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18 Results Found For "Stack"
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COMTEK Stack 3 Yagi Switch Control Consoles
COMTEK Stack 3 Yagi Switch Control Consoles are available as replacements for Stack 3 Yagi Systems. When connected to the Stack 3 Switch Relay Unit, these control consoles allow you to select one antenna, all antennas, or any combination of two antennas. Indicator lights for each antenna tell you at a quick glance which antennas are selected. Choose either 115 V AC or 12 V DC control console operation. Keep using your Yagis together! Order COMTEK Stack 3 Yagi Switch Control Consoles from DX Engineering!
Not Yet Reviewed
$124.99
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$125.99
$68.74
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$75.59
DX Engineering PRO-STACK 2 Control Consoles
DX Engineering PRO-STACK 2 Control Consoles are designed for use with DX Engineering PS-2 and PS-2B switches. They require 12 Vdc well-filtered at 2 amps (fused) minimum.
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$195.99
DX Engineering PRO-STACK Broadband Antenna Phasing Switches
DX Engineering PRO-STACK Broadband Antenna Phasing Switches are newly designed to combine two identical Yagi or log periodic beams, or three quarter-wave vertical antennas, into a phased array for enhanced operation. There is no need for coaxial delay lines with the DX Engineering PRO-STACK switches. Just connect your antennas to the phasing switch controller with equal-length 50 ohm lines. PRO-STACK switch units are available with high-quality PTFE-silver plated SO-239 (UHF female) connectors. These relay units are 1-of-3 source voltage controlled at 12-15VDC over a four conductor cable. A matching Control Console is available separately or is included in the PRO-STACK System. These phasing switches can be used for any applications that require the following four basic antenna feed selections: both antenna ports in-phase, both antenna ports out-of-phase, antenna port 1 only, and antenna port 2 only. The default is both output ports in-phase. Impedance matching automatically changes when any antenna port is disconnected. Generally, stacked Yagi antennas are separated vertically greater than 1/2-wavelength free space. Since the DX Engineering PRO-STACK Broadband Antenna Phasing Systems are broadband, they may be easily adapted to larger arrays. For example, four stacked Yagis may be combined by creating two sets of two, and then using a third DX Engineering control console to combine the first two sets. PRO-STACK switches can also be used to feed three quarter wave resonant vertical antennas for a high-gain 4-pattern array. In this arrangement, the center #2 passive element is directly grounded to a good ground radial system at all times, while the end elements #1 and #3 are then fed in various phase relationships by the PRO-STACK. Details are in the complete PRO-STACK PS-2B Instruction Manual linked here in Documentation. Features of the DX Engineering PRO-STACK Broadband Antenna Phasing Switches include these great features: * Power handling up to 5 kW * Broadband coverage on 160-10 meters * High-impact RF shielded weatherproof housing * High-RF tolerant, silver-PTFE SO-239 (UHF female) connectors * Proven DX Engineering RF relays for high performance * Safe 12 VDC relay operation, even on battery or solar power * MOV surge protection on control lines * External, removable control line connector * RoHS-compliant assembly
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$699.99
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$740.00
Hamplus Four Stack II Systems
Hamplus Four Stack II Systems makes it possible to easily and quickly change selections of any in-phase combination of two, three, or four stacked HF beam antennas or an array of HF phased vertical antennas. Plus, Four Stack II Systems can be combined to control antenna selections on any of the array switches by any of the multiple system Control Consoles. This is possible with simple patch cable networking. Up to four operating positions can have access to four different stacked arrays. The Hamplus Four Stack II System provides unprecedented control of your multiple antenna arrays. The 4-Stack Control Console has five illuminated pushbuttons; ANT 1 through 4 select stacked antennas and ENTER aids in programming. Each antenna selection keys works as a one-touch ON, one-touch OFF method, so it is easy to control which of antennas you want to use at a certain time. Trying different combinations of antennas for the transmission and reception can be accomplished independently, quickly and easily. Arrays can be configured differently for receive and transmit without manually switching back and forth. The system is managed and supervised by a microcontroller that has internal software designed to meet the various system functions and easy operation. All control boxes can be interconnected so that any remote console can command any antenna array switch box. The Four Stack II switch box is rugged and capable, with a better design for mounting outdoors, near or under antenna arrays. No extra or special housings are needed. With the internally connected controller cable, the system is an easy, plug-and-play operation. The Four Stack II is available with either Type N female or UHF female (SO-239) connectors for your array. The Four Stack II is rated for 3,000 W maximum RF power and covers 1.8 to 30 MHz. Connection to 50 ohm, low SWR antennas with 50 ohm coaxial cable is required. All combinations of antennas are in-phase only. Achieve complete control of your antenna arrays with Hamplus Four Stack II Stack Systems from DX Engineering!
