Antennas for HAM Radio | DX Engineering

PackTenna Mini In-Line RF Feedline Chokes

PackTenna Mini In-Line RF Feedline Chokes are designed to suppress RF interference caused by common mode current flowing from the antenna feed point back to the radio. This type of current can disrupt radio performance and affect nearby equipment. In-line chokes are recommended for all end-fed antennas when operating above 20 watts. While you may not experience issues immediately, RF interference can occur as you increase power, change bands, adjust coax length, or reposition the antenna.

5.0 out of 5 stars ( 1 )

$75.00

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.

4.94 out of 5 stars ( 186 )

$13.99

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$1,187.99

Chelegance Guy Line Anchors

Chelegance Guy Line Anchor Rods are made from steel with a shaft diameter of 9mm, just under 3/8in. and they are 7.9 inches in length, with a built-in hook that makes tying off your guy ropes a breeze. Sold in packs of 4.

Not Yet Reviewed

$20.99

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.

3.67 out of 5 stars ( 3 )

$10.99

WiMo Phase Lines

WiMo Phase Lines are band-specific phasing cable assemblies, either 2 meter or 70 cm, used on the respective WiMo X-Quad Antennas or other cross-polarized Yagi. They combine the vertical and horizontal elements into either Right-Hand or Left-Hand Circular Polarization, dependent upon beam driven element position. Each cable set comes with two male Type-N connector cables, one for each polarization element, combined into one female Type-N connector for the main 50 ohm coaxial feedline to the station. WiMo Phase Lines are used in non-switchable systems.

4.5 out of 5 stars ( 2 )

$99.99

Chelegance Guy Line Rope

Chelegance Guy Line Rope provides the support necessary to keep your antenna standing tall! These guy line ropes are sold in 328ft. (100m) lengths and they are approximately 1/4 in. (6mm) in diameter. They are made from a polyester material with a breaking strength of 500lbs. (227kg).

Not Yet Reviewed

$39.99

DX Engineering Rotator Control Line Connectors

Available here, individually, are the "remarkable and elegant" 4-pin interlocking weather-sealed rotator control line connectors that have metal bodies to provide RF shielding, as supplied with the DXE-RT4500HD. These DX Engineering Rotator Control Line Connectors are top-of-the-line cable-mount solder connectors that are intended to be used outdoors, for a lifetime of reliable control line termination. Their positive latching, moisture-sealing, quick disconnect features make them ideal to build an extension, pigtail or test cable for your DXE-RT4500HD or controller. They are a perfect match for DX Engineering DXE-CW1812OR Heavy-Duty Spec Rotator Cable, with 5 conductors: 2 x 12 AWG and 2 x 18 AWG plus 1 x 18 AWG shield. Each gender are used to build your own rotator cable assembly extension. Just as with standard power extension cords, use female for the power source end and male for the mating end of the extension, so there is never an exposed pin with voltage present. In this case, use the DXE-LP-20-F female connector on any cable, controller pigtail or the rotator end of an extension that can have a voltage present. Use the DXE-LP-20-M male connector on the controller end of the mating extension cable. DXE-LP-20-F 4-pin female to make a controller pigtail or for the end of a cable assembly that mates with the male rotator pigtail. This connector is supplied with DXE-RT4500HD Heavy Duty Rotators DXE-LP-20-M 4-pin male as supplied on the permanently mounted DXE-RT4500HD Heavy Duty Rotator. Used for the controller end of an extension cable to mate with a controller pigtail. These are the best connectors, to make the best weather-sealed 4-conductor cable assembly, for the best rotator on the market, all from DX Engineering.

Not Yet Reviewed

$20.99

Mastrant Clamcleat® Guy Line Tensioning Reels

Mastrant Clamcleat® Guy Line Tensioning Reels are designed for quick and easy tensioning and releasing of guy lines on portable antennas and masts. These Tensioning Reels, featuring Clamcleat® technology are designed for 1/4 in. (6mm) diameter rope, and ensure your ropes are secure and stored.

