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11 Results Found For "Stack"
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.
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$349.99
M2 Antennas 440-11X 70cm Yagi Antennas
M2 Antennas 440-11X 70cm Yagi Antennas are computer optimized to cover the entire 70-centimeter Amateur band. This broadband Yagi covers 420-450MHz and features an excellent pattern and good gain across the band. Its rear boom mast bracket allows simplified mounting vertically for FM or horizontally for Tropo on SSB/CW/Digital/ATV and is ideal for stacking two or more for additional gain. Its light weight yet sturdy construction keeps the cost low and the performance high. They are ideal for repeater linking, point-to-point applications, general 440 MHz FM base station and casual 432 MHz weak signal operations. The heart of the 440-11X is a unique Driven Element Module with superior weather resistance and power handling abilities. All connectors are O-ring sealed to the CNC-machined block and internal connections are sealed in a space-age silicone gel with a dielectric strength nearly 4 times greater than air. The Balun coax connectors are triple O-ring sealed. Other key mechanical and electrical parts are CNC-machined from 6061-T6 aluminum and all hardware, except U-bolts, is stainless steel. The 440-11X replaces the very popular M2 Antennas 420-50-11. The "X" series of antennas are all designed to keep the packaging under 48" long to minimize oversize surcharges applied by shippers. The "X" series antennas offer the same performance as its predecessor, but with shorter boom sections. The boom sections also have a thicker wall for added strength. A side benefit of the "X" series antennas are that they are more portable with the smaller sections. The M2 Antennas 440-11X offers you uncompromising performance, enduring mechanical construction, and long-term electrical integrity. Order MSQ-440-11X from DX Engineering.
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$258.99
M2 Antennas 2M7 2 Meter Yagi Antennas
M2 Antennas 2M7 2 Meter Yagi Antennas are top quality, capable beams for the operator who wants the convenience of a short, 9 ft. boom, in an antenna that can handle full power and deliver true performance over the long term. The 2M7's are computer optimized Yagis that will outperform longer old design antennas. They cover the whole band with only slight performance degradation at the band edges. Their side lobes are very low and are perfect for stacking two or more for increased gain. Their light weight and durability make them great for portable hill topping and rover operations. M2 Antennas 2M7 are built for long term electrical and mechanical integrity. Their CNC machined "T" Match Block features O-ring sealed connectors and is internally sealed with a space-age silicone gel with nearly four times the dielectric strength of air. Full power operation is no problem for these antennas. Their elements are 6061-T6 3/16 in. aluminum rod, mounted through the boom on UV stabilized button insulators. All hardware is stainless steel except U-bolts. Other key electrical and mechanical parts are CNC machined for accuracy and durability. M2 Antennas 2M7 2 Meter Yagi Antennas can take your FM, SSB, CW or digital mode 2 meter operations to a new level. Get yours from DX Engineering!
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$258.99
M2 Antennas Solid Center Cross Booms
M2 Antennas Solid Center Cross Booms, model CB60, also known as FGCB60 or FCB60, are used for critical VHF/UHF/SHF satellite uplink-downlink systems, EME (moon bounce) and long range terrestrial operations. These Cross Booms feature a super strong 1.625 in. solid aluminum rod center section with two 2 in. outside diameter, 60 in. long, 1/4 in. thick-wall fiberglass tubing sections, to secure large systems or arrays. Built for years of slip free service, Solid Center Cross Booms eliminate the worry of crushing, cracking or splintering the center portion of an all fiberglass cross boom. One of the uses for these extra heavy duty solid center 11 ft. long cross booms are in an azimuth-elevation rotator (AZ-EL). Two medium or long boom Yagi antennas of two different VHF/UHF bands are mounted at each end of the cross boom, as required for satellite uplink and downlink operations. These cross booms are also used for horizontally stacking a phased pair of 2 meter cross polarized Yagi antennas for all-mode terrestrial operations including on FM and SSB/CW, as well as for a pair of circularly polarized Yagi beams for EME. These two applications require a non-metallic cross boom mounted horizontally on a rotating mast or in the AZ-EL rotator, respectively. The ultimate satellite, EME or terrestrial VHF/UHF antenna system uses two of these cross booms mounted vertically at the ends of an 11 ft. metallic cross boom. This type of four cross or circularly polarized Yagi array, horizontally and vertically stacked, provides incredible gain and front-to-back performance, effectively quadrupling your effective radiated power (ERP) and dramatically increasing your reception capabilities. DX Engineering also carries the coaxial cables and M2 Antennas Beams and Power Dividers to build your best-ever satellite, EME or long haul terrestrial phased array installation. Mount them all with M2 Antennas Solid Center Cross Booms from DX Engineering.