Not Yet Reviewed
$899.99
DX Engineering PS-3B PRO-STACK Three Antenna Phasing System
Dominate the airwaves with a DX Engineering PS-3B PRO-STACK Three Antenna Phasing System. Achieve ultimate array control and performance with three identical Yagi or Log Periodic directional antennas or use the system for vertical antennas in a phased array. DXE-PS-3B Pro-Stack Units are frequency independent broadband phasing devices that operate with three antennas on any bands, from 160 through 10 meters. Select from twelve combinations of in-phase and out-of-phase for pattern and null steering that wins contests and snags the rarest DX! DXE-PS-3B-P PRO-STACK Three Antenna Phasing Systems consist of one DXE-PS-3B Relay Unit and one DXE-EC-PS3 Control Console with manual 12-position rotary switch. This advanced system requires only 9-conductor control cable and standard 50-ohm feedlines of equal lengths to each antenna. DXE-PS-3B Pro-Stack Broadband Three Antenna Phasing Systems offer these compelling features: - Power Handling up to 5 kW - Broad band coverage on 160-10 meters - RF Shielded Weatherproof Housing - unique protection - DXE-PS-3B has High-RF tolerant, silver - PTFE SO-239 (UHF female) connectors - DXE-PS-3BN-P are high-quality silver-PTFE Type N female connectors - DXE-PS-3BDIN has Amphenol Connex 7-16 DIN Panel Connectors - Proven high current DX Engineering RF Relays - Safe 12 volt DC relay operation - MOV surge protection on control lines - RoHS compliant assembly DXE-PS-3B Broadband Phasing Units provide the greatest flexibility for three identical antennas. This relay unit contains a broad-bandwidth high-power 2:1 impedance matching transformer. This eliminates common requirements of using mixtures of 75 ohm and 50 ohm phasing or delay cables for impedance matching. Feedlines to each antenna from the relay unit must be the same cable of the same length and match the antenna impedance. So all of them need only be as long as the longest, to reach from the antennas to the relay unit. While it is best to have feedlines of equal electrical lengths, there is no need to closely phase-match cables; cutting the antenna feedlines made from the same coax to equal physical lengths is sufficient. To ensure lowest SWR, impedance matching automatically changes when any antenna is disabled. By switching between antennas at different heights above ground and/or changing the phase relationship between multiple antennas. The old standard system in stacks was to activate or disable specific antennas in the stack to change pattern. However, with the Pro-Stack system, gain remains higher when all antennas are driven and phase is changed, plus this system allows phase inversion as well as the ability to switch any single antenna out of the array. Signals arrive at your antenna system from different azimuth directions and different elevation angles. Adding a stacking phasing system to a rotational array adds the ability to steer the pattern of the antenna array in two planes, azimuth and elevation, and to move the major lobe and nulls. This is accomplished by switching between three identical antennas that are properly spaced for phasing, as well as changing the phase relationship between the antennas to effect changes in the null positons of their elevation patterns. The greatest advantage of equipping your array with a DX Engineering Pro-Stack is the ability to move debilitating pattern nulls away from signal arrival angles. While gain makes a marginal improvement, moving a 20 to 40 dB null can make a phenomenal change in reception. So, the Pro-Stack can make the difference between a barely readable and a strong signal, thus providing the performance edge needed to work rare DX - and win contests. Note: Whenever the DX Engineering "Documentation" tab is available, please look at the associated files for additional product information. Get a DX Engineering PS-3B PRO-STACK Three Antenna Phasing System for your winning antenna array.
