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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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$851.99
$681.59
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VE2DX Electronics SO2R 2X6 Remote Antenna Switches
VE2DX Electronics SO2R 2X6 Remote Antenna Switches provide selection of any six antennas for connection to two radios, covering the frequency range of 1.8 to 60 MHz. All control signals are RFI filtered as are all VE2DX Electronics printed circuit boards (PCB) with shielding on both sides. Each SO-239 (UHF female) antenna port features five relays to achieve a design with over 80db port isolation and full legal limit power handling. The simplicity of this 2X6 design allows the use of only 2 coax cables from the station to the tower. Both radio ports have access to any of the unselected 6 antenna ports. The VE2DX Electronics SO2R 2X6 Remote Antenna Switches is available in both 12VDC and 24VDC versions; the 24VDC version is for installation that requires a longer control line to the Remote Antenna Switch . Each provides a terminal for a 12VDC line inside the weatherproof unit for remote accessories. VE2DX Electronics SO2R 2X6 Remote Antenna Switches may be controlled by third party switch consoles, station controllers and computer automation that supports two sets of 1 of 6 selection. A weatherproof chassis protects the electronics; units should be installed outdoors with connectors facing downward.
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$624.99
$531.24
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Scratch & Dent
Ciro Mazzoni Loop Antenna Replacement Parts
Ciro Mazzoni Loop Antenna Replacement Parts are stocked for those who need to update or reinstall their Loop Antenna by I3VHF. Parts are all original; exactly the same supplied with each model, MIDI, BABY and STEALTH models, including Actuator motors and Isolator Arms. The updated, current model ATU 2.0 replacement (MZZ-COM1001) is the same as supplied with all three new antennas. So are the Universal AC Power Supply (MZZ-COM1002) and the USB Keyboard (MZZ-COM1003). The Stainless Steel Mast Clamp and hardware (MZZ-COM1005) fit the MIDI or the BABY Loops. The MZZ-BLA1010 aluminum adapter plate is supplied with BABY Loop Tripods, available here as a replacement. Order Loop Antenna by I3VHF Replacement Parts here at DX Engineering.
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$799.99
$719.99
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Open Box
4O3A 8xAB Antenna Switches
4O3A 8xAB Antenna Switches integrate eight independent A/B switches into a single compact unit, enabling seamless switching between multiple antennas and radios. When paired with two 403A Antenna Genius switches (O3A-40-AG8X2 or O3A-40-AG8X2-N), it forms a powerful 8×4 antenna matrix, allowing up to eight antennas to be routed to four radios with exceptional isolation. Built with the needs of high-power stations in mind, the 8xAB Switch delivers robust performance, intuitive operation, and a clean, maintainable installation. The primary motivation behind the 8xAB switch is the integration of two Antenna Genius smart switches into an 8×4 Super Switch.
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$775.99
$737.19
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Open Box
Yaesu Rotator Units
Yaesu Rotator Units are available as replacements or as stand-alone azimuth positioners for use with a third party controller. They include only the top mast bracket and hardware. Lower mast brackets are sold separately.
( 19 )
$769.99
$692.99
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Scratch & Dent
Green Heron RT-21-CDE Universal Digital Rotor Controllers
Green Heron RT-21-CDE Universal Digital Rotor Controllers are completely new, extremely advanced and adaptable controllers for your directional antenna rotation systems. Offering the ultimate in operational capabilities, Green Heron RT-21-CDE Universal Digital Rotor Controllers are the best controllers available for your new rotor unit or as a replacement in existing systems. You can add these great features to your existing rotator unit, without even climbing the tower! * Pre-programmed for Hy-Gain and CDE rotator systems * High-visibility LCD display with adjustable backlight brightness * Fully versatile controls for point-and-shoot or manual push button operation plus presets * Automated rotator computer control through RS-232 or USB * PWM (pulse width modulated) variable-speed control * Start and stop ramping to reduce tower and antenna stresses * Precision heading accuracy up to 1/10 degree * Fully supports side mounted antennas, soft limits prevent running into tower * Allows over-travel up to 720 degrees total * Offset control allows center of rotation at any heading, allows N & S center on same mast, and compensates for slipped mast * Fully user-programmable, reversal and brake delay, speed minimum and maximum, limits, ramps, and much more * Master/slave for stacked arrays, turn together or separately * Counter-rotation, install rotor above rotating tower * Easy front panel setup and setup utility software Replace your old-fashioned rotator controller with a modern, state-of-the-art digital controller! Green Heron RT-21-CDE Universal Digital Rotor Controllers from DX Engineering are pre-programmed specifically for Hy-Gain/CDE HAM-series and T2X (Tailtwister) rotators. However, they are easy to setup for all other rotator units because they are field programmable with convenient, internal, solderless jumpers. Get yours today!
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$649.00
$506.22