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$389.99
M2 Antennas 440-18X 70cm Yagi Antennas
M2 Antennas 440-18X 70cm Yagi Antennas feature a computer optimized broadband design with an excellent pattern and good gain across its bandwidth. It can be mounted vertically or horizontally and is ideal for stacking two or more for additional gain. Their light weight yet sturdy construction keeps the cost low and the performance high. Use them for FM repeater and simplex, ATV, OSCAR, or long haul tropo operations. We guarantee you will be impressed. The heart of these antennas are the M2 Antennas' unique Driven Element Module with superior weather resistance and power handling abilities. All connectors are O-ring sealed to the CNC machined block and internal connections are sealed in a space age silicone gel with a dielectric strength nearly 4 times greater than air. The Balun coax connectors are triple O-ring sealed. Other key mechanical and electrical parts are CNC machined from 6061-T6 aluminum and all hardware is stainless steel except the U-bolts. Now redesigned to fit in packaging under 48 in. to save on shipping, M2 Antennas 440-18X 70cm Yagi Antennas offer you uncompromising performance, enduring mechanical construction, and long term electrical integrity. Order yours from DX Engineering today! Specifications of the M2 Antennas 440-18X: Freq. Range: 420 to 453 MHz Gain: 16.64 dBi Front to back: 23 dB, Typical Beamwidth: E=27 deg., H=32 deg. Feed type: Folded Dipole Feed Impedance: 50 ohms unbalanced Max. VSWR: 1.2:1 Typical Input Connector: N Female Power Handling: 1.5 kW Boom Length / Dia.: 137 in. / 1 to 3/4 in. Max. Element Length: 14 in. Turning Radius: 69 in. Stacking Distance: 51 in High and 52 in. Wide Mast Size: 1.5 to 2 in. Wind Area / Survival: 0.68 sq. ft. / 100 MPH Weight/ Ship Weight: 5 lbs. / 7 lbs.
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$300.99
M2 Antennas 6M3 6 Meter Yagi Antennas
M2 Antennas 6M3 6 Meter Yagi Antennas represent the high quality design and unmistakable performance that Amateurs around the world have come to expect from M2 Antennas. 6M3 6 Meter Yagis are light but rugged and computer-optimized to offer low wind load and great performance for their size. They will complement the rest of your antenna and tower systems. Quick and easy to assemble, 6M3s are also great for mountain topping, grid expeditions and DXpeditions. 6M3 6 meter Yagis feature machined aluminum mounting blocks and sealed "T" match blocks, just like their larger M2 Yagi brothers. They are perfect for the Ham trying 6 meters for the first time, or for a seasoned Amateur who may use several in a stacked array for improved gain. These antennas are cut for the low end of the band and are ready for horizontal polarization operation on SSB and CW. A tuning chart is included for adjustments to the FM segments of the 6 meter band, since these are also great antennas for the 6 meter FM repeater or simplex enthusiast. Therefore, 6M3 Yagis may be installed with the elements vertical, for vertical polarization. A great implementation of a simple and time-tested design, M2 Antennas 6M3 6 Meter Yagi Antennas are ready to give you beam antenna performance at a reasonable price! Get yours today from DX Engineering!
