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Momobeam HF Directional Antennas
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 Tetra15-DF 40/20/15/10M Dual Feed Yagi Antennas
Momobeam Tetra15 DF 40/20/15/10M Dual Feed Yagi Antennas are multiband HF Yagi antennas engineered with an exceptionally compact design while maintaining high level performance across all four operating bands. On 40 meters, these antennas utilize a Reflector/Driver configuration with element lengths reduced through end loading, a technique originally adopted by W6NL that preserves near full size performance while minimizing overall dimensions. On 20 meters, they employ full-size elements arranged as a reflector, driver, and director, providing strong forward gain and clean directional behavior. For both the 15 meter and 10 meter bands, the antennas incorporate four active elements configured as a reflector, driver, and two directors, ensuring excellent gain and front to back ratios across the higher frequency ranges. Their dual feed architecture allows contest stations to operate on two bands simultaneously, delivering monoband level performance to each operator when paired with appropriate band pass filtering. These antennas include an assembly tool along with spare bolts and aluminum tubing, and they are built on a square boom structure that simplifies the installation process. All hardware is packaged in individually labeled bags, and each aluminum element is clearly marked, enabling fast, intuitive assembly. The system requires two separate coaxial feedlines—one dedicated to the 40 meter band and the other serving the combined 20/15/10 meter array. A medium to heavy duty rotator is recommended for proper operation. Each antenna is supplied with two 3kW RF choke baluns as standard equipment, a notable advantage since many competing manufacturers only offer these components as optional upgrades.
Not Yet Reviewed
$6,271.99
Momobeam Tetra17-FS 40/20/15/10M Full-Size Yagi Antennas
Momobeam Tetra17-FS 40/20/15/10M Full-Size Yagi Antennas are designed to deliver the performance, reliability, and ease of use that contesters and demanding HF operators expect. These quad band antennas offer full size elements on every band, ensuring maximum efficiency, excellent gain, and wide operating bandwidths—all without the use of traps. Their compact mechanical design brings together high performance and reduced tower footprint, making them an ideal choice for stations looking to significantly upgrade capability across multiple HF bands. Each Tetra17 FS antenna is engineered using advanced modeling software that carefully defines the spacing and geometry of all elements. The result is a fully optimized array that delivers stable SWR curves, strong forward gain, and clean radiation patterns. Combined with Momobeam's well known mechanical durability and robust construction standards, these antennas represent a uniquely powerful balance of electrical performance and long term reliability. Assembly has been intentionally designed to be simple and intuitive. The Tetra17 FS antennas use a strong square boom for superior alignment and structural stability, and all aluminum tubes and hardware are clearly labeled to streamline the installation process. Hardware is packaged in organized, marked bags, allowing operators to complete assembly efficiently and confidently. These antennas require only a single coax feedline for operation, thanks to their unified feed design, and they are built to handle the demands of heavy-duty rotators suitable for multi band Yagi of this size. Each antenna also includes a high quality 3 kW RF choke, supplied as standard equipment to ensure proper current balance and clean RF behavior at the feed point. Momobeam Tetra17-FS 40/20/15/10M Full-Size Yagi Antennas provide a remarkable combination of high performance, wide bandwidth, rugged construction, and user friendly assembly. Their full size, trap free design sets them apart from conventional multiband solutions, offering contest grade capability in a compact footprint. For operators who want exceptional results across four major HF bands without the compromises typical of multiband arrays, the Tetra17 FS stands out as a truly exceptional choice.