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$1,101.98
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$1,205.98
DX Engineering PS-3B PRO-STACK Three Antenna Phasing Units
DX Engineering PS-3B PRO-STACK Three Antenna Phasing Units offer the ultimate performance for combining three identical Yagi or Log Periodic directional antennas and may be used for vertical antennas in a phased array that cover any band, from 160 through 10 meters. Pro-Stack frequency independent broadband phasing devices operate optimally with three properly spaced mono-band antennas, but can be used with three identical stacked multi-band beam antennas, for pattern and null steering that wins contests and snags the rarest DX! Signals arrive at your antenna system from different azimuth directions and different elevation angles. Adding a stacking phasing system to a rotational array adds the ability to steer the pattern of the antenna array in two planes, azimuth and elevation, and to move the major lobe and nulls. The greatest advantage of Pro-Stack arrays is the ability to move harmful pattern nulls away from signal arrival angles. While gain makes a marginal improvement, moving a 20 to 40 dB null can be a phenomenal change, so the Pro-Stack can make the difference between a barely readable and a strong signal, providing the performance edge needed to work rare DX - and win contests. DXE-PS-3B Pro-Stack Phasing Units are 50 ohm relay systems that handle up to 5 kW. A separate user-supplied automated controller or the optional DX Engineering DXE-EC-PS3 Control Console for these 12-position rotary switch selections: - Three antenna ports in phase, default with no power to control console. - Antenna port 1 only - Antenna port 2 only - Antenna port 3 only - Port 2 out of phase, Port 3 in phase - Port 1 out of phase, Port 3 in phase - Port 1 out of phase, Port 2 in phase - Ports 2 and 3 in phase - Ports 1 and 3 in phase - Ports 1 and 2 in phase - Ports 1 and 2 in phase, Port 3 out of phase - Ports 1 and 3 in phase, Port 2 out of phase - Port 1 out of phase, Ports 2 and 3 in phase These PRO-STACK units may also be used for other applications requiring these feedline selections. To ensure lowest SWR, impedance matching automatically changes when any antenna is disabled. By switching between antennas at different heights above ground and/or changing the phase relationship between multiple antennas. The old standard system in stacks was to activate or disable specific antennas in the stack to change pattern. However, with the Pro-Stack system, gain remains higher when all antennas are driven and phase is changed, plus this system allows phase inversion as well as the ability to switch any single antenna out of the array. DXE-PS-3B Broadband Phasing Units provide the greatest flexibility for three identical antennas. This relay unit contains a broad-bandwidth high-power 2:1 impedance matching transformer. This eliminates common requirements of using mixtures of 75 ohm and 50 ohm phasing or delay cables for impedance matching. Feedlines to each antenna from the relay unit must be the same cable of the same length and match the antenna impedance. DXE-PS-3B Pro-Stack Broadband Three Antenna Phasing Units feature: - Power Handling up to 5 kW - Broad band coverage on 160-10 meters - RF Shielded Weatherproof Housing - unique protection - DXE-PS-3B has High-RF tolerant, silver - PTFE UHF connectors - DXE-PS-3BDIN has Amphenol Connex 7/16 DIN Panel Connectors - DXE-PS-3BN-P are made with high-quality silver-PTFE Type N female connectors - Proven high current DX Engineering RF Relays - Safe 12 volt dc relay operation - MOV surge protection on control lines - RoHS compliant assembly Get a DX Engineering PS-3B PRO-STACK Three Antenna Phasing System for your winning antenna array.
