Availability
Baluns, Ununs and RF Chokes
LDG Electronics RU-9:1 Unun
LDG Electronics RU-9:1 Unun was designed to allow easy interface of random length vertical and end fed antennas to the LDG line of Automatic Antenna Tuners. This 200 watt Unun also operates as a standalone, meaning that it does not necessarily require a tuner for use on a certain antenna. It may be used with many of your antenna projects where a 4:1 Unun is typically recommended. This model is small and easy to weatherproof for use in the elements. LDG RU-9:1 Unun specs: * Ratio: 9:1 * Frequency coverage: 1.8 to 30 MHz. * Power range: Up to 200 watts PEP * Enclosure dimensions (WHD): 2.5 x 5 x 1.25 in. * Weight: 6 oz.
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$39.99
LDG Electronics RU-1:1 Unun
LDG Electronics RU-1:1 Unun is intended to help remove unwanted RF from the coax cable shield. It is normally used as a common-mode RF choke for short coax cable runs or non-resonant antennas. The RU-1:1 features SO-239s for input and output. RU-1:1 Unun Specs: * Ratio: 1:1 * Frequency coverage: 1.8 to 30 MHz. * Power range: Up to 200 watts PEP * Enclosure dimensions (WHD): 2.5 x 5 x 1.25 in. * Weight: 6 oz.
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$39.99
LDG Electronics RU-4:1 200 Watt UNUNs
These LDG RU-4:1 200 Watt UNUNs were designed to allow for an easy interface of 43 ft., non-resonant vertical antennas to antenna tuners via 50-ohm coaxial cable. These 200 watt peak-power UNUNs also allow for the easy matching of resonant verticals--in many cases, without the use of an antenna tuner! They may also be used with many of your antenna projects where a 4:1 match is needed. When you are looking for an inexpensive solution to your antenna matching needs, these LDG RU-4:1 200 Watt UNUNs from DX Engineering are real matchmakers!
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$39.99
LDG Electronics 1:1 Current Baluns
LDG Electronics 1:1 Current Baluns were designed to allow for the easy interface of ladder line antennas and long wires with the LDG line of automatic antenna tuners. * Configuration: 1:1 Current Balun * Frequency Coverage: 1.8 to 30 MHz. * Power Range: 100W continuous or 200 watts PEP * Easy to weatherproof * Enclosure size: 5 x 2.5 x 1.25 in. * Weight: 6 oz. (including enclosure) These baluns operate "stand alone"; thus, they do not require an LDG tuner. They may be used with any of your longwire, random wire, or ladder line antenna projects. For low power operation it's hard to beat the value in LDG Electronics 1:1 Current Baluns from DX Engineering!
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$39.99
LDG Electronics 4:1 Voltage Baluns
LDG Electronics 4:1 voltage baluns were designed to allow for the easy interface of ladder line antennas and long wires with the LDG line of automatic antenna tuners. * Configuration: 4:1 Voltage Balun * Frequency Coverage: 1.8 to 30 MHz * Power Range: 100 W continuous or 200 watts PEP * Easy to weatherproof * Enclosure size: 5 x 2.5 x 1.25 in. * Weight: 6 oz. (enclosure weight included) These baluns operate "stand alone"; thus, they do not require an LDG tuner. They may be used with any of your long, random, or ladder line or other antenna projects.
