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18 Results Found For "noise"
DX Engineering AVA-3 Active Matching Units
DX Engineering AVA-3 Active Matching Units are state-of-the-art broadband receive RF operational amplifiers that achieve unparalleled weak signal reception across the radio frequency range from 40 kHz* to 30 MHz. They work as a high impedance buffer between a short antenna element of 6 to 24 feet and an economical 75 ohm feedline. The AVA-3 and a short element are intended to be mounted on a ground rod at ground level in a clear area away from all metal, towers and other antennas. The gain adjustable AVA-3 is the sole upgrade and drop-in replacement for all discontinued receive array element amplifiers including Hi-Z Antennas AMP, PLUS6-AMP, AMP-V2 and AMP-PLUS-V2 as well as DXE-AVA-2 and AVA-1. The DXE-AVA-3 Active Matching Unit is the heart of the new line of DX Engineering Receive Short Element Active Vertical Antennas, DXE-RSEAV-1. Compared to large antennas, this amplified short element method dramatically improves signal-to-noise performance for excellent VLF, LF and HF weak signal reception. Click or tap the title of the listed item for an overview - a complete description, Specifications, Required and Suggested Parts. Links to instruction manuals and charts appear in Documentation. The AVA-3 Active Matching Unit provides these features and benefits: • Ultimate frequency coverage of 40 kHz* to 30 MHz for VLF through HF (including the 2200m and 630m Amateur bands) • High Third Order Intercept (TOI) Performance +39dBm for superior strong signal handling equal to top transceivers • Consistent unit to unit gain for greatly improved array performance • Virtually Flat Gain (+/-0.4 dBm) across the entire frequency range • Internally settable gain (default -6, 0, or +6 dBm) for different ambient noise locations and element sizes • Direct DC via second F connector – internal settable choice for separate DC and RF coaxial cables for best performance, or standard Bias Tee DC on the RF coax • Each DXE-AVA-3 Active Matching Unit operates on 12 -15 VDC at 25mA • Element is grounded when power is removed • 75 ohm F connectors support field serviceable RG-6 Quad Shield suitable up to 1,000 feet for VLF through HF *Frequency coverage below 200 kHz requires Direct DC on a separate DC only coaxial cable. 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 and upgrade all the element amplifiers in the array with fully compatible DXE-AVA-3 units.
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$139.99
DX Engineering Portable Receive Preamplifier-Attenuator
DX Engineering Portable Receive Preamplifier-Attenuator DXE-NL-PRE-ATT-1 – A very handy device to use with your receiver; handheld, portable or base. This attractive, light-weight unit comes completely assembled and tested, and provides a nominal 30 dB gain across the frequency range from 100 kHz through 30 MHz. Powered by an internal 9 volt battery (not included), it features BNC connectors for RF Input and Output, easy to use slide switches and a 'power on' LED when the preamp is on. Attenuation is selected with switches for -10 dB or -20 dB and -30 dB with both. Plus, an AM Broadcast Band Rejection Filter can be switched in or out, as needed. This unit measures 3.25 x 7.00 x 1.00 in. (WHD) and weighs approx. 8.5 oz. with the user supplied 9V battery installed. This preamplifier has a Noise Figure (NF) of 4.5 dB. This Portable Preamplifier-Attenuator is a perfect companion device for use with the DXE-NOISELOOP WD8DSB Portable Receive Flag Antenna Kit, for RFI noise finding and for MW through SW receiving. NOTE: The DXE-NL-PRE-ATT-1 Portable Receive Preamplifier-Attenuator is a Receive Only device. Attempting to transmit RF into this unit will cause damage that is not covered by warranty.