Not Yet Reviewed
$895.99
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$999.99
DX Engineering PRO-STACK 3 Control Consoles
DX Engineering PRO-STACK Three Antenna Control Consoles, model DXE-EC-PS3, are custom made twelve-position rotary switch controls for manual operation of PRO-STACK Broadband Three Antenna Phasing Relay Units, models DXE-PS-3B and DXE-PS-3BDIN. DXE-EC-PS3 Control Consoles offer the following features: * Stainless Steel Housing * Non-Skid feet * On-Off toggle switch * Green LED power on indicator * Filter capacitors on each control line * Internal automatic resettable fuse * Includes a 2.1mm power plug for +12 V DC power connection Note: Whenever the DX Engineering "Documentation" tab is available, please look at the associated files for additional product information. DXE-EC-PS3 Control Consoles connect to the PRO-STACK Relay Units with 9-conductor control cable, or with 8-conductor cable plus ground using the coaxial cable shield as the ground return. These consoles were designed for the PS-3B series, but may be used for other applications which require a special BCD controller. See the EC-PS3 manual linked in the "Documentation" tab for detail on connections and the BCD truth table.
Not Yet Reviewed
$205.99
Clearance
COMTEK Stack 2 Yagi Switch Control Consoles
COMTEK Stack 2 Yagi Switch Control Consoles are designed for use with newer or older COMTEK Stack 2 systems. These are the control consoles, only. They include a 2.1mm power cord and operate on 12V DC. Station power, if used, must be 12V DC at 1A minimum (fused). A 3-conductor control line between the control console and relay unit is required. Whether you are replacing a damaged console or building a new system from parts, these COMTEK Stack 2 Yagi Switch Control Consoles from DX Engineering are what your stacking system needs!
Not Yet Reviewed
$124.99
$62.50
DX Engineering PRO-STACK Broadband Antenna Phasing Systems
DX Engineering PRO-STACK Broadband Antenna Phasing Systems are designed to combine two identical Yagi or log periodic beams, or three quarter-wave vertical antennas, into a phased array for enhanced directional pattern selections and dramatically improved HF operations. There is no need for special coaxial delay lines with the DX Engineering PRO-STACK systems. Just connect your antennas to the system relay unit with equal-length 50-ohm coaxial cable assemblies. The PRO-STACK switch relay units are available with high-quality PTFE-silver plated SO-239, UHF female connectors. The matching PRO-STACK Control Console operates the system with a 1-of-3 source voltage control format at 12-15V DC with a user supplied four conductor control cable to achieve four different antenna phasing selections. PRO-STACK Broadband Antenna Phasing Systems operate across the 160 to 10 meter range. They have two antenna ports that can be used for any application requiring the four basic selections: 1. BIP - Both antenna ports In-Phase 2. BOP - Both antenna ports Out-of-Phase 3. BOTTOM - Antenna port 1 only 4. TOP - Antenna port 2 only. The unpowered default is 1 - Both ports In-Phase. Impedance matching is automatic in the PRO-STACK even when any antenna port is disconnected. Generally, stacked Yagi antennas are separated vertically with greater than one half wavelength free space. Since the DX Engineering PRO-STACK Antenna Phasing Systems are broadband, they may be easily adapted to larger arrays. For example, four stacked Yagis may be combined by creating two sets of PRO-STACKS, with a third DX Engineering PRO-STACK to combine the first two. PRO-STACK systems may also be used to feed quarter-wave resonant vertical antennas for a high-gain, 4-pattern array. This arrangement requires three verticals, with the center #2 passive antenna element directly grounded to the system ground radial system at all times, while elements #1 and #3 are then fed in various phase relationships by the PRO-STACK. Details are in the complete PRO-STACK PS-2B Instruction Manual linked here in "Documentation" tab. The full- color printed manual is included with the system relay unit. PRO-STACK Broadband Antenna Phasing Systems are available as separate Relay Units for operators who have automated BCD switching devices, and as packaged systems with Relay Unit and matching manual Control Console. Features of the DX Engineering PRO-STACK Broadband Antenna Phasing Systems include: * Power handling up to 5 kW * Broadband coverage on 160-10 meters * High impact shielded weatherproof housing * High-RF tolerant, silver-PTFE SO-239 (UHF female) connectors * Proven DX Engineering RF relays for high performance * Safe 12V relay operation * DC-powered control console allows battery or solar emergency operation * MOV surge protection on control lines * External, removable control line connector * RoHS-compliant assembly Dominate the airwaves with DX Engineering PRO-STACK Broadband Antenna Phasing Systems. * Important Note regarding DX Engineering Protection Plans and Kit Combo Contents NOTE: Protection plans cannot be purchased for combination packages or on applicable devices after shipment. DX Engineering Combination Kits and Packages are designed to help you easily visualize and order the right items for your specific needs. However, we encourage you to contact our experienced Technical Sales Team for assistance. We can help adjust the kit contents, suggest substitutions based on stock availability, and offer DXE Protection Plans for radios and devices when applicable. Contact us for Expert assistance and make informed purchasing decisions with our guidance.