Not Yet Reviewed

$29.99

REZ Antenna Systems CM7 Common Mode Feedline Chokes

REZ Antenna Systems CM7 Common Mode Feedline Chokes are inline 1:1 common mode feedline chokes, consisting of seven mix-31 ferrite beads and RG223/U double shield coax. Proudly made in the USA, the compact and streamlined CM7 was designed to solve some of the most common issues that can negatively impact antenna system tuning and performance. For instance, common mode current carried on the outside of a coaxial cable can cause unwanted RF traveling back to your operating position, causing many issues. Another common issue is that the coax will become part of the antenna system and begin radiating RF. In most cases this is undesirable. Simply install the CM7 at the feed point of your antenna and attach your exiting coaxial cable to the opposite end. The CM7 can be used with many popular antenna types, such as EFHW, dipoles, random wires and verticals, to improve tuning consistency and antenna performance. Many antennas require the use of a 1:1 choke to isolate the coaxial cable from the antenna system for proper performance. Why not improve the performance of your antenna system? Order a REZ Antenna Systems CM7 Common Mode Choke from DX Engineering.

4.69 out of 5 stars ( 13 )

$69.99

COMTEK CFC-50X Common Mode Feedline Chokes

COMTEK CFC-50X Common Mode Feedline Chokes are designed to suppress unwanted RF currents on the outside of the shield on coaxial feedlines. These 1:1 inline coaxial feedline chokes are built with fifteen Mix-31 ferrite beads on premium DX Engineering RG-8X coaxial cable, offering improved performance for a wide variety of antenna systems. COM-CFC-50X Key Benefits: • Provides Effective Shield RF Current Suppression from 1.8 to 54 MHz, helping eliminate common mode currents that cause RF feedback and noise inside the feedline. • Consistent and balanced pattern across frequency range: Excellent RF choking isolating the feedpoint prevents current imbalance, which preserves radiation pattern and antenna performance.

5.0 out of 5 stars ( 3 )

$59.99

COMTEK Current Feedline Chokes

The updated COMTEK CFC-50A 50 ohm Feedline Chokes consist of 75 heavy-duty mix-31 RF choke beads on a length of RG400 PTFE coax terminated at both ends with silver-plated PTFE PL-259/UHF male connectors and the correct length of heat-shrink tubing. COMTEK Current Feedline Chokes ensure that stray RF does not flow on the outside shield of your feedlines. They are typically installed at the antenna feedpoint connection. They may also be used where a long run of feedline leaves a remote antenna switch or a tower. They are also very effective at the shack end of a long run of on-the-ground or above-ground coaxial feedline, to block unwanted RF signals and noise picked up on the shield. These chokes provide excellent common mode impedance and handle up to 5 kW from 1.8 to 54 MHz. These chokes are assembled except for the tubing needs to be installed and heat-shrinked after the choke is positioned as it will be installed.

4.64 out of 5 stars ( 14 )

