Availability
Ladder Line
Feed your multi-band dipole antenna with super-strong ladder line from DX Engineering. Ideal for high-frequency operation, our DX Engineering 300-ohm and 450-ohm ladder...
Feed your multi-band dipole antenna with super-strong ladder line from DX Engineering. Ideal for high-frequency operation, our DX Engineering 300-ohm and 450-ohm ladder line offers great performance even when SWR is horrendous! Choose from 16 and 18 AWG line in a variety of lengths to meet your needs. Thanks to its sturdy, copper-clad steel wire conductors, our ladder line is strong for long horizontal runs between supports. Shop now!
Feed your multi-band dipole antenna with super-strong ladder line from DX Engineering. Ideal for high-frequency operation, our DX Engineering 300-ohm and 450-ohm ladder line offers great performance even when SWR is horrendous! Choose from 16 and 18 AWG line in a variety of lengths to meet your needs. Thanks to its sturdy, copper-clad steel wire conductors, our ladder line is strong for long horizontal runs between supports. Shop now!
DX Engineering 450 Ohm Ladder Line
DX Engineering 450 Ohm Ladder Line is a transmitting grade low-loss parallel-wire RF feedline featuring a strong, waterproof, UV black polyethylene insulation. To maintain the wire spacing between the conductors while reducing losses, the integral flat plastic material alternates with rectangular openings, which explains the "Window Line" nickname. Capable of handling over 3 kW of RF power, DXE-LL450 is a very low-loss transmission line across HF. It is ideal for exceptionally long feedline runs and for low band wire antennas operated on multiple bands on which the feedpoint impedance can vary significantly, causing mismatch and elevated SWR. Unlike coaxial cables, DX Engineering DXE-LL450 Ladder Line maintains low RF losses at frequencies where antenna feedpoint impedance mismatches cause high SWR. It can provide significantly higher efficiency than coaxial cable when feeding non-resonant antenna systems that are matched with a wide impedance range antenna tuner. DXE-LL450 450 Ohm Ladder Line is a high-quality flat RF feedline, about 0.938 in. wide (15/16") with two 16-gauge copper-clad steel wire conductors (29 AWG x 19 strands) that provide the strength to hold up for long spans between supports without twisting. It exhibits a nominal impedance of around 400 Ohms and a nominal Velocity Factor of 91 percent. For proper performance, LL450 Ladder Line must be installed suspended through the air supported by insulators every 25 ft. or less, kept at right angles and several inches away from other wires, and at least one foot away when run parallel to the earth or large metal surfaces. Installing with an axial twist of one turn per 10 ft. can reduce wind, rain and ice loading, RF coupling and RF noise. DXE-LL450 can be mounted with insulators and suspended on metal or wood posts or run along a wood fence line, only if the fence has no wires or metal mesh that couples RF noise or unbalances the feedline. Often used for non-resonant wire doublet antennas, DXE-LL450 can be more easily terminated outdoors to a DXE-MC20-C4-1 4:1 Balun or a DXE-MC20-1-1T 1:1 Balun. Then, with no inline switches or relays, directly connect the antenna system to a typical indoor wide range antenna tuner using a solid dielectric coax, not foam dielectric, to handle high voltage at high SWR. DXE-213U or DXE-214 Coaxial Cable Assemblies 12 or 18 ft. with PL-259s are perfect for this method, which eliminates the need for a special balanced tuner, and avoids the losses and detuning effects caused by unbalancing when ladder line is routed indoors near wires and ducts. DXE-LL450 is sold by the foot, previously sold as DXE-LL450-CTL, this is the same ladder line with a new part number. It is also available in spools of 500 ft. DXE-LL450-5C and 1,000 ft. DXE-LL450-1K, which are specified for DX Engineering Reversible Beverage System Antennas. NOTE: This type of feedline is intended for MF and HF use and is not suitable for use above 54 MHz. Also consider DX Engineering 300 Ohm Ladder Line, DXE-LL300, an excellent alternative low-loss HF feed line that reduces impedance extremes on non-resonant HF multiband antenna systems.