Not Yet Reviewed
$895.98
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$935.99
QRO.cz Stack Match High Power Broadband Antenna Phasing Switches
QRO.cz Stack Match High Power Broadband Antenna Phasing Switches are high-performance broadband antenna combiner designed to impedance match two Yagi antennas to a single transceiver (TRX). Ideal for mono-band, tri-band, or multi-band antenna systems, they support both in-phase (BiP) and out-of-phase (BoP) configurations, enabling advanced stacking and phasing configurations. Whether you're optimizing a contest station or enhancing DX performance, these Stack Match 1-2 switches allow seamless switching between upper, lower, BiP, and BoP modes. Built with high-quality components and housed in a rugged aluminum enclosure makes them a reliable choice for demanding HF operations.
Not Yet Reviewed
$559.99
InnovAntennas 10M or 11M LFA-Q Loop-Fed Quad Beams
InnovAntennas 10M or 11M LFA-Q Loop-Fed Quad Beams from G0KSC represents significant development of LFA Yagis with a substantial difference: LFA-Q (Loop Fed Array Quad) Beams use top and bottom booms with through-boom LFA Yagi-style loops arranged vertically for every element. This very rugged design achieves better gain for a given length of boom and much lower noise for better signal quality compared to conventional Yagi antennas. InnovAntenna LFA-Q quad structure provides high directivity, eliminating unwanted spurious radiation. They achieve great side and rear rejection while retaining excellent gain, front-to-back and SWR bandwidth across the band. These are amazingly compact, high gain directional antennas, constructed to withstand serious weather conditions! Antennas of this series can be built and tuned to operate on a 500 kHz section of the 10 meter 28 MHz Amateur Band or on the 11 meter 27 MHz Citizens Band. The desired band is easily selected by changing the length of the outer element sections during construction – exact dimensions are provided in the instructions. The driven loop element feedpoint impedance is 50 ohms which allows a direct feed at high transmitting power. Vertical stacking of two or more antennas can significantly increase directivity, gain and signal quality; an interesting alternative when available space prevents the installation of long boom beam antennas. Just like other HF quads, LFA-Q vertical loop-fed quads are inherently quieter than a Yagi of the same size, making them a perfect choice for use in any location with high ambient noise level, such as a city or densely populated neighborhood. There is a 10M or 11M LFA-Q Loop-Fed Quad Beam version that matches your space, support, and wallet: - The 2-element economy version has loop spacing booms of only 2.3 ft. (70 cm); - The 3-element compact version booms are 10.5 ft. (3.2m) in length: - The 4-element performance model boom lengths are 26.9 ft. (8.2 m). Each LFA-Q is very stable mechanically, with mast clamps on each boom, top and bottom! Thanks to the use of high-quality materials, extensive modeling and testing, the durability and reliable performance of InnovAntennas 10M or 11M Loop-Fed Quad Beams is undeniable.
