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9 Results Found For "noise"
DX Engineering NCC-2 Receive Antenna Phasing Systems
Imagine adjusting the controls to knock out strong interfering stations or noise—and then being able to copy and log that weak DX station. By successfully combining the right antennas with the advanced phasing capabilities of the NCC-2, this is the operating thrill that every radio enthusiast can enjoy, again and again! DX Engineering NCC-2 Receive Antenna Phasing Systems are variable phasing controllers that combine the 300 kHz- 30MHz received signals from one transmit antenna and one receive antenna, or from two dedicated receive antennas. Combining signals from two stationary antennas physically spaced 1/10 to 1/2 wavelength apart creates an array pattern with signal peaks and dips called nulls. Adjusting the NCC-2 Phase and Balance controls have the effect of electronically rotating or steering that pattern. Steering the null direction to significantly weaken a local or distant interfering signal or noise is known as "Noise Cancelling." This "Noise Cancelling Controller" (NCC-2) can dramatically enhance the reception of weak signals from non-null directions. This "reverse-beam" capability on radio frequencies AM Broadcast through HF can provide amazing benefits for many types of AM DX and SWL receiving and ham radio operating. Work new DX, hear the weak station in casual regional conversations, snag the rare multiplier in contests and hear beyond the noise and interference in dire circumstances. DX Engineering NCC-2 Phasing Systems now feature the built-in RTR Receive-Transmit Interface relay system that expands the exciting benefits of antenna phasing for interference reduction in two ways: * First, the NCC-2 can combine signals from the HF transmit antenna and a separate receive antenna to effectively notch-out strong stations or noise. Almost any Amateur can now enjoy the benefits of antenna phasing and noise-nulling, even those with space limitations for separating the receiving and transmitting antennas. * Second, the user of any standard HF transceiver that lacks a separate receive antenna input can have enhanced reception of noise and signal nulling with the DXE-NCC-2 and two antennas. Rear panel SO-239, F and BNC connectors make the NCC-2 extremely versatile and easy to connect to almost any receiver or HF transceiver up to 200 watts. Redesigned with plug-in modular circuit board sockets, the NCC-2 includes one switched and powered internal slot and two passive internal slots per channel to accommodate these new options: * DXE-RPA-2-PM Receive Preamplifier Plug-In Modules (powered): one per channel for low-signal passive antennas with poor ground conditions * DXE-RG5000HD-PM Receiver Guard 5000HD Plug-In Module (passive): Front-end protection for the NCC-2 and the receiver * DXE-IT-PM 75 to 50 ohm Impedance Transformer Plug-In Module (passive): to match 75 ohm RX ANT feedlines to NCC-2 50 ohm internal impedance * NCC-2 Receive Filter Sets (passive, non-switchable): High Pass, Band Pass and Low Pass Filters for 160, 80, 40 meters typically in stock, with other band filters available individually by special order. DX Engineering NCC-2 Receive Antenna Phasing Systems offer these new additional benefits: * Multi-Color Status Indicating LEDs for Power, RTR Mode and Preamp Power CH A and CH B * New Radio Key Line Input with RX Enable Output-RTR Failsafe to prevent RF damage to NCC-2 and RX equipment * New ACC Key Line Output RCA female 'ground on transmit' pass-through for Amplifier or Accessory * New screw-on 2.1mm DC connector to prevent accidental power cable pull-out * Operates on +13.8VDC @ 2A input to power the NCC-2 and internally jumper set Bias Tee on each RX ANT ports for coax fed Active Verticals and other accessories. Offering new and experienced radio enthusiasts the next level of reception enhancements, DX Engineering model NCC-2 Receive Antenna Phasing Systems in use around the world!
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$955.99
DX Engineering RF-PRO-1B® Active Magnetic Loop Antennas
New Name...Same Antenna! DX Engineering RF-PRO-1B® Active Magnetic Loop Antennas are designed for low-noise reception of signals within the frequency range of 100-kHz to 30-MHz. Their integral, extra-high dynamic range, low-noise preamplifier is designed for minimum intermodulation distortion in the presence of very high-level signals that would normally overload most preamplifiers. Read more about the exclusive Clifton Laboratories design of the loop's RF-30 preamplifier by clicking "More Details" below. RF-PRO-1B Active Magnetic Loop Antennas, formerly known as the "Pixel Loop" and recently as InLogis, are now manufactured and serviced by DX Engineering. For Amateur Radio operators, AM DXers and Short-Wave Listeners, these active loop antennas are a great way to extend your listening ability. Add DX Engineering RF-PRO-1B® Active Magnetic Loop Antennas to your radios and start hearing more signals with less noise! Note: Whenever the DX Engineering "Documentation" tab is available, please look at the associated files for additional product information.