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$385.99
M2 Antennas 2M9X 2 Meter Yagi Antennas
M2 Antennas 2M9X 2 Meter Yagi Antennas provide two sets of elements to build either a horizontally polarized SSB-CW-Digital beam or a vertically polarized FM beam, replacing the separate 2M9SSB and 2M9FM. Performance is optimized for a specific mode and frequency range, with no compromises to achieve unneeded bandwidth. The 2M9X SSB covers 144-146 MHz and the 2M9X FM covers 145-148 MHz. Where do you want to make yourself heard? Both models are ideal building blocks for a small turning radius, high-gain stacked array. Two horizontally polarized, vertically stacked 2M9Xs yield the same gain (14.8 dBd) as M2's 33 ft. 2M5WL, but with about 1/2 the turning radius. Great for QTHs that won't permit a long boom Yagi. The 2M9X can be stacked on a cross boom for the same gain increases, and the turning radius is still a very manageable 10 ft. Always designing and building new antennas to fit the needs of amateur radio operators, the "X" Series of antennas were redesigned to keep the packaging under 48 in. long, to minimize oversize surcharges applied by shippers. The "X" Series antennas offer the same performance as its predecessor, but with shorter boom sections. The boom sections also have a thicker wall for added strength. A side benefit of the "X" Series antennas are that they are more portable with the smaller sections. At the heart of M2 Antennas VHF beams is a driven element module originally designed for maritime ATS satellite service. All connectors are O-ring sealed to the CNC-machined block. Internal connections are sealed with a space-age silicone gel with nearly four times the dielectric strength of air. The balun connectors are triple sealed on the coax and nut-sealed at the block connectors. The type N feed connector uses a gold-plated, beryllium copper center pin. Elements are 6061-T6 3/16 in. solid rod with UV stabilized polyethylene Button insulators and stainless steel keepers. Thousands of these type elements are in amateur and commercial service with NO failures! Booms are constructed of 6061-T6 aluminum alloy tubing. Other key electrical and mechanical components are CNC machined for accuracy and durability. All hardware is stainless steel except the U-bolts. For uncompromising performance and long-term electrical and mechanical integrity, the 2M9X is unmatched. Specifications the M2 Antennas 2M9X: Frequency range (2M9X SSB): 144 To 146 MHz Frequency range (2M9X FM): 145 To 148 MHz Gain: 14.1 dBi Front to back: 20 dB Typical Beamwidth: E=35 degrees; H=38 degrees Feed type: "T" match Feed impedance: 50 Ohms unbalanced Maximum VSWR: 1.2:1 typical Input connector: N female Power handling: 1.5 kW Boom length/diameter: 14 ft. 6 in./1 to 3/4 in. OD Maximum element length: 40 5/8 in. Turning radius: 8 ft. Stacking distance: 9 ft. 6 in. High and 10 ft. Wide Mast Size: 1 1/2 to 2 in. Nom. Wind area/survival: 1.2 sq. ft./100 mph Weight/ship weight.: 5 lbs./7 lbs.
