB DC load. Some power banks and many USB battery packs switch off (go into a sleep mode) if the current being drawn is too low. This means that your device works for a few minutes and then stops. Often just a few extra milliamps current draw will keep the battery pack alive. There are various circuits on the web that give a pulsed load which works with some battery packs - but unfortunately SOTAbeams' tests have shown that such circuits don't work reliably with all battery packs. Just plug one of these Keep-Alive Load Kits into your battery pack and increase the current until battery pack stays on reliably (usually between 6 - 150 mA). Depending on the current that your powered device takes it may be a little as a few milliamps. An on-board LED indicates if the battery pack is live. The load supports a standard USB data connection. USB plug and socket for easy in-line connection. A heat-shrink sleeve is provided to protect the unit in the field. Don't have your WSPRlite lose its power source! Keep it powered up with SOTAbeams USB Battery Pack Keep-Alive Load Kits from DX Engineering.
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$15.99
DX Engineering RF PRO Loop Replacement Components
Since DX Engineering manufactures the RF-PRO-1B® Active Magnetic Loop Receive Antenna, we can offer these RF PRO Loop Replacement Components. Available for refurbishing Pixel, InLogis or DX Engineering Active Magnetic Loops, choose one or more of these individual "Original Equipment" components, component set or handy accessory pack that fills your needs. 1. DXE-RFPRO1B-PA Receive Preamplifier has this new part number for the preamp unit only. This is the weatherproof, metal-encased replacement RF PRO 1B Receive Preamplifier that mounts directly onto the loop bracket. Mounting hardware is not included with this replacement low-noise preamp, but it is available in the… 2. DXE-RFPRO1B-OAP Outdoor Accessory Pack. This package contains the insulated shoulder washers, flat washers and nuts to properly mount the preamp. Also included in this outdoor package for the loop installation are the mast mounting V-Bolts and Saddles and the short RG-6 F connector jumper to connect the loop to the preamp, and weather sealer. User supplied RG-6 coaxial cable is used for the long feedline that is run inside to the… 3. DXE-RFPRO1B-PI Power Inserter. This is the indoor unit that puts a well filtered and regulated 20 Vdc power onto the feedline for the preamp. It carries the loop RF to the receiver via the F connector. This unit also disables the power to the preamp when it is keyed by the transceiver amplifier keying line. The Power Inserter is run on 24 Vac from the… 4. DXE-PSW-24A-6AU AC Adapter. This clean power supply is a linear transformer that converts 120 Vac to the 24 Vac at 600 mA required by the Power Inserter. It is has the attached 2.1mm power connector. 5. DXE-RFPRO1B-IAP Indoor Accessory Pack contains the cables and adapter to connect the transceiver RF and keying lines to the Power Inserter. The F connector coaxial cable connects RF from the Inserter to the radio. A supplied F female to PL-259 adapter facilitates that connection, should you radio need it. An RCA phono patch cable is supplied for keying the Power Inserter and a RCA phono y-adapter provides the additional keying line connection for a power amplifier. 6. DXE-RF-30B Complete Component Package is for a system replacement where only an existing RF PRO 1B Loop is available. All of the above individual components, cables and hardware items listed above, items 1 through 5, but not the loop, are included in this DXE-RF-30B package. 7. DXE-PRO-LOOP is the Replacement RF PRO 1B Loop that is ordered by customers who have all other components of their system working. When your damaged or defective loop needs to be replaced, this is the loop only part to order. RF-PRO-1B® Loops may occasionally need a replacement component or hardware package. DX Engineering RF PRO Loop Replacement Components are available right here, at DX Engineering!
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$17.49
DX Engineering Wire Antenna End Insulators
DX Engineering Wire Antenna End Insulators are so unique that they are patented. They feature a unique serpentine wire grip for DX Engineering's insulated antenna wires and for our high-strength, high-power 300 ohm ladder line when used as a folded dipole. The serpentine wire grip and loop method is strong enough to support the antenna wires with no soldering of the wire required. This allows for fast and easy field adjustments of antenna length! The DXE-UWA-END-KIT includes eight of these unique insulators, which make them ideal add-on package to create multiple wire fan dipoles from a single UWA-KIT. Note: Whenever the DX Engineering "Documentation" tab is available, please look at the associated files for additional product information. Many hams enjoy building, testing and experimenting with wire antennas. Make your own experimentation easier with DX Engineering Wire Antenna End Insulators!
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$13.99
DX Engineering Glass Antenna Insulators
Sometimes the oldest stuff turns out to be the best. Our exclusive DX Engineering Glass Antenna Insulators hearken back to the earliest years of "wireless" transmissions. Because Irish ship builders of the day pronounced "double" as "dooble," these insulators were once known as "glass doobies" due to their tempered-glass material and double-ended form. Glass insulators offer the highest of electrical insulation properties, strength and resilience available in any insulator of its size. There will be no signal bleed off with these little glass wonders! DX Engineering's DXE-TGI-2 end insulators are 3.69 in. long with 1.125 in. diameter double ends. Each smoothed and rounded end has a 5/16 in. (0.3125 in.) hole that will accommodate many wire and rope sizes without chafing. Their tensile strength and resistance to arcing will withstand almost any wire-antenna use within the Amateur Radio service, domestic or abroad. Since these are end insulators, they are sold as a pair. These are not toy-like models or replica insulators; these are fully functional, high strength glass insulators with excellent RF properties! But, that is not to say that they aren't gorgeous and worthy of showing off! They certainly are perfect for display as a radio room decoration or as a living area conversation piece. Very smooth and pleasing to the touch, these are attractive glass insulators that make a fantastic gift for the ham who thought he had everything! Note: Whenever the DX Engineering "Documentation" tab is available, please look at the associated files for additional product information. In this instance, some interesting information on "Glass Doobies." Bring back a bit of the essence of the Amateur Radio of yesteryear in your wire antenna construction. These glass insulators are actually quite striking in their appearance. Order DX Engineering Glass Antenna Insulators and gain the benefits of using a material that has provided the best wire-antenna insulation for more than a century!
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$15.99
DX Engineering HF Vertical Antenna Replacement Parts
DX Engineering's line of HF Vertical Antenna Replacement Parts are offered for you to perform antenna maintenance or repair. DX Engineering has the antenna parts that you need!
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$17.49