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$175.99
DX Engineering NOISELOOP Portable Receive Flag Antenna Kit
DX Engineering NOISELOOP Portable Receive Flag Antenna Kit is based on the design by Don Kirk, WD8DSB. Don's article on this antenna is published in the March 2021 issue of QST Magazine (used by permission). The DXE-NOISELOOP is a kit of parts to build this receive-only portable directional HF loop antenna, which measures only 48 by 24 inches plus 36 inches of mast-handle. It may be used while walking or stationary with your portable HF receiver. Oriented vertically, this loop antenna features a cardioid pattern at the horizon with a deep null of up to 30 dB rejection. It is an excellent tool for locating noise sources from 1.8 through 30 MHz and for low-noise, general coverage reception from the AM broadcast band through 30 MHz. An optional Preamplifier-Attenuator Unit, DXE-NL-PRE-ATT-1, may be attached to the loop mast handle for enhanced operations. An IC-705, a portable SW or a handheld HF receiver are excellent choices for searching for local noise sources with the NOISELOOP, around the neighborhood and even around your own home. This Portable Flag Antenna Kit includes everything needed to make the antenna: fiberglass tubing for the frame and handle, mounting plate, separate PC boards for the bifilar wound transformer and load resistor, antenna wire, coaxial cable with male BNC and stainless steel hardware. Simple hand tools and a solder iron are required for assembly. Included instructions detail assembly. This kit will typically take between 1 and 2 hours to build. The WD8DSB Portable Flag Antenna design has become a real game changer in direction finding of RFI on MF and HF frequencies, and you will also find it an invaluable tool when hunting RFI due to the following key features. *Unidirectional (unlike a tuned loop) *Broadband (unlike a tuned loop, excellent for AM DXing, SWL and Amateur) *Portable (easy to walk with while directional noise finding or HF Fox Hunting) Traditionally Flag antennas are large and designed for stationary use, but the idea for this antenna was to design a Portable Flag. It was designed to be the largest possible (to maximize gain) that would fit inside a car and it's still small enough to maintain a cardioid pattern up through 30 MHz. The portable Flag has an approximate dimension of 2 feet tall by 4 feet long which you (or a helper) can easily walk with while tracking down a signal. Unlike a tuned loop, the Portable Flag is a broadband antenna with unidirectional properties, and it's designed for direction finding from 1.8 to 30 MHz as long as an appropriate preamp is used. It's even useful for direction finding down in the AM broadcast band. The rear of the antenna produces a sharp null when pointed at the signal of interest and the sharp null is often used for direction finding versus using the broad peak which occurs when the front of the antenna is pointed at the signal of interest. Learn more about how to build this antenna kit by clicking on More Detail and the Documentation link for the Instruction Manual. Order your DX Engineering NOISELOOP Portable Receive Flag Antenna Kit here.
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$159.99
DX Engineering Receiver Guard Electronic RF Limiters
DX Engineering Receiver Guard RG5000HD Electronic RF Limiters are the best choice of inline devices to protect your receiver antenna inputs. The Receiver Guard is a receive antenna input limiter specifically designed to protect a sensitive receiver front-end against high levels of RF and potential damage. At the heart of each Receiver Guard is a highly effective electronic RF limiter covering 500 kHz to 150 MHz with an insertion loss under 0.15 dB up to 50 MHz and under 0.30 dB up to 150 MHz. The multi-stage design includes a gas discharge tube for maximum pulse energy protection. The DXE-RG5000HD rejects 10 watts of catastrophic receive antenna feedline RF while passing a maximum signal of about 87 dB over S-9, which is only 25 mw, a signal level that is well below the point of front end damage. Receiver Guards are a must for multiple radio contesting stations and they provide low-cost front-end "insurance." Use them in these common high-RF situations: - Receive antennas in very close proximity to transmit antennas - Field-day operations with many transmitters in close range - Multi-transmitter contesting sites - Neighboring Amateur and CB operators - Frequent high-power mobile encounters Extensively tested and proven in real-world stations, the Receiver Guard works for all radios and offers the ultimate performance required by the upper tier of transceivers tested to have the best narrow-spaced third-order dynamic range or published RMDR (Reciprocal Mixing Dynamic Range). These are passive electronic limiters, so competitive contesting stations use separate band filters in addition to the Receiver Guard. When there are high levels of RF on your receive antennas, the DX Engineering Receiver Guard generates far less harmonic noise than other limiters on the market, which allows your station to continue to operate safely and competitively. At normal HF signal levels the RG5000HD operates continuously with no effect on the performance of your station while providing the best possible protection for your radio. Here are key Receiver Guard features: * Keeps stray high levels of RF from damaging your receiver input * Ideal for separate 160 and/or 80 meter receive systems with large pulse and RF energy capture area * Uses state of the art components for maximum protection of receivers * Under 6 ns response time * Multi-Stage protection * Very low insertion loss * Uses BNC type connectors to avoid accidental connection to a transmit feedline * Has been developed and tested in world-recognized multi-multi contest station K3LR Specifications - DX Engineering Receiver Guard model DXE-RG-5000HD - Frequency Range: 0.5 through 150 MHz - Insertion Loss: < 0.15 dB up to 50 MHz, < 0.3 dB 50 MHz up to 150 MHz - VSWR: < 1.2:1 - Maximum Output Level at 10 W input: +14 dBm (0.025 W) - Maximum Power Handling: 10 W CCS (Continuous Commercial Service) - Device Impedance: 50 to 75 ohms, unbalanced - Connectors, Input and Output: BNC female Note: Whenever the DX Engineering "Documentation" tab is available, please look at the associated files for additional product information. What happens if the receive antenna is extremely close to the transmit antenna, or there is an antenna support or other system failure that causes a high RF level to enter the receive antenna input? A DX Engineering Receiver Guard can save the day! Order yours now.