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$403.99
InnovAntennas 50-LFA-4-LN 4-Element 50 MHz Yagi
InnovAntennas 50-LFA-4-LN 4-Element 50 MHz Yagi was specifically designed for city use in noisy environments. This Loop-Fed model is optimized for front-to-back performance on relatively short boom of 11.15 ft. (3.40 meters), to reject as much local noise as possible. This antenna offers very good forward gain of 9.4 dBi (14.9 dBi at 10m above ground), and an exceptional 32 dB front-to-back rating, and SWR less than 1.4:1 across the 50-50.5 MHz range. The low profile LFA dipole achieves a significant reduction of noise, allowing clear reception of much weaker signals, a key component of operational improvements and success. The 50-LFA-4-N includes a center mount boom to mast clamp for up to 2 inch masts (50mm) and is a sleek 1.77 sq. ft. wind load, making this beam ideal for typical 6 meter stations. It is also excellent for stacking to maximize gain, especially when available space restricts the use of a longer boom Yagi. It features a 1.25 in. (32mm) 16-guage square aluminum tubing boom for rugged reliability and low weight. This antenna is made with 1/2 inch (12.7mm) element center sections and 3/8 inch (9.525mm) for the outer elements. The antenna has fully insulated elements which will ensure continuous, high performance for many years to come, regardless of the weather conditions. The introduction of the loop-shaped and phase-fed dipole achieves considerably fewer side lobes in the Yagi directional pattern. With less energy absorbed from the sides and from behind, these antennas are quieter than typical 4 element beams to achieve a higher 6 meter performance level. The 50 MHz Monoband LFA Yagis from G0KSC represent a significant advancement in the development of Yagi antennas. They provide a low-noise front-end for your radio, so you hear more signals. This compact 4-element 50 MHz LFA provides stunning performance across the important section of the 6m band, 50.0 - 50.5 MHz. With a direct 50 Ohm feedpoint, no matching losses and suppression of unwanted noise, InnovAntenna 50-LFA-4-N is hard to beat!
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$489.99
InnovAntennas OP-DES 50 MHz Yagi Antennas
InnovAntennas OP-DES 50 MHz Yagi Antennas are a relatively new development from InnovAntennas. OP-DES stands for Opposing Phase Driven Element System, in which the ends of the dipole radiator of these antennas is angled backwards towards the reflector, parallel to the boom. This results in opposing phase relationships in the ends of the driven element, providing a very clean directional pattern with few side lobes. The OP-DES Yagi has optimized gain over a wide frequency range, while retaining a good front-to-back ratio. The driven element dipole of an OP-DES antenna has a low impedance of 50 ohms. This eliminates the need for matching elements or a transformer balun. For this reason, the antenna is offered without a balun, but an RF choke balun made of ferrites on coax should be used at the feedpoint terminal studs. With the coaxial cable directly connected to the driven element dipole, well over full legal limit power levels are possible. Like all InnovAntennas Yagis, the OP-DES 50MHz antennas are extremely robustly constructed; the larger model uses truss cables for the boom. All elements of the antenna use high quality aluminum, the clamps and screws are made of stainless steel. The supplied mast clamp is designed for masts up to 2 in. (50mm) diameter. Application Description Monoband Yagis are often used at contest stations, or when you want to use only one band for a certain time, for example to focus on a specific target during sunspot minimum. Another advantage of monoband antennas are the stacking possibilities, i.e. the arrangement of two or more identical antennas properly spaced from each other. InnovAntennas Yagis provide all the necessary technical specifications, so there is no guesswork about the stack spacing. The InnovAntennas OP-DES 50 MHz Yagis are designed through careful numerical optimizations to provide excellent gain with good bandwidth. As a result, a low SWR of 1.1:1 is achieved in the frequency range of 50.0 - 50.6 MHz (6-element) or 50.0 - 51.35 MHz (5-element). The experience of the developer Justin, G0KSC ensure superior operations with these antennas in practice, often supported by a lively exchange between users. TECHNICAL DATA InnovAntennas OP-DES 50 MHz Yagi (Monoband) Antenna Mast Mount: Center Antenna Type Directional Antenna Band 6m Power Handling: 5000 W Polarization: Horizontal Balun Included: No Mast Diameter Max.: 2.00 in. (50mm)