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$39.99
DX Engineering Wire Antenna Balun Mounting Brackets
DX Engineering Wire Antenna Balun Mounting Bracket Kits are custom designed specifically for mounting high-performance Maxi-Core® 20 Baluns or legacy Comtek baluns. These kits include the virtually unbreakable combination balun mounting frame and wire antenna center insulator bracket, two DX Engineering End Insulators plus all stainless steel hardware. This unique design provides minimum capacitive coupling between the antenna wire and the field surrounding the balun core. Wire Antenna Balun Mounting Bracket Kits are the ideal starting point for building a top-performing and long-lasting coaxial cable fed single-band or multi-band wire antennas. Use a DX Engineering Maxi-Core® 20 Balun or Comtek balun, or other manufacturer's similar NEMA box balun, for a resonant or off-center fed dipole, inverted-V or loop. Use the optional coaxial cable strain relief (DXE-CSR213-1 for RG-213 or RG-8U sized coax or the DXE-CSR8X-1 for RG-8X sized coax) with your optional dipole wire (DXE-ANTW Antenna Wire) and antenna rope, all from DX Engineering. These patented** balun wire antenna insulator brackets and end insulators are made from a super high-strength UV resistant black poly-resin compound. They provide an exclusive serpentine wire-weave grip for insulated antenna wire. This method of threading the wire provides a grip strong enough to permanently support the antenna wires without the need for soldered wrapped wire ends onto the antenna wires. This allows fast and easy field adjustments of antenna length for tuning without soldering. Get everything you need to build the best performing, longest lasting wire antenna possible, all from DX Engineering! DX Engineering Wire Antenna Balun Mounting Bracket Kits DXE-WA-BMB: 1 ea. Balun & Wire Antenna bracket High-strength UV black poly-resin (** US Patent # D744,459) 2 ea. DX Engineering End Insulators High-strength, UV poly-resin (**US Patent # D534,905) 4 ea. 6-32 x 3/4" long Stainless Steel Hex Head Bolts 8 ea. #6 Stainless Steel Flat Washers 4 ea. 6-32 Nyloc Hex Nuts Click "More Detail" to see the "Documentation" tab for additional product information and the "Suggested Parts" tab for the additional items (not supplied) for your resonant wire antenna project with the DX Engineering Wire Antenna Balun Mounting Bracket Kit.
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$29.99
Comet Antennas HF/6M RFI Chokes
Comet Antennas HF/6M RFI Chokes are designed to be easy to install and will help prevent or reduce RFI carried into the shack by the coax. The TRF-Mini features a PL-259 connector on one end and an SO-239 on the other, this cable assembly includes a ferrite core at the center. At just 7 inches long, there is sure to be room behind your radio for this choke that can handle up to 350 watts and covers from 1.8-54 MHz.
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$29.95
DX Engineering Balun or Choke Mounting Plate and Bracket Kits
DX Engineering Balun or Feedline Choke Mounting Plate and Bracket Kits provide a variety of mounting solutions for DX Engineering Maxi-Core® 20, Comtek and other brands that use 4 x 4 x 2 in. plastic NEMA boxes. This rugged polymer plastic plate and stainless steel bracket kit may be used at the base of any vertical, on the boom of a Yagi or beam antenna, or even on a mast or post. This unique perpendicular mount provides a beneficial separation between the ferrite of the balun or choke and the metal tubing of the antenna or mount, resulting in improved choking performance. This UV black high-strength polymer mounting plate provides additional isolation between the feedline and the antenna system for optimal performance and decoupling. The stainless steel mounting bracket has holes laser cut for any one of these optional heavy-duty DX Engineering V-Saddle Clamps. Choose based on the outside diameter (OD) of your antenna mounting pipe or boom tubing: -DXE-CAVS-11P for 1/2 to 1-3/4 in. aluminum tubing -DXE-CAVS-2P for 1 to 2 in. aluminum tubing -DXE-CAVS-3P for 2 to 3 in aluminum tubing -DXE-SSVC-2P for 1 to 2 in. for steel pipe -DXE-SSVC-3P for 2.375 to 3 in. steel pipe No optional clamps are necessary when attaching this Mounting Plate and Bracket Kit to a 4x4 or 6x6 wooden post for vertical. Use two suitable wood lag bolts or carriage bolts from a local hardware. DX Engineering Balun or Feedline Choke Mounting Plate and Bracket Kits are the right choice to mount a DX Engineering Maxi-Core® 20 Balun or Feedline Choke onto a vertical or beam antenna.