( 26 )
$809.99
DX Engineering TFS4 Series B Transmit Four Square Systems
DX Engineering TFS4 Series B Transmit Four-Square Systems bring together the highest level of engineering excellence with the practical realities of operator convenience and ease of installation. These four-square hybrid systems are available in versions for the 160, 80, and 40 meter bands. They can be easily dropped into your quarter-wave spaced vertical 4-antenna array to provide optimum directional control. They allow the operator to receive or transmit with 5.5 dB gain in any one of four directions with a 20+ dB front-to-back ratio for interference reduction from unwanted directions. You can also switch to a single Omni-directional pattern with a push of a single button. This combination permits you to listen "all-around," unhindered by pattern nulls, and then select the best direction for signal reception and noise rejection. TFS4 Series B Transmit Four Square Systems are designed for use with four monoband vertical antennas placed at the corners of a square that is one-quarter wavelength on a side. The vertical element must be ungrounded and resonant in the desired band, and should be directly base-fed by the coaxial cable phasing lines from the centrally located controller (shunt-fed towers or radiating elements cannot be used). DX Engineering has several vertical antennas that are well suited for this application. Above all, a properly designed and installed radial system is necessary for top antenna performance, whether it's a single vertical or a full array. DX Engineering strongly recommends our optional Q75- series quarter wavelength cables constructed from our own high quality DXE-11U coax. It features a waterproof PE jacket, foam dielectric and has a velocity factor of 82 percent. These cables are electronically pruned to a precise electrical length derived from your choice of center operating frequency, terminated with hand-soldered silver-PTFE PL-259 connectors and weather-sealed with shrinkable tubing. Finally, each cable is tested for high voltage breakdown for maximum reliability and power handling. Since the transmit power is divided by the controller, the coaxial cable can handle QRO power with ease. If you already have a four-square array with a hybrid controller and would like to upgrade to improved performance and the Omni feature, the DX Engineering TFS4 Series B Transmit Four Square Systems are a direct transplant. BCD logic switching allows for the use of a 4-wire control cable to perform the necessary switching functions when powered by the included control console. Features: * Classic hybrid design is easy to install * Four directions plus Omni for versatile operation * 5 kW CW power rating for high reliability * Hot switching lock-out to disable amplifier while switching * Drop-in replacement for COMTEK systems * Proven DX Engineering RF relays for high performance * RF Shielded, high impact thermoplastic cover offers unique protection * Relays cycle during Power-On to ensure clean contacts Note: Whenever the DX Engineering "Documentation" tab is available, please look at the associated files for additional product information. Four-square systems work great! DX Engineering TFS4 Series B Transmit Four-Square Systems provide the heart of a modern phased array.
Not Yet Reviewed
$807.98
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$831.98
DX Engineering 450 Ohm Ladder Line
DX Engineering 450 Ohm Ladder Line is a transmitting grade low-loss parallel-wire RF feedline featuring a strong, waterproof, UV black polyethylene insulation. To maintain the wire spacing between the conductors while reducing losses, the integral flat plastic material alternates with rectangular openings, which explains the "Window Line" nickname. Capable of handling over 3 kW of RF power, DXE-LL450 is a very low-loss transmission line across HF. It is ideal for exceptionally long feedline runs and for low band wire antennas operated on multiple bands on which the feedpoint impedance can vary significantly, causing mismatch and elevated SWR. Unlike coaxial cables, DX Engineering DXE-LL450 Ladder Line maintains low RF losses at frequencies where antenna feedpoint impedance mismatches cause high SWR. It can provide significantly higher efficiency than coaxial cable when feeding non-resonant antenna systems that are matched with a wide impedance range antenna tuner. DXE-LL450 450 Ohm Ladder Line is a high-quality flat RF feedline, about 0.938 in. wide (15/16") with two 16-gauge copper-clad steel wire conductors (29 AWG x 19 strands) that provide the strength to hold up for long spans between supports without twisting. It exhibits a nominal impedance of around 400 Ohms and a nominal Velocity Factor of 91 percent. For proper performance, LL450 Ladder Line must be installed suspended through the air supported by insulators every 25 ft. or less, kept at right angles and several inches away from other wires, and at least one foot away when run parallel to the earth or large metal surfaces. Installing with an axial twist of one turn per 10 ft. can reduce wind, rain and ice loading, RF coupling and RF noise. DXE-LL450 can be mounted with insulators and suspended on metal or wood posts or run along a wood fence line, only if the fence has no wires or metal mesh that couples RF noise or unbalances the feedline. Often used for non-resonant wire doublet antennas, DXE-LL450 can be more easily terminated outdoors to a DXE-MC20-C4-1 4:1 Balun or a DXE-MC20-1-1T 1:1 Balun. Then, with no inline switches or relays, directly connect the antenna system to a typical indoor wide range antenna tuner using a solid dielectric coax, not foam dielectric, to handle high voltage at high SWR. DXE-213U or DXE-214 Coaxial Cable Assemblies 12 or 18 ft. with PL-259s are perfect for this method, which eliminates the need for a special balanced tuner, and avoids the losses and detuning effects caused by unbalancing when ladder line is routed indoors near wires and ducts. DXE-LL450 is sold by the foot, previously sold as DXE-LL450-CTL, this is the same ladder line with a new part number. It is also available in spools of 500 ft. DXE-LL450-5C and 1,000 ft. DXE-LL450-1K, which are specified for DX Engineering Reversible Beverage System Antennas. NOTE: This type of feedline is intended for MF and HF use and is not suitable for use above 54 MHz. Also consider DX Engineering 300 Ohm Ladder Line, DXE-LL300, an excellent alternative low-loss HF feed line that reduces impedance extremes on non-resonant HF multiband antenna systems.