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$389.99
M2 Antennas 222-10EZ 222 MHz Yagi Antennas
M2 Antennas 222-10EZ 222 MHz Yagi Antennas are used by operators who want more than a basic beam antenna. Featuring a balanced, top-of-the-line feeder matching system, these 10 element antennas handle full legal limit and deliver weak-signal or distant repeater and simplex performance that is far beyond the capabilities of small end-mount beams or base station verticals. M2 Antennas 222-10EZ are, as their name implies, easily assembled. Built on very easy to handle and turn 10 ft. booms, these medium-sized, computer designed Yagis cover 222 to 226 MHz with flat gain and low SWR. Strong, yet lightweight and streamlined, they complement any VHF system. The heart of each 222-10EZ is their unique Driven Element Module, offering a balanced feeder for excellent pattern. Superior weather resistance and power handling abilities are achieved with all connectors that are O-ring sealed to the CNC machined block and internal connections are sealed in a space-age silicone gel with a dielectric strength nearly 4 times greater than air. The coaxial cable balun connectors are triple sealed. Other key mechanical and electrical parts are CNC machined from 6061-T6 aluminum and all hardware except the U-bolts is stainless steel. These balanced feeder beams are suitable for operations into distant FM repeaters or on simplex when mounted vertically, as shown, on a fiberglass mast. For weak-signal work on SSB, CW and digital modes, this beam may be mounted horizontally on a metal mast. In either case, since M2 Antennas 222-10EZ 222 MHz Yagi Antennas have very clean patterns, they are perfect for stacking vertically or horizontally, to bring your 1.25 meter band operations to a new level. Get all of your VHF/UHF antenna system components right here at DX Engineering.
Not Yet Reviewed
$373.99
InnovAntennas 144 MHz OWL Ultra Yagi Antennas
InnovAntennas 144 MHz OWL Ultra Yagi Antennas offer the 2 meter weak-signal enthusiast undeniable low-noise performance with amazing SWR bandwidth, particularly good gain and an excellent front-to-back ratio. Five Optimized Wideband Low-impedance (OWL) Ultra Yagi antennas are available, starting with six element up through ten element models. InnovAntennas' OWL Ultra Yagi beams have been extensively numerically simulated and optimized using special software that includes a 3D simulation of the boom, the insulators, the connector and the cable; an elaborate numerical simulation of these antennas that was inconceivable a decade before. InnovAntenna has achieved the best of what is technically possible for a wideband 2 meter Yagi. The boom of the 144 MHz OWL Ultra Yagi is 1 in. (25mm) square aluminum featuring through-the-boom insulated elements. The adjustable center fed folded dipole has the side opposite the 50 ohm feedpoint connected to the boom, which removes static charge to protect the transceiver. This antenna acts like a band-pass and noise filter outside the 2 meter band, due to rapidly rising impedance. However, the most important feature of OWL Ultra Yagi antenna is optimization for reduced side lobe in the elevation plane, achieving dramatically reduced received noise, even in high ambient noise city locations. The InnovAntennas OWL Ultra Yagis are suitable for all "weak signal modes" on the low end of the 2 meter band due to the optimization for high gain with incredibly low noise for EME, Meteor Scatter, Tropo-DX, Sporadic-E, etc. Despite the robust construction (the antennas can withstand wind speeds of up to 100 mph (160 km/h), the Yagis are still relatively light and thus suitable for smaller masts or for stacking several antennas. The OWL Ultra Yagis do not include a balun, as the coaxial cable connects directly to the loop driven element dipole. The antenna can handle 5 kW, but the recommended choke balun handles a maximum power of approx. 1.0 to 1.5 kW is possible. Exceptionally good SWR is achieved over a wide frequency range. With excellent gain to noise ratios (G/T ratio), the economical InnovAntennas OWL Ultra Yagis are well suited for use in stacked arrays, for EME, satellite or terrestrial operations. Each model listing describes the key benefits of the OWL Ultra Yagi Antennas. Your antenna is a part of your receiver and arguably the most important part of your station. You have spent thousands on radio equipment; make sure you don't short-change your set-up by choosing anything other than an InnovAntennas OWL Ultra Yagi.
Not Yet Reviewed
$274.99
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$469.99