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$37.99
DX Engineering TWIG QRP 9:1 UNUNs
The DXE-TWIG-9-1 QRP UNUN (Unbalanced-to-Unbalanced transformer) matches a high-impedance, non-resonant end-fed/random wire antenna (33 to 84 feet long) to the 50-ohm unbalanced load required by amateur radio transceivers. The DXE TWIG-9-1 covers 1.8–30 MHz and is ideal for portable (QRP) or HOA-restricted antennas. The connector on the DXE-TWIG-9-1 is a BNC female to mate with the recommended 35 to 50 feet of coax cable, which is used as the counterpoise. In some cases, an external wide range tuner may be needed. This UNUN may not provide a perfect 1:1 SWR on all bands without an additional tuner and may experience heating at higher power due to impedance mismatches. Typically, 9:1 UNUNs are used for: • Random Wire Antenna: Long wires of specific non-resonant lengths (e.g., 29, 35.5, 41, or 71 feet) designed to avoid an electrical half-wave, or multiple of a half-wave, on any amateur band. • End-Fed Long Wire: General-purpose long wire used for wideband receiving or multiband transmitting where an antenna tuner is available. • Inverted "L" or Sloper Configuration: When these are fed as non-resonant wires rather than resonant half-wave radiators. Tips on How to Use the 9:1 QRP UNUN as a Random Wire Antenna 1. Select a "Random" Length: Do not use resonant half-wave lengths. Popular lengths that avoid resonance on amateur bands include e.g., 29, 35.5, 41, or 71 feet. 2. Connect the Antenna Wire: Attach your long wire to the element wire terminal of the UNUN. 3. Use an Antenna Tuner: Because a random wire is never perfectly resonant, you may have to use an internal or external antenna tuner to achieve a low SWR for your transceiver. 4. Placement: Mount the UNUN near the ground or on a short support and run the element wire as high and clear of obstacles as possible. The antenna shown in this manual was tested using the optional 24 or 26 AWG wire such as CEW-VIZ24-YEL100 stranded copper, PVC insulated, high visibility yellow antenna wire. The coax cable (with BNC connectors) is recommended to be 35 to 50 feet in length since the coaxial cable shield is used as the counterpoise. The antenna can be installed in different configurations. Wire lengths will vary depending on the installation and antenna design chosen. This is a low power (QRP) antenna system impedance matching UNUN which handles 25 Watts on SSB, 10 Watts on CW and 5 Watts on digital mode when the antenna SWR is less than 2:1 without the use of an antenna tuner.
Not Yet Reviewed
$49.99
DX Engineering Low Power Balun Center Insulators
DX Engineering LPB-B Low Power Balun Center Insulators feature an amazing Hi-CMI 50-ohm 1:1 Balun built onto a Center Insulator board, and a BNC female right-angle connector pre-installed. Designed for portable operations on HF bands, these baluns let you join the fun of making a high-performance Single Band or Multi-Band Linked Dipole! This coax wound toroid achieves an amazing common mode impedance (CMI) curve, with an RF choking capability that far exceeds 'a-few-beads-on-coax' products that are offered by other suppliers, and they can handle up to 250 watts on SSB voice, or 100 watts or less on CW or Digital modes on frequencies below a 2:1 SWR. They are designed for building a center supported Inverted Vee Dipole (not end supported) and are great for use with DX Engineering Nomad Portable Telescopic Masts (sold separately). Great for POTA, SOTA and JOTA, low-cost DIY Low Power Balun Center Insulators are ready for use on a monoband resonant or link-clip multi-band resonant wire antenna for portable or long-term temporary operations. These Low Power Balun Center Insulators are the heart of the DX Engineering Low Power Portable Dipole and Winder Kits.
Not Yet Reviewed
$49.99
DX Engineering TWIG QRP 1:1 Choke Baluns
DX Engineering TWIG QRP 1:1 Choke Baluns were engineered as the key component for building a low power (QRP) dipole antenna. Ideal for use during outdoor adventures such as POTA® or SOTA, or any portable operation. The TWIG incorporates a 1:1 transformer to keep the feedline impedance of the half-wave element wire down to 50-ohms. The connector is a BNC female and matches up with the recommended coax and most low power (QRP) transceivers. When properly installed and the element wire is accurately tuned, the system can achieve an SWR below 2:1 without the need for an external antenna tuner, reducing the amount of extra equipment required. The TWIG 1:1 is rated for 25W SSB, 10W CW, and 5W digital.