Not Yet Reviewed
$519.99
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$1,419.99
DX Engineering Skylark Dual-Band Yagi Antennas
DX Engineering Skylark™ Dual-Band Yagi Antennas cover 17 and 12 meters and have no moving parts, support instant band changes, have no UV challenges, and no antenna-related lightning issues! Skylark™ antennas require no tuning and offer an SWR of less than 1.3:1 over the entire width of both bands. DX Engineering's Skylark™ utilizes aluminum and stainless steel construction, operate from a single feed line, and have a 90 mph wind survival rating. At only 38 lbs., Skylark™ antennas are light enough to be easily installed. These antennas are supplied complete with all mounting hardware for a 2 in. mast. Their stainless steel U-bolts and unique boom to mast mounting system make for very easy installation. Check these DX Engineering Skylark™ features: * Gain on 17 meters: 7.95 dBi * Gain on 12 meters: 7.75 dBi * Front to back on 17 meters: 21 dB * Front to back on 12 meters: 24 dB * 16 ft. boom * Wind loading: 6.5 square feet * Longest element is 27 ft., 8 in. * Turning radius is 16 ft. Note: Whenever the DX Engineering "Documentation" tab is available, please look at the associated files for additional product information. These Skylark™ antennas are a perfect match for stacking with any classic tri-bander. Your tri-bander would support 20, 15, and 10 meters, while the Skylark™ adds 17 and 12 meters. They are also a perfect companion for DX Engineering Skyhawk™ Tri-Band Yagi Antennas. Whatever antenna your tower currently supports, one of these DX Engineering Skylark™ Dual-Band Yagis from DX Engineering will be a worthwhile addition to your antenna farm!
Not Yet Reviewed
$1,999.98
Momobeam Mono4-20 Monoband Yagi Antennas
Momobeam Mono4-20 Monoband Yagi Antennas are full size, four element Yagi antennas designed to deliver excellent SWR bandwidth, optimal gain, and impressive front to back performance. These antennas remain lightweight for effortless handling while offering the strength needed to withstand harsh weather conditions. MONO4 20 excels in multi stacked array configurations. Stacks can be optimized for maximum forward gain or arranged to broaden directional coverage across multiple regions—making them an excellent choice for contest stations and serious DX operators. Built on a square boom, they are supplied with an assembly tool, spare hardware components, and clearly labeled bolts and aluminum tubes to ensure fast and intuitive assembly. All hardware is packaged in separate, clearly marked bags for added convenience. Mono4-20 can be mounted on a mast or side mounted on towers and require a medium duty rotator. A 3kW RF choke balun is included as standard equipment—an essential component that many manufacturers offer only as an optional upgrade. Momobeam RF Chokes are built using high quality, low loss, double shielded coaxial cable with a Teflon dielectric, combined with carefully selected ferrite material sleeved over the cable. Together, these elements create a high impedance path for RF, providing excellent isolation between the antenna and the coaxial feedline.
Not Yet Reviewed
$2,230.99
Momobeam TRI7-SF Separate Feed 20/15/10 Meter Tri-Band Yagi Antennas
Momobeam TRI7-SF Separate Feed 20/15/10 Meter Tri-Band Yagi Antennas are the smallest triband antenna in the Momobeam lineup that features independent feed points. These antennas use full size reflector and driver elements on both 20 and 15 meters, ensuring excellent gain and bandwidth. On 10 meters, they incorporate a three element design—reflector, driver, and director—optimized to deliver strong, reliable performance across the band. The TRI7 SF series is perfectly suited for multi transceiver stations, offering exceptional versatility thanks to its separate feed architecture. This design allows the antennas to be used simultaneously by three different transceivers, functioning much like three individual monoband antennas when paired with appropriate band pass filters to protect station equipment. As a result, operators can significantly reduce the number of antennas installed on their towers while maintaining full operating capability. Each TRI7 SF antenna includes a complete accessory set, featuring an assembly tool, spare hardware, and a pair of aluminum replacement tubes. Three high quality 3kW RF choke baluns are also supplied as standard—expensive components that many antenna manufacturers offer only as optional extras. These included baluns help ensure clean, efficient operation across all bands. Assembly is intentionally simple and intuitive. The antennas use a square boom design, with every piece of hardware packaged in individually labeled bags and all aluminum tubes clearly marked. This thoughtful organization makes installation fast, clear, and error free, even for complex station configurations. With their separate feed capability, TRI7 SF antennas make it easy for station owners to transition into multi operator contest categories without requiring additional tower space. Key advantages of this solution include a reduced number of installed antennas, lower wind load, elimination of external diplexers or triplexers, and straightforward integration into stacked or multi antenna arrays if desired. These antennas require three coaxial cables and a medium to light duty rotator. With their combination of versatility, efficiency, and thoughtful engineering, the TRI7 SF Separate Feed Yagi Antennas offer a powerful and space efficient solution for serious Amateur Radio operators.