$131.49

REZ Antenna Systems Scout XFORM Antenna Kits

REZ Antenna Systems Scout XFORM Antenna Kits are designed to get you up and running fast. Based on the Scout XF Base, these versatile kits contain the parts you need to set up portable antennas in the field for portable operations. Each kit provides the building blocks to set the XFORM antenna system up in a variety of ways. What type of antenna you can set up with each kit is varied but comes with the parts to set up at least a vertical and a delta loop. The REZ Antenna Systems SXF-41KIT1 includes: the REZ Ranger Pro backpack, the REZ Scout XF mounting base, the XFORM 4:1 UNUN, the REZ Multi Mount, the REZ Ground Spike, the REZ common mode feedline choke, two REZ 17-foot Stainless Steel telescopic whips, and the REZ Delta Loop Antenna Wire kit. The REZ Antenna Systems SXF-41KIT2 includes: The REZ Scout XF mounting base, the XFORM 4:1 UNUN, the REZ Multi Mount, two REZ 17-foot Stainless Steel telescopic whips, and the REZ Delta Loop Antenna Wire kit. The REZ Antenna Systems SXF-41KIT3 includes: the REZ Scout XF mounting base, the XFORM 4:1 UNUN, the REZ Multi Mount, the REZ common mode feedline choke, two REZ 17-foot Stainless Steel telescopic whips, and the REZ Delta Loop Antenna Wire kit The heart of these REZ antenna kits is the Scout XF mounting base, which is designed to connect your coax to the rest of the XFORM system. Featuring a pair of 3/8x24 studs, a ring for hanging the Scout and coupling nuts, this versatile mounting base allows for your antenna to be oriented in multiple ways. Connection points along the base allow for easy attachment of radials. The REZ XFORM 4:1 UNUN mounts to the top of the Scout XF mounting base and adds a 4:1 transformer to the antenna system. This is useful when setting the antenna up as a delta loop or a Rybakov Vertical. Gaskets on the UNUN allow for sealing against inclement weather. The REZ Multi mounts allow for attaching the Scout XF base to the Ground Spike or a tripod. Providing three 3/8x24 threaded holes on the top, one horizontal, and two at 45-degree angles opposite each other as well as a 3/8x16 and a 1/4x20 for mounting on a REZ Ground Spike or the REZ [Z]Pod Tripod. Comes with a 3/8x24 stud for mounting to the Ground Spike or [Z]Pod Tripod. The REZ Delta Loop Antenna Wire Kits are a 25-foot-long wire that is designed to be paired with a pair of 17-foot stainless steel telescopic whips. Copper clips on each end of the [Z]Kore Kevlar antenna wire provide a solid connection to the telescoping whips, and the wire stores on a convenient wire winder to keep the wire neat and for easy deployment and storage. The REZ [Z]-17SS Stainless steel whips are 17-foot-long telescopic whips that collapse down to 24 5/8in. Weighing in at 14.4 oz, with a power rating of 1000W PEP, these 17-foot whips are resonant on 20-6 meters by themselves or up through 40 meters with the addition of an XFORM UNUN. The REZ CM7 Common Mode feedline chokes provide a reduction in common mode current that travels back down your coax and causes issues for radiating your signal. These quality feedline chokes help keep the RF radiating from the antenna where you want it and not the coax. The REZ Ranger Pro Backpacks provide a convenient way to carry your REZ antenna system and ancillary gear into the field. Depending on the size of your radio and battery, you may be able to carry your entire portable setup in this backpack. This quality pack makes it easy for organization of all of your portable gear with multiple pockets and Molle webbing for additional attachment points to hold your gear.

Not Yet Reviewed

$619.94

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$759.94

DX Engineering HF QRP Bandpass Filters

DX Engineering HF QRP Bandpass Filters are designed to tightly confine both transmitted and receive signals to one specific Amateur band, these filters significantly reduce out of band noise, resulting in a noticeably lower noise floor and improved weak signal reception. In multi operator contest or portable operations, they deliver the essential isolation needed to eliminate image and harmonic interference, ensuring clean mono band performance even in close quarters environments. Each filter features a sharp roll off just outside the band edges, providing exceptional rejection of adjacent band signals and maintaining maximum operating efficiency for QRP applications. Offered for the 80, 40, 20, 15, and 10-meter amateur bands, they install easily in line with the coax feedline using the BNC connectors provided on each end. With power ratings of 20 watts SSB and 5 watts digital, they are ideal for QRP enthusiasts participating in multi operator events such as Field Day, POTA, and SOTA.

Not Yet Reviewed

$69.99

I0JXX LNA Receive Preamplifiers

I0JXX LNA Receive Preamplifiers offer high gain amplification with very low internal noise for VHF and UHF amateur band optimized devices used world-wide by experimenters and contest enthusiasts. Excellent receive-only performance at low current is achieved by these compact 12VDC units, available in two connector configurations: SMA female input and output, or Type N male input and female output. LNA (low noise amplifiers) offer preamplification using ultra-low noise components as good or better than most receiver front ends, to preserve the capabilities of a low-noise antenna system. Typically, they do not have relays in the signal path that might introduce noise or loss. These devices can be used directly in most receive applications and may be used to build a sequencer-controlled Receive-Transmit relay system for two-way VHF or UHF communications. I0JXX LNA Receive Preamplifiers are built with high quality components including low-loss FR4 copper clad PCBs and environmentally safe tri-chrome high-conductivity passivated aluminum chassis. View the specific device specifications on each part detail page.

Not Yet Reviewed

$191.99

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$223.99

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.