Not Yet Reviewed
$49.99
DX Engineering Mounting Brackets for Baluns
DX Engineering Mounting Brackets for Baluns are custom-made, patented* adapter plates. They accommodate your DX Engineering Maxi-Core® 20 Baluns and Chokes, for mounting on a boom or mast of an antenna. These UV resistant poly-resin balun mounting brackets also fit legacy Comtek Baluns and other manufacturers' similarly packaged, NEMA box baluns. These kits include stainless steel mounting hardware for only the balun. Choose a pair of specific optional ECLS series band clamps with studs, sold in pairs, required to mount these Mounting Brackets onto a boom, a mast or pipe, in sizes ranging from 1/2 in. through 3-1/4 in. Note: Whenever the DX Engineering "Documentation" tab is available, please look at the associated files for additional product information. *U.S. Patent Number D597086
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$20.99
LDG Electronics QRP Pixie Balun Set
The LDG Electronics QRP Pixie Balun Set was developed for QRP Enthusiasts and is a compact solution for matching and experimenting with a variety of antenna systems. Designed for up to 10 watts, this set includes two professionally built transformers: • Transformer 1: Balanced/Unbalanced, Converts from BNC to parallel wire (~500 Ohms) • Transformer 2: Balanced/Balanced, Converts from 500-Ohm parallel to 5000-Ohm parallel Made from thick, high-quality materials, both boards are ideal for portable use and field experimentation. Whether you're setting up a dipole antenna directly behind the first 10:1 balun or feeding a more distant antenna via twin-lead and the second 10:1 Bal/Bal transformer, this kit offers flexibility. Helpful construction tips and suggested wire lengths are printed on the back of each board—making them a perfect companion for weekend projects or lightweight SOTA/POTA operations.
Not Yet Reviewed
$24.99
DX Engineering Replacement Ceramic Insulators
DX Engineering replacement ceramic insulators are designed for use with DX Engineering baluns. They are manufactured from quality materials and include one gasket for installation. These through-panel ceramic replacement insulators have a diameter of 1.250 in. and are 0.813 in. tall without the metal hardware (not included). They are also very suitable for homebrew projects and as replacements in special applications such as vintage transmitters or trans-matches. For the best in porcelain insulators, DX Engineering Replacement Ceramic Insulators are the ones to use!
Not Yet Reviewed
$23.99
Momobeam Choke/Balun Mounting Brackets
Momobeam Choke/Balun Mounting Brackets enable the installation of Momobeam RF chokes on all compatible square and round Momobeam antenna booms. Constructed from durable, UV resistant ASA material, these brackets ensure long term reliability. Each package includes two properly sized plastic cable ties for secure choke attachment.
Not Yet Reviewed
$49.99
DX Engineering Balun and Feedline Current Choke Mounting Kits
DX Engineering Balun and Feedline Current Choke Mounting Kits allow you to mount a legacy "metal case" DX Engineering balun or feedline current choke at the base of any vertical antenna. This original mounting plate is not drilled for the Maxi-Core 20 Baluns and Feedline Chokes released in February 2020. Please see DXE-MC20K-BRKT to mount the plastic NEMA box models. For the older metal case models, this polymer mounting plate is isolated from the rest of the vertical ground system for best performance and decoupling. The mounting brackets were designed to utilize DX Engineering's V-bolt DXE-CAVS-1P saddle clamps, to mount the bracket onto a 1/2 to 1-3/4 in. ground pipe which mounts the balun or choke horizontally. Also available are the heavy duty DXE-CAVS-11P for 1/2 to 1-3/4 in. aluminum pipe and DXE-SSVC-2P for 1 to 2 in. steel pipe. V-bolt saddle clamps are not included and will need to be purchased separately if you choose to mount your bracket to a ground pipe. If you are mounting to a 4x4 or 6x6 wooden post, then no clamps are necessary--simply use 2 suitable wood screws. These kits work with any DX Engineering balun or choke with a formed-aluminum enclosure. Each kit includes a polymer mounting plate, aluminum adapter brackets, and stainless steel mounting hardware. Mounting clamps are sold separately. Note: Whenever the DX Engineering "Documentation" tab is available, please look at the associated files for additional product information. This is the legacy DX Engineering Balun and Feedline Current Choke Mounting Kits for the metal case baluns and feedline current chokes.
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$28.99