( 63 )
$792.99
DX Engineering Receive Short Element Active Vertical Antennas
DX Engineering Receive Short Element Active Vertical Antennas (the RSEAV Antennas) offer excellent low noise radio frequency reception from 40 kHz to 30 MHz. Better receiving performance than full-size transmit antennas and other active makes the DXE-RSEAV-1 the best choice on the market for VLF through HF reception, including long-distance AM broadcast, Medium Wave and Shortwave (SWL), and new low-frequency Amateur bands, DXing, contesting, and everyday HF operations. Click on a listed product title and Scroll Down to see additional important information. A complete product description appears below the Specifications Overview. Instruction manual links appear in the Documentation section. The sleek and stealthy DXE-RSEAV-1 includes a high-quality three-section 8.5 ft. (2.6m) aluminum tubing whip, insulated mounting plate and the completely new DXE-AVA-3 Active Matching Unit. Its state-of-the-art broadband operational amplifier design works as a high-impedance buffer between the short antenna element and RG6U 75-ohm coax. When installed in the appropriate location, RSEAV antennas provide significantly better weak signal reception than other active receive antennas and full-size transmit-capable antennas, with substantially reduced noise and lower spurious signal interference. Receive Short Element Active Vertical Antennas are intended to be mounted on a ground rod at ground level in a clear area away from all metal, towers and other antennas. They are sold individually (DXE-RSEAV-1), or with a bias tee (DXE-RSEAV-1FVI) and DXE-RSEAV-1 Receive Short Element Active Verticals set a new standard for "Active Receive Vertical Antennas" replacing legacy DXE-ARAV-3, ARAV-2, ARAV-1 and AL-24 versions. Use multiple DXE-RSEAV-1 for all 4 and 8 element DX Engineering Receive Arrays – all 3, 4 and 8 element Hi-Z Antennas Arrays – and 2 element receive arrays with DXE-NCC-2 and NCC-1 Variable Phasing Controllers. The DXE-RSEAV-1 is designed to be a very low-gain, low-noise antenna for greatly improved signal-to-noise performance over a very wide range of frequencies. In a proper single or multi-element array installation, this Receive Vertical antenna will attenuate high-angle skywave signals, which is the goal for a low band DXing receive antenna. Low-angle, long-range DX signals are easier to copy with a good radio and DX Engineering Receive Short Element Active Vertical Antennas. Please Note: To achieve the expected reception pattern, multi-element phased arrays depend upon identical gain and phase response from each element. Every individual element amplifier, its grounding, and even its feedline characteristics and length, must be identical to the others in the array. Therefore, when unrepairable failures occur, it is essential to replace or upgrade all the elements in the array with identical, fully compatible DXE-RSEAV-1 antennas or DXE-AVA-3 units.
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$999.96
DX Engineering Receive Eight Circle Array Controller and Switch Package
DX Engineering Receive Eight Circle Controller and Switch Package, DXE-RCA8C-SYS-2P, is for the array builder who wants to use their own passive receive verticals for a mono-band receive array. The DX Engineering Eight Circle Array will dramatically improve reception of weak distant signals with unparalleled rejection of extraneous signals and noise. This eight-direction switchable array uses a special end-fire/broadside combination of eight short receiving vertical elements. The resulting narrow directional receiving pattern is superior to standard or short Beverage antennas, Reversible Beverage systems and typical two, three or four element arrays. Receive arrays of short vertical elements limit signal and noise for dramatically superior weak signal reception as compared to full size transmitting antennas and arrays. With proper spacing of eight vertical elements, the Receive Eight Circle Array is the ultimate high performance, directional receive antenna for HF Amateur, SWL or AM DXing. DX Engineering Receive Eight Circle Arrays offer directional performance comparable to eight very long phased Beverages, using far less land area. These packages are designed to be used with eight identical, user-supplied, active or passive symmetrically-spaced vertical elements to provide switching for an 8-direction receiving antenna system. Passive elements will generally provide you with a monoband receiving system. With a DX Engineering Active Vertical package you can achieve excellent directional receiving performance over three bands. Click "More Details" below for additional information, features and specifications. The "Documentation" link contains manuals and associated files for complete product installation information. Build an exceptionally effective, electronically rotatable, stationary receive antenna that lets you hear the DX that cannot be heard on a transmit antenna. Dig the weak signals out of the noise with an antenna that can help make your station one of the best. Order the DX Engineering Receive Eight Circle Controller and Switch Package.
