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4 Results Found For "Stack"
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 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 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
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