Availability
Clearance
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.
( 186 )
$851.99
$681.59
Clearance
Open Box
Astron Rack Mounted Linear Power Supplies
If you're looking for a heavy-duty, rugged, reliable, high-quality power supply, then look no further. Astron Rack Mounted Linear Power Supplies are made with care and precision. They're available in a wide variety of outputs with or without meters. Key features include: * Heavy-duty transformer * Solid-state electronically regulated * Fold-back current limiting protects power supply from excessive current and continuous shorted output * Crowbar over voltage protection on all models * Maintains regulation and low ripple at low line input voltage * Heavy-duty heat sink * Chassis mount fuse * Three conductor power cord (NEMA 5-15P to IEC 60320 C13) Astron rack mounted power supplies are packed full of performance for your needs. DX Engineering has the model you're looking for. Performance specification: * Input voltage: 105-125 Vac (220-250 Vac on models ending in "220") * RM Series output voltage: 13.8 Vdc +/- 0.05 volts (internally adjustable: 11-16Vdc) * LSRM Series output voltage: 28.0 Vdc +/- 0.05 volts (internally adjustable 22-32 Vdc) * Ripple less than 5mv peak to peak (full load and low line)
( 8 )
$653.95
$555.86
Clearance
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.
Not Yet Reviewed
$624.99
$531.24