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$119.99
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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$249.99
DX Engineering RG-400 High Isolation Coaxial Cable Assemblies
DX Engineering RG-400 High Isolation Coaxial Cable Assemblies bring to your RF systems the same quality and capabilities that are demanded of military and aerospace installations. Here are few reasons why we offer these advanced RG-400 cables for your critical applications: - Extremely high isolation from noise and signals from adjacent cables - Very high power handling - 2.75 kW at 30 MHz - Stranded silver plated copper center conductor for extreme efficiency - PTFE dielectric for exceptional dimensional stability, low loss and very high power handling - Silver plated copper braided double shields for very high isolation - Tough, waterproof fluorinated ethylene propylene (FEP) - MIL-C-17 jacket DX Engineering RG-400 cable assemblies are terminated with the classic silver plated Amphenol 831SP PL-259 and UG-175 reducers or BNC Male connectors. DXE-RG400 is specifically recommended for short length cable assembly use in VHF/UHF duplex repeater applications. RG-400 may be the same size as RG-58A/U, but it is an aerospace-level performance cable with dramatically improved ratings in all categories. NOTE: RG-400 is a 0.195 in. diameter cable. RG-400 is NOT related in any way to DXE-400MAX or LMR-400 cables which are 0.405 in. diameter. Order DX Engineering RG-400 High Isolation Coaxial Cable Assemblies here.
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$101.99
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$141.99
DX Engineering Ferrite
DX Engineering Ferrites are partially magnetic metal and ceramic mixes available in a variety of forms, including toroid core, bead type and plastic-covered split-bead ferrite called snap-beads. They are used in a myriad of RF suppression applications to mitigate RFI (radio frequency interference) as well as to reduce pulse and other types of RF noise interference. Special ferrites are used for experimentation and electronic circuit building and for making transformers, RF chokes and antenna baluns. The variations of magnetic and non-magnetic metals and non-metal ceramics used to make ferrites are called "Mixes" and each has different radio frequency properties or ranges. Therefore, different mix number ferrites are typically used for different applications within those ranges, determined by decades of experiments by engineers and applications by hams. Each Mix has been assigned a color code to help identify the ferrite, so numerical labeling is not used on the metal. Color coded ferrite can be identified long after the numbered package is discarded or has disintegrated with time. How do they work? Simply use snap-on beads on a cable or wire. An even more effective choke takes a few to several turns of a wire or cable through and around a ferrite snap-on bead or toroid core. This mitigates RFI to, or from, the connected RF noise producing or noise affected electronic device. The results can be very surprising. Solving noise and RFI can be frustrating. Due to the nature of RF and noise interference suppression; the techniques of appropriate use of ferrites can take a bit of trial and error, but are often the best solution for a difficult problem. Use DX Engineering Ferrite for an incredible range of electronic circuits, noise abatement and RF suppression projects. The details of DX Engineering Ferrite mixes and types appear in each product description. Sizes and applications are discussed in "More Details" and in the literature available at the "Documentation" tab of each of these products.