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$1.18
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$792.99
DX Engineering 300 Ohm Ladder Line
DX Engineering 300 Ohm Ladder Line is a transmitting grade low-loss parallel-wire RF feedline featuring a strong, waterproof, UV black polyethylene insulation. To maintain the wire spacing between the conductors while reducing losses, the integral flat plastic material alternates with rectangular openings, which explains the "Window Line" nickname. Capable of handling over 2.5 kW of RF power, DXE-LL300 is a very low-loss transmission line across HF that is ideal for long feedline runs. It is an excellent feedline choice for a low band non-resonant wire antenna operated on multiple bands on which the impedance varies significantly, causing mismatches and elevated SWR. Unlike coaxial cables, DX Engineering DXE-LL300 Ladder Line maintains low RF losses at frequencies where impedance mismatches cause high SWR. The lower impedance of DX Engineering 300 Ohm Ladder Line is actually better suited than 450 ohm ladder line for limiting the impedance extremes of non-resonant multiband antennas. It can provide significantly higher efficiency than coaxial cable for feeding non-resonant antenna systems that are matched with a wide impedance range antenna tuner. DXE-LL300 Ladder Line is a flat, high-quality RF feedline, about 0.438 in. wide with two 18-gauge copper-clad steel wire conductors that provide the strength to hold up for long spans between supports without twisting. It exhibits a nominal impedance of 275 Ohms and a nominal Velocity Factor of 88 percent. For proper performance, LL300 Ladder Line must be installed suspended through the air supported by insulators every 25 ft. or less, kept at right angles and several inches away from other wires, and at least one foot away when run parallel to the earth or large metal surfaces. Installing with an axial twist of one turn per 10 ft. can reduce wind, rain and ice loading, RF coupling and RF noise. DXE-LL300 can be mounted with insulators and suspended on metal or wood posts or run along a wood fence line, only if the fence has no wires or metal mesh that couples RF noise or unbalances the feedline. Most often used for non-resonant wire doublet antennas, dipoles, and inverted-vees, DXE-LL300 can be more easily terminated outdoors to a DXE-MC20-1-1T 1:1 Balun. Then, with no inline switches or relays, directly connect the antenna system to a typical indoor wide range antenna tuner using a solid dielectric coax instead of foam dielectric, to handle high voltage at high SWR. DXE-213U or DXE-214 Coaxial Cable Assemblies 12 or 18 ft. with PL-259s are perfect for this method, which eliminates the need for a special balanced tuner, and avoids the losses and detuning effects caused by unbalancing when ladder line is routed indoors near wires and ducts. DXE-LL300 is sold by the foot, previously sold as DXE-LL300-CTL, this is the same ladder line with a new part number. It is also available in spools of 500 ft. DXE-LL300-5C and 1,000 ft. DXE-LL300-1K. NOTE: This type of feedline is intended for MF and HF use and is not suitable for use above 30 MHz.
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$0.77
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$496.99
Bushcomm OFO Wire Feeder Option and NVIS Kits
Want to enhance the lower-frequency operation on your antenna? Have a look at Bushcomm's open feeder kits. Bushcomm OFO Wire Feeder Option and NVIS Kits are open feeder options for most BBA Series Bushcomm HF antennas. Designed to complement their BBA (multi-wire) models and similar antennas, the OFO NVIS kits are easily constructed and attached to your existing Bushcomm multi-wire antennas. Lightweight and with low visual impact, OFO kits, when assembled, measure just over 10 meters in length. Bushcomm OFO kits are constructed with extremely durable composite-material spacers utilizing snap-lock wire holders, as well as quality stainless steel wire and fittings. OFO Kits are complete kits of most things necessary to install them yourself. Special OFO features: * Improved Performance on Lower Frequencies * Short Path NVIS improvement * Stainless Steel wire Installation kit contents: * 2 x stainless steel nuts * 2 x 10-meter lengths of stainless steel wire (with loops fitted) * 2 x stainless steel bolts * 2 x stainless steel washers * 6m cord (2 x 3m) * 10 x special Wire Snap-Lock Spacers * Instructions * Extra ferrules (in case of length adjustment) Mechanical details: Shipping Weight: 800 grams, 1.76 lbs. Length: 10 meters; 33 ft. Important Note: Works with BBA-100 series antennas when used in a horizontal configuration only (Not Inverted "V"). Not compatible with BBA-600 or BBA-1Kxx series antennas. Bushcomm offers many specialized wire antennas and wire antenna products. To enhance the lower frequency and NVIS performance of your BBA series antennas, order Bushcomm OFO Wire Feeder Option and NVIS Kits from DX Engineering.
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$207.99