4.71 out of 5 stars ( 7 )

$105.99

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$122.99

Momobeam RFC-LI 1kW Single Core Line Isolator RF Choke Baluns

Momobeam RFC-LI 1kW Single Core Line Isolator RF Choke Baluns are efficient broadband common mode current chokes designed to ensure proper current balance and clean transitions between balanced resonant antennas—such as dipoles and Yagi antennas—and unbalanced coaxial feed lines. By delivering excellent suppression of unwanted common mode current across a wide frequency range, these RF chokes help maintain optimal antenna performance and protect sensitive station equipment. Common mode currents can cause a variety of station problems, including elevated receiver noise levels, inaccurate SWR measurements, and interference affecting nearby electronic devices or equipment within the shack. The RFC LI effectively prevents these issues by stopping common mode current from traveling on the outside of the coaxial shield, ensuring cleaner transmit and receive performance under all operating conditions.

Not Yet Reviewed

$144.99

Momobeam RFC-LI 2kW Dual Core Line Isolator RF Choke Baluns

Momobeam RFC-LI 2kW Dual Core Line Isolator RF Choke Baluns are efficient broadband common mode current chokes designed to ensure proper current balance and clean transitions between balanced resonant antennas—such as dipoles and Yagi antennas—and unbalanced coaxial feed lines. By delivering excellent suppression of unwanted common mode current across a wide frequency range, these RF chokes help maintain optimal antenna performance and protect sensitive station equipment. Common mode currents can cause a variety of station problems, including elevated receiver noise levels, inaccurate SWR measurements, and interference affecting nearby electronic devices or equipment within the shack. The RFC LI effectively prevents these issues by stopping common mode current from traveling on the outside of the coaxial shield, ensuring cleaner transmit and receive performance under all operating conditions.

Not Yet Reviewed

$180.99

Momobeam RFC-LI 4kW Dual Big Core Line Isolator RF Choke Baluns

Momobeam RFC-LI 2kW Dual Core Line Isolator RF Choke Baluns are efficient broadband common mode current chokes designed to ensure proper current balance and clean transitions between balanced resonant antennas—such as dipoles and Yagi antennas—and unbalanced coaxial feed lines. By delivering excellent suppression of unwanted common mode current across a wide frequency range, these RF chokes help maintain optimal antenna performance and protect sensitive station equipment. Common mode currents can cause a variety of station problems, including elevated receiver noise levels, inaccurate SWR measurements, and interference affecting nearby electronic devices or equipment within the shack. The RFC LI effectively prevents these issues by stopping common mode current from traveling on the outside of the coaxial shield, ensuring cleaner transmit and receive performance under all operating conditions.

Not Yet Reviewed

$229.99

COMPACtenna 2M/440+ Optimized High Performance Dual-Band Ham Radio Antenna

COMPACtenna 2M/440+ provides high performance using a unique Electric-Magnetic Field Diversity design, Patent No. 9,407,001. Superior Omni-directional coverage is achieved far beyond what would be expected for the antenna size. The multi-faceted geometric design of the antenna includes "extended flat monofilar spiral Tesla-like coils" that serve as the LCR matching system, resonating as an integral part of the signal field generation. No external or internal electronic lossy matching components are used. This design establishes diverse electromagnetic fields resulting in signal stability and performance greater than expected in NLOS (Non-Line-Of-Sight) environments, reducing the effects of ionospheric polarization shifts. COMPACtenna 2M/440+ Specifications: * Frequency Coverage: 144-148 MHz, 430-450 MHz * Power Rating: 100 W 2M; 75 W 70cm * Duty Cycle, Max. Power: 1 minute transmit limit in a 2-minute period * Repeater Operation: 30W maximum at the antenna * Maximum Ambient Temperature: 130 degrees F (hotter conditions, sun exposure, limited air flow reduces duty cycle) * Gain: +5 dB-MEG: Due to diverse EM fields of the Magnetic Field Resonator, performance is greater than predicted by singular polarization field-range tests * SWR, nominal: < 2.1:1 144-148 MHz, 430-450 MHz. Best SWR on VHF frequencies when COMPACtenna 2M/440+ antenna is mounted on an upper corner of a vehicle, NOT center mount. Flat style magnetic mounts provide the best SWR results. SWR varies with size and shape of the vehicle.