Not Yet Reviewed
$2,039.99
Momobeam Tetra14-SF 40/20/15/10-Meter Separately Fed Yagi Antennas
Momobeam Tetra14-SF 40/20/15/10-Meter Separately Fed Yagi Antennas represent a new generation of compact, high performance HF solutions for contesters, DXers, and multi operator stations. These antennas are designed to eliminate the long standing challenges created by towers crowded with multiple closely spaced monoband arrays. In many installations, such configurations cause unavoidable interaction between antennas, resulting in distorted radiation patterns and degraded performance. The Tetra14 SF overcomes these issues through an innovative separately fed architecture that delivers true multiband capability without compromise. Tetra14 SF features independent feed points for all four HF bands, allowing stations to operate four transceivers or amplifier setups simultaneously. With appropriate band pass filtering, these antennas behave as though each operator has their own monoband Yagi, while requiring only a fraction of the tower space normally consumed by stacked arrays. This approach not only reduces structural load and visual clutter but also produces cleaner patterns, stronger gain, and more predictable performance during competitive operating environments. To ensure top-tier operation on every band, these antennas use carefully optimized element spacing developed through advanced simulation. The 40 meter section employs a compact two element Reflector/Driver design incorporating end loading, a highly effective method pioneered by W6NL. This configuration retains the performance characteristics of a full size Yagi while significantly reducing element length, making installation more practical for a wide variety of tower systems. On 10, 15, and 20 meters, each antenna uses a refined four element arrangement consisting of a reflector, driven element, and two directors, delivering excellent gain and forward directivity across the higher frequency bands. Durability, ease of assembly, and station friendly construction are central to the Tetra14 SF design philosophy. These antennas utilize a strong square boom structure, with all aluminum elements and hardware components clearly labeled for efficient assembly. Every antenna includes an assembly tool, spare hardware, and a complete set of four high quality 3kW RF choke Baluns, a component other manufacturers often sell as an optional upgrade. Installation is straightforward, requiring four coax feedlines—one for each band—and a medium to heavy duty rotator. Momobeam Tetra14 SF Separately Fed 4 Band Yagi Antennas provide exceptional performance, reduced tower complexity, and true multi operator capability. They combine the advantages of monoband arrays into a single, compact, and intelligently engineered system. For contesting groups, DXpeditions, or high-demand stations seeking high performance on 10, 15, 20, and 40 meters, these antennas offer a modern and efficient solution that delivers outstanding on air results.