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$106.99
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$116.99
DX Engineering Maxi-Core® 20 Feedline Choke and Mount Kits
DX Engineering Maxi-Core® 20 Feedline Choke and Mount Kits, DXE-MC20-FCM, provide current balance and feedline isolation on coaxial cables for all types of HF through 6 meter antennas including verticals, rotatable dipoles, directional beams and Yagi antennas. Intended for 50 ohm feedlines operated at low SWR, this combination of mounting plate bracket and effective 50 ohm RF choke handles full-legal-power-plus and provides higher common mode impedance (CMI) across a greater frequency range than competing feedline choke and line isolators and previous DX Engineering and Comtek models. High CMI across the AM Broadcast band and the HF/6M spectrum is essential to provide sufficient suppression of unwanted transmitted and received RFI/BCI current on the feedline shield exterior. With less noise and interference you will hear and be heard using a DX Engineering Maxi-Core® 20 Feedline Choke and Mount Kits. DX Engineering Maxi-Core® 20 Feedline Choke and Mount Kits bring new parts together to work on many types of antennas. They provide improved RF isolation and current balance at either end of the feedline and at the feedpoint of a vertical, a beam, rotatable dipole or other antenna feedline. This is a unique perpendicular choke mount that allows a beneficial separation between the ferrite of the choke and the antenna boom or mast, resulting in improved choking performance compared to a choke mounted on metal. The UV black high-strength polymer mounting plate provides additional isolation and holes for different mounting positions for the choke, horizontal or vertical. Stainless steel hardware is included to attach the plate to the stainless steel mounting bracket, which has laser cut holes for one of five optional DX Engineering Saddle Clamps to cover mast or boom sizes from 1 to 2 in. and 2.375 to 3 in. Click "More Detail" for additional information and click Suggested Parts for required optional items including one saddle clamp to fit your mast or boom and coaxial cable assemblies. Maxi-Core® 20 Feedline Chokes features high quality silver-plated PTFE dielectric SO-239 (UHF female) connectors. The SO-239 connector limits power handling to 5 kW or less at low SWR and reduced power at elevated SWR. These feedline chokes exhibit very low insertion loss and inherently low SWR. They are built into a convenient weather resistant NEMA enclosure with weep holes at all four corners of the "bottom" side of the enclosure, to vent properly when mounted vertically or horizontally for all types of antennas. Make your antenna play to its potential; reduce RFI and improve reception with DX Engineering Maxi-Core® 20 Feedline Choke and Mount Kits.
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$207.98
DX Engineering Maxi-Core® 20 1:1 Balun and Mount Kits
DX Engineering Maxi-Core® 20 1:1 Balun and Mount Kits, DXE-MC20-1-1BM, provide current balance and feedline isolation for HF through 6 meter verticals, rotatable dipoles, directional beams and Yagi antennas. Intended for 50 ohm feedpoint antennas that offer low SWR, this combination of mounting plate bracket and effective 1:1 RF choke balun handles full-legal-power-plus and provides higher common mode impedance (CMI) across a greater frequency range than competing balun models and previous DX Engineering and Comtek models. Their high CMI across the AM Broadcast band and the HF/6M spectrum is essential to provide sufficient suppression of unwanted transmitted and received RFI/BCI current on the feedline shield exterior. With less noise and interference you will hear and be heard using a DX Engineering Maxi-Core® 20 1:1 Balun and Mount Kit. A similar kit was formerly known as the Vertical Feedline Current Choke. But, the Maxi-Core® 20 1:1 Balun and Mount Kit bring new parts together to work on many types of antennas. They provide improved RF isolation of the feedline and current balance at the feedpoint of a vertical, a beam or rotatable dipole. This is a unique perpendicular mount that allows a beneficial separation between the ferrite of the balun and the antenna boom or mast, resulting in improved choking performance compared to a balun mounted on metal. The UV black high-strength polymer mounting plate provides additional isolation and holes for different mounting positions for the balun, horizontal or vertical. Stainless steel hardware is included to attach the plate to the stainless steel mounting bracket, which has laser cut holes for one of five optional DX Engineering Saddle Clamps to cover mast or boom sizes from 1 to 2 in. and 2.375 to 3 in. Maxi-Core® 20 Baluns feature 1/4-20 stainless steel hardware and a high quality silver-plated PTFE dielectric SO-239 (UHF female) input connector. The SO-239 connector limits power handling to 5 kW or less at low SWR and reduced power at elevated SWR. These baluns exhibit very low insertion loss and inherently low SWR. Maxi-Core ® 20 Baluns are built into a convenient weather resistant NEMA enclosure with weep holes at all four corners of the "bottom" side of the enclosure, to vent properly when mounted vertically or horizontally for all types of antennas. Click "More Detail" for additional information and click Suggested Parts for optional items required, including one saddle clamp to fit your mast or boom, and a wiring kit or flexible copper strap to connect the balun to the antenna feedpoint terminals. Make your antenna play to its potential; reduce RFI and improve reception with DX Engineering Maxi-Core® 20 1:1 Balun and Mount Kits.