4.69 out of 5 stars ( 26 )

$199.00

WiMo X-Quad Antennas

WiMo X-Quad Antennas, with separate monoband models for 144-146 MHz or 430-440 MHz, represent a refinement of VHF and UHF cross-polarized Yagis. They are well-known in Europe as "multi-element quads"—an antenna with aluminum elements, not a wire and fiberglass antenna—which offer excellent gain with a relatively short boom length. X-Quads are a great solution due to their short length and lightweight construction, especially for VHF/UHF satellite systems which require rotation in all compass directions and elevations. Two X-Quad Antennas, one for 144-146 MHz and one for 430-440 MHz, may be mounted at opposite ends of an azimuth-elevation rotator cross-boom for high-performance full duplex Satellite operations. For either or both bands, X-Quad Antennas may instead be used in a stationary mount, as pictured, for all-mode terrestrial operations. In either application, multiple X-Quad Antennas may be stacked vertically and horizontally for additional gain and tighter patterns. The WiMo X-Quad special features, developed specifically for Satellite Amateur Radio include: * Switchable Polarization Plane; horizontal/vertical/right hand circular/left hand circular (remote switching requires optional equipment) * High gain compared to other antenna forms due to the "stacking effect" * Short boom length and compact design * Back-end boom or mid-boom centered mounting to the mast is possible The radiator element is a "stacked quad" multi-element beam, for which linear polarization can be compared to a crossed slotted radiator. However, the advantage of the X-Quad is that it can be optimally used for the desired polarization by simply changing the feed. Compared to a typical cross-polarized Yagi, all directors and reflectors are active in the X-Quad, which enables the compact design. As with cross-polarized Yagis, switching is accomplished on the mono-band X-Quad either by a coaxial relay or with a band specific WiMo Remote Polarization Switch (sold separately). If the remote switch is mounted at the antenna, then only one coax cable and a 4-conductor control cable are required, sold separately. If the Switch is used at the station, then two coaxial cables from the antenna to the station are needed. The WiMo X-Quad Antenna can also be permanently set for circular operation by using an optional, band-specific Phase Line. The secondary elements are arranged diagonally in relation to the square-shaped driven element, which corresponds to the voltage distribution on the radiating element, for the most favorable results. In comparison to Yagi antennas, the X-Quad pattern and tuning are affected less by the influence of external fields, making them ideal for installation under a roof, in an attic space. All elements are electrically conductively connected with boom and cable outer sheath, thus eliminating interference from atmospheric noise. Two Type-N female coaxial connectors, one for each polarization, are mounted in a housing that is waterproof. Boom and elements are made of aluminum, all hardware is stainless steel. Construction and design of the antennas are protected by law (DBGM). The antennas are designed for boom-end mounting; however, alternatively the mast clamp can be mounted in the middle of a non-metallic boom. These antennas have a split boom, so their transport length is only 29.53 in. (75cm) for the 2m antenna and 25.59 in. (65cm) for the 70cm X-Quad. For portable operations they can be stowed away comfortably in the trunk of car and their shipping costs are comparatively low.

5.0 out of 5 stars ( 5 )

$349.99

microHAM ARCO Advanced Rotator Controllers

microHAM ARCO Advanced Rotator Controllers were created to replace all other rotator control units. They raise the bar as THE state-of-the-art rotator controllers, designed and built for reliability, to work with virtually any rotator. Completely self-contained, ARCO Rotator Controllers do not require a computer or any external devices for setup or operation and offer a broad selection of interfaces for remote control. microHAM ARCO Rotator Controllers feature a beautifully organized 7-inch touch screen LCD with a colorful Great Circle azimuthal map, digital heading and other rotator control functions that are within easy reach. The user's location is easily entered to be the center of the beam heading map. Control azimuth or elevation heading with the handy "Touch 'n Tune" feature while taking advantage of the four different radius settings, live grey line projection, multiple coloring options and automatic day/night color schemes making the ARCO useful for VHF enthusiasts. All rotator settings, including compensation for power loss in the motor cabling, are menu-driven, without the need to open the cover. Click the link below to read more about the exciting microHAM ARCO Advanced Rotator Controllers.