Not Yet Reviewed
$815.98
DX Engineering 5BTV 5-Band High Performance HF Vertical Antennas and OMNI-TILT® Mounting Systems
DX Engineering 5BTV 5-Band High Performance HF Vertical Antennas and OMNI-TILT® Mounting Systems are convenient and economical antenna installation packages that combine the time-tested Hustler antenna with our radial plate and our innovative tilt system! This can be your high performance HF ground mounted vertical antenna system. This DX Engineering Hustler 5BTV Package provides 80, 40, 20, 15, and 10 meter band operation with: -- Dramatically improved transmit and receive signals -- Best possible signal pattern and performance boost with organized radial wire attachment system -- Simplified and long-lasting RF connections with proper connectors and cable -- Safe and easy tuning with our OMNI-TILT® mount - one person can walk the antenna up or down -- Professional grade stainless steel clamps and mounting hardware Included with each antenna package is our exclusive High Performance Hustler BTV Assembly and Installation Guide that will answer all your questions! You can read more right here, including the best way to install your vertical antenna system, the reasons for installing a radial system, and how to "Install Radial Wires Without Digging". Click "More Detail" below and then click the "Documentation" link. "More Details" includes the list of items included in this fantastic package. Make contacts beyond expectations! Operate with a versatile HF multi-band vertical antenna that performs to its full potential. Install a DX Engineering 5BTV 5-Band High Performance HF Vertical Antenna and OMNI-TILT® Mounting System.
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$849.68
DX Engineering 6BTV 6-Band High Performance HF Vertical Antennas and OMNI-TILT® Mounting Systems
DX Engineering 6BTV 6-Band High Performance HF Vertical Antennas and OMNI-TILT® Mounting Systems are convenient and economical antenna installation packages that combine the time-tested Hustler antenna with our radial plate and our innovative tilt system! This can be your high performance HF ground mounted vertical antenna system. This DX Engineering Hustler 6BTV Package provides 80, 40, 30, 20, 15, and 10 meter band operation with: -- Dramatically improved transmit and receive signals -- Best possible signal pattern and performance boost with organized radial wire attachment system -- Simplified and long-lasting RF connections with proper connectors and cable -- Safe and easy tuning with our OMNI-TILT® mount - one person can walk the antenna up or down -- Professional grade stainless steel clamps and mounting hardware Included with each antenna package is our exclusive High Performance Hustler BTV Assembly and Installation Guide that will answer all your questions! You can read more right here, including the best way to install your vertical antenna system, the reasons for installing a radial system, and how to "Install Radial Wires Without Digging". Click "More Detail" below and then click the "Documentation" link. "More Details" includes the list of items included in this fantastic package. Make contacts beyond expectations! Operate with a versatile HF multi-band vertical antenna that performs to its full potential. Install a DX Engineering 6BTV 6-Band High Performance HF Vertical Antenna and OMNI-TILT® Mounting System.
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$889.68
DX Engineering 4BTV 4-Band High Performance HF Vertical Antennas and OMNI-TILT® Mounting Systems
DX Engineering 4BTV 4-Band High Performance HF Vertical Antennas and OMNI-TILT® Mounting Systems are convenient and economical antenna installation packages that combine the time-tested Hustler antenna with our radial plate and our innovative tilt system! This can be your high performance HF ground mounted vertical antenna system. This DX Engineering Hustler 4BTV Package provides 40, 20, 15, and 10 meter band operation with: -- Dramatically improved transmit and receive signals -- Best possible signal pattern and performance boost with organized radial wire attachment system -- Simplified and long-lasting RF connections with proper connectors and cable -- Safe and easy tuning with our OMNI-TILT® mount - one person can walk the antenna up or down -- Professional grade stainless steel clamps and mounting hardware Included with each antenna package is our exclusive High Performance Hustler BTV Assembly and Installation Guide that will answer all your questions! You can read more right here, including the best way to install your vertical antenna system, the reasons for installing a radial system, and how to "Install Radial Wires Without Digging". Click "More Detail" below and then click the "Documentation" link. "More Details" includes the list of items included in this fantastic package. Make contacts beyond expectations! Operate with a versatile HF multi-band vertical antenna that performs to its full potential. Install a DX Engineering 4BTV 4-Band High Performance HF Vertical Antenna and OMNI-TILT® Mounting System.
( 3 )
$759.68