Not Yet Reviewed
$6,633.99
Momobeam TRI9-SF Separate Feed 20/15/10 Meter Yagi Antennas
Momobeam TRI9 SF Separate Feed 20/15/10 Meter Yagi Antennas are an ideal solution for operators seeking high performance tri band antennas with independent feed points. Each band is equipped with a full three element configuration—reflector, driver, and director—providing excellent gain, pattern control, and operating efficiency across 20, 15, and 10 meters. These antennas deliver balanced, consistent performance that appeals to both contesters and demanding DX enthusiasts. TRI9 SF antennas are perfectly suited for expanding contest stations and multi operator environments. Their separate feed architecture allows three operators to transmit simultaneously, each using a dedicated band, effectively functioning as if three individual monoband antennas were installed. When paired with appropriate band pass filters to protect equipment, this setup significantly optimizes tower space and reduces the complexity normally associated with multi band installations. This separate feed approach brings several key advantages to station design: fewer antennas are required overall, wind load on the tower is reduced, no external diplexer or triplexer is needed, and multi antenna or multi band stacking becomes simple to configure if desired. The result is a cleaner, more efficient station layout with improved upgrade potential for competitive operating. Each TRI9 SF antenna includes a complete accessory package, featuring an assembly tool and spare parts such as bolts and a pair of aluminum tubes. Three high quality 3kW RF choke baluns are supplied as standard—valuable components that many antenna manufacturers offer only as optional add-ons. Their inclusion ensures excellent feed line isolation and cleaner operating conditions across all three bands. Assembly is straightforward and intuitive. The antennas use a square boom design, and all hardware is organized in individually labeled bags, with each aluminum tube clearly marked for quick identification. This thoughtful packaging makes installation fast, accurate, and stress free, even for operators assembling complex multi antenna systems. TRI9 SF antennas require three coaxial cables and a medium load rotator for proper operation. With their combination of robust engineering, multi transceiver capability, and space efficient design, these antennas offer a powerful solution for serious Amateur Radio operators looking to enhance their contesting capabilities with minimal tower real estate.
Not Yet Reviewed
$2,762.99
Momobeam Mono4-10 Monoband Yagi Antennas
Momobeam Mono4 10 Monoband Yagi Antennas are full size, four element antennas engineered to deliver excellent SWR bandwidth, optimal forward gain, and strong front to back performance across the 10 meter band. Despite their robust construction, these antennas remain lightweight, making them easy to handle while still offering the durability needed for harsh weather conditions. Designed for high performance installations, the MONO4 10 excels in multi stacked array configurations. Stacks can be optimized for maximum forward gain or arranged to broaden directional coverage across multiple regions—making them an excellent choice for contest stations and serious DX operators. Built on a sturdy square boom, each antenna comes with an assembly tool, spare hardware (bolts and aluminum tubing), and fully labeled components. All hardware bags and aluminum tubes are clearly marked, ensuring quick, accurate, and hassle free assembly. A 3kW RF choke balun is included as standard equipment—an essential component that many manufacturers offer only as an optional upgrade. Momobeam RF Chokes are built using high quality, low loss, double shielded coaxial cable with a Teflon dielectric, combined with carefully selected ferrite material sleeved over the cable. Together, these elements create a high impedance path for RF, providing excellent isolation between the antenna and the coaxial feedline. The Mono4-10 requires a medium duty rotator for proper operation.
Not Yet Reviewed
$955.99
Momobeam Mono4-15 Monoband Yagi Antennas
Momobeam Mono4 15 Monoband Yagi Antennas are full size, four element antennas engineered to deliver excellent SWR bandwidth, optimal gain, and strong front to back performance on the 15 meter band. Lightweight for easy handling yet built to withstand harsh weather conditions, these antennas provide reliable performance for both standalone installations and multi stacked array configurations. The MONO4 15 performs exceptionally well in stacked systems, whether optimized for maximum forward gain or arranged to broaden directional coverage across wider geographic regions—making it a powerful choice for serious DX operators and advanced contest stations. Constructed on a sturdy square boom, each antenna includes an assembly tool, spare hardware (bolts and aluminum tubing), and fully labeled components. All hardware is packaged in separate, clearly marked bags, and every aluminum tube is labeled to ensure fast, accurate, and stress free assembly. Suitable for mast mount or side mount tower installations, the MONO4 15 requires a medium duty rotator for proper operation. A 3kW RF choke balun is included as standard equipment—an essential component that many manufacturers offer only as an optional upgrade. Momobeam RF Chokes are built using high quality, low loss, double shielded coaxial cable with a Teflon dielectric, combined with carefully selected ferrite material sleeved over the cable. Together, these elements create a high impedance path for RF, providing excellent isolation between the antenna and the coaxial feedline. The Mono4-10 requires a medium duty rotator for proper operation.
Not Yet Reviewed
$1,329.99