4.54 out of 5 stars ( 37 )

$1,389.99

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$1,499.99

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

4.85 out of 5 stars ( 95 )

$13.59

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$279.99

DX Engineering RTR-2 Modular Receive-Transmit Interfaces

DX Engineering RTR-2 Modular Receive-Transmit Interfaces provide the easiest and safest method for connecting a dedicated receive antenna to an HF transceiver that does not have a separate receive antenna input. Placed inline with the transceiver's antenna connector, the RTR-2 does the job of a 200 watt T/R relay using the amplifier keying line for failsafe protection, so your transmitted energy cannot go to the receive antenna. Three internal Plug-in Module option slots provide added features and protection: * DXE-RPA-2-PM Receive Preamplifier Plug-in Module * DXE-TRI-PM Transmit Receive Interrupter Plug-In Module * DXE-IT-PM 75 to 50 ohm Impedance Transformer Plug-in Module DX Engineering RTR-2 Modular Receive-Transmit Interfaces allow the standard transceiver owner to enjoy the advantages of separate receive antennas. For the unswitched receive antenna (RX ANT) port on expensive transceivers, the RTR-2 interface also adds inexpensive failsafe protection. The receive antenna line can be opened or grounded with the optional DXE-TRI-PM Interrupter plug-in module. The RTR-2 is a very useful device for many applications, including: * Connection of external receiving antennas to transceivers lacking external antenna ports * T-R antenna switch for older equipment using separate transmitters and receivers * Interfacing antennas to older phasing or noise cancelling systems * Addition of a switchable receive preamplifier to any transceiver or transmitter and receiver combination * Excellent failsafe receiver protection for close-spaced transmit and receive antennas, without performance degradation of diode circuits of other devices. RTR-2 units feature a unique, failsafe connection method that prevents the hot switching and timing errors that are common on other transmit/receive relays. RTR-2 interfaces switch fast enough for partial break-in CW operation. There are many simple applications for the new RTR-2 and now internal modules can add dramatically improved reception of those really weak signals on the crowded HF bands! DX Engineering RTR-2 Modular Receive-Transmit Interfaces enable operators to enjoy improved reception with any low noise receiving antenna system. This shielded enclosure relay system provides a safe method of connecting a receive antenna, such as a Beverage, Active Receive system, or other receiving accessories to your radio. Major features that make the DX Engineering RTR-2 Receive Antenna Interfaces your best choice for a receive T/R system device: * New Status Indicating Color-changing LEDs * Three internal slots for new DX Engineering modules * New Key Line Out connector for Amplifier * New internal jumper for placing DC on the Receive Antenna feedline for Active or Loop receive antennas * Attractive and heavy stainless steel enclosure * 200 watts RF switching capability * Supports CW partial break-in * Main transmit antenna connector is SO-239 (UHF female) * Radio RF connector is SO-239 (UHF female) * Receive antenna input is 75 ohm F connector * Receive outputs are standard 75 ohm Type F connectors * Inputs are 50 ohm BNC or 75 ohm F (Optional transformer module available) * Safe switching--transmit antenna is always connected to transceiver on power-off * Hot switching lockout--disables receive antenna during transmit mode (Optional DXE-TRI-PM can be set to short the RX ANT line) * Versatile--allows inclusion of Optional RF preamplifiers and other plug-in modules * Simple 13.8 Vdc input for all operations An indispensable accessory for the DX enthusiast and useful for any Amateur's shack, DX Engineering RTR-2 Modular Receive-Transmit Interfaces can help you expand and improve your station's antenna connections and the protection of your equipment.

4.92 out of 5 stars ( 12 )

$375.99

DX Engineering Radial Wire Metal Anchor Pins

DX Engineering radial wire metal anchor pins are perfect for fastening radials below the grass line to eliminate the risk of damaging your radials during lawn maintenance. They are manufactured from 11-gauge steel and are 6 in. long to help keep the cables buried properly.

4.87 out of 5 stars ( 39 )

$22.99

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$59.99