Not Yet Reviewed
$8,070.99
Momobeam Tetra18-DF 40/20/15/10M Dual Feed Yagi Antennas
Momobeam Tetra18 DF 40/20/15/10M Dual Feed Yagi Antennas represent a versatile and high performance quad band antenna solution engineered for operators who demand exceptional results. These antennas deliver efficient, optimized performance while maintaining a compact structure, making them ideal for contesting, DXing, and multi station operation. On 40 meters, the Tetra18 DF antennas use a classic Reflector/Driver configuration, with element lengths compacted through end loading. This design approach, originally adopted by W6NL, preserves the on air performance and gain characteristics of a full size 40 meter Yagi while significantly reducing the physical span of the elements. The result is a mechanically manageable 40 meter system that still performs like a full sized antenna. Across 20, 15, and 10 meters, these antennas employ full size elements arranged in proven high gain configurations: four elements on 20 meters, five elements on 15 meters, and seven elements on 10 meters. This design provides excellent forward gain, clean patterns, and wide bandwidth without the compromises of traps, loading coils, or mechanical switching systems. Because no traps, motors, relays, or other moving parts are used, the antennas achieve exceptional long term reliability and mechanical simplicity. All components are built from durable, high quality aluminum to ensure performance and longevity in demanding environments. The dual feed system is a defining feature of the Tetra18 DF antennas. It enables contest stations to operate these antennas as true multi monoband systems. One transceiver/amplifier can operate on 20/15/10 meters, while a second station transmits on 40 meters simultaneously—an arrangement made possible by the fully isolated feed architecture. This configuration maximizes multi operator efficiency, with the only added requirement being the use of external band pass filters (BPFs) to protect equipment between stations. Each Tetra18 DF antenna is supplied with a dedicated Assembly Tool, spare hardware, and two aluminum tube sections to ensure smooth installation and long term maintainability. Additionally, two high quality 3kW RF choke baluns are included as standard equipment—a significant advantage, as many manufacturers treat these essential components as optional add on. Assembly is straightforward thanks to the use of a square boom, clearly labeled aluminum elements, and individually packaged and labeled hardware. These design choices make the construction process intuitive and efficient, even for first time installers. The system requires two coaxial feedlines—one dedicated to the 40 meter feed point and the other feeding 20/15/10 meters —and a heavy duty rotator to accommodate the overall mechanical load. Momobeam Tetra18 DF Dual Feed Yagi Antennas offer outstanding quad band performance, unmatched reliability, and advanced operating flexibility. They are engineered to satisfy contest grade requirements while maintaining ease of installation and long term mechanical stability, making them a standout choice for serious HF stations seeking the highest levels of performance across the 40/20/15/10 meter bands.
Not Yet Reviewed
$7,469.99
Momobeam Mono3-40FS Monoband Yagi Antennas
Momobeam Mono3 40FS Monoband Yagi Antennas are full size, three element antenna systems engineered for exceptional performance on the 40-meter (7MHz) band. Delivering a SWR of < 1.5:1 across 300kHz, these antennas provide strong gain and an excellent front to back ratio, making them ideal for operators who demand maximum efficiency and reliability on 40 meters. Unlike many 40 meter Yagi designs, the MONO3 40FS uses no hairpins or additional matching devices. The antenna is fed directly, and a high quality 3kW RF choke—included as standard—ensures proper isolation and trouble free connection to your coaxial feedline. Built on a rugged square boom, each antenna arrives with an assembly tool, spare hardware (bolts and aluminum tubes), and clearly labeled components. All hardware is supplied in separately marked bags, and every aluminum element is individually labeled to make assembly straightforward and accurate. This antenna is constructed as a heavy duty system, designed to withstand the demanding mechanical stresses that accompany a full size 40 meter Yagi. The element plates are made from thick, U shaped aluminum, and each element is reinforced with both horizontal and vertical tie rods for superior rigidity. Because of the antenna's large physical size, specialized mechanical solutions have been incorporated to ensure long term durability and structural integrity. The telescopic elements begin with a substantial 2.36-inch starting diameter for added strength. Designed for serious installations, the MONO3 40FS requires a heavy-duty rotator and supports typical mast mount configurations.
Not Yet Reviewed
$6,635.99
Momobeam Mono6-20 Monoband Yagi Antennas
Momobeam Mono6-20 Monoband Yagi Antennas are engineered for installations focused on high-performance operation on the 20 meter band. These antennas feature six fully optimized, full size elements that deliver a clean, highly effective radiation pattern and dependable performance across the entire 20 meter band. Their design ensures a consistently flat SWR below 1.5:1 across the entire band, supporting efficient and stable operation without additional tuning. Because of their substantial size and the mechanical demands of the Mono6-20, Momobeam incorporates reinforced engineering throughout the structure. The antennas use a robust square boom design, offering exceptional rigidity and long term durability, even in challenging weather environments. To simplify assembly, Momobeam includes an installation tool along with spare hardware such as bolts and aluminum tubing. All components are packaged in clearly labeled bags, and each aluminum element is marked for easy identification. This thoughtful packaging approach ensures a smooth and efficient assembly process, even for first time installers. Each antenna comes equipped with a 3kW RF choke to provide proper feedline isolation and help operators achieve clean RF performance right out of the box. Due to their significant wind load and physical mass, the Mono6 20 antennas require a heavy duty rotator capable of handling a large mechanical load for safe and accurate directional control. Mono6-20 is ideal for serious HF enthusiasts, DX chasers, and contest operators seeking maximum performance and rugged reliability on the 20 meter band.
Not Yet Reviewed
$5,779.99