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$207.98
DX Engineering Phillystran Steel Tail Kits
DX Engineering Phillystran Steel Tail Kits provide the appropriate transition from non-metallic to metallic guying cable at the ground end of tower guying systems. Steel Tail Kits are available for Phillystran HPTG-4000I, -6700I and 11200I Guy Lines. What is the function of the steel tail? Here is the recommendation by Phillystran, the manufacturer of HPTG-I High Performance Tower Guy non-metallic guy lines: A steel tail is a length of EHS (Extra High Strength) steel guy line connecting the HPTG-I assemblies to the turnbuckle or guy anchor. The steel tail protects the HPTG-I assemblies from damage due to brush fires, lawn maintenance equipment or vandals. The steel tail length should be sufficient to get the bottom end of the HPTG-I assembly above arm's reach, or above brush tops (if located in a marsh or tall brush area). The HPTG-I should never pass through tree limbs or be allowed to rub against poles or trees. The steel tail allows for easier guy length calculations and serves as a guy tension monitoring point, as well as a safer area to attach guy grips during guy line installation and tensioning. Eliminating the hassle of buying a length of steel cable and obtaining a special tool to cut it, DX Engineering Phillystran Steel Tail Kits provide everything needed to isolate your tower's non-metallic guy cable from harm. Three different size kits are available for different tower guying requirements provided by Phillystran guy cables 4000I, 6700I and 11200I. Here are the items included in these innovative Steel Tail kits: - 12 ft. EHS steel guy line, Galvanized, in three kit sizes, 3/16 in., 1/4 in. or 5/16 in. - Porcelain Guy Line Strain Insulator, 502 or 504 depending upon kit size - Galvanized Steel Preform Dead End Big-Grips for EHS steel guy line, two per line - Heavy Duty Thimble, galvanized steel, appropriately sized for each kit - Cable Ties, UV protected Black, four, to secure installed Big-Grip ends Note: Phillystran guy line and Preform Dead End Big-Grips for Phillystran are not provided in this kit and must be ordered separately. DX Engineering Phillystran Steel Tail Kits provide Porcelain Guy Line Strain Insulators for the top end of the Steel Tail so that the galvanized steel Big-Grips for the Phillystran and for the EHS Steel Guy Lines do not touching and make RF noise. For three different size Phillystran guy line, HPTG-4000I, -6700I and -11200I, these kits are available exclusively from DX Engineering in 3-packs for each level of tower guying.
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$201.99
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$239.99
DX Engineering Tinned Copper Radial Wire
DX Engineering Tinned Copper Radial Wire is the same wire as used by the most successful contest stations and DX enthusiasts for their ground-mounted vertical antennas. This 16 AWG tinned solid copper wire is an extremely cost effective solution for the high-count, full-size ground radial wire systems that are required for top-performing HF vertical antenna installations. This is especially true for 4-element Four Square Array Systems, 3-element ProStack Arrays, and 2-element Dual Vertical Arrays. Why is this wire the absolute best choice for any ground-mounted vertical antenna? Because, DX Engineering Tinned Copper Radial Wire will last much longer in a variety of soil conditions as compared to bare copper, copper coated steel and aluminum wires. Unfortunately, radials deployed with those other wire types actually corrode and degrade rather quickly, but do so slowly enough that the operator may not easily perceive that degradation in terms of antenna system performance. Full radial system integrity is maintained for a much greater number of years with tinned copper wire. Depending upon soil type, installations with DXE-TCRW16 will maintain vertical antenna performance for many, many years… and even decades. DXE-TCRW16 is available in small, easy to handle spools in lengths of 500 feet (DXE-TCRW16-500), 1,000 feet (DXE-TCRW-1000), 2,500 feet (DXE-TCRW16-2500) and 5,000 feet (DXE-TCRW16-5000). NOTE: To prevent accelerated corrosion and the possibility of noise, do not use metal anchor pins (lawn staples) on Tinned Copper Radial Wire. Use only DXE-STPL-100BD Biodegradable Anchor Pins to hold down bare wire radials. DX Engineering Tinned Copper Radial Wire is the right choice for long lasting top-performance radial systems for your ground-mounted vertical antenna system.
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$209.99
DX Engineering NCC-2 Receive Filter Sets
DX Engineering NCC-2 Receive Filter Sets provide an added dimension to the receive capabilities of the NCC-2 Receive Antenna Phasing System. These advanced plug-in filter module and adapter board pairs offer frequency-specific receive enhancements. The packages are available in pairs of high pass, band pass, and low pass frequency ranges with filter cut-off and center frequencies that correspond to the major Amateur low bands, 160, 80, 40 meters. Filter insertion loss is only about 1 dB. NCC-2 Receive Filter Sets are pairs of the original NCC-1 filters of the same type, each with the required RXFL-1 Filter Adapter. Both NCC-2 channels, "CH A RX ANT IN" and "CH B RX ANT IN" will benefit from the same pass-band characteristics. High pass, band pass, or low pass filter sets are available for users to choose and install into their NCC-2 for their desired application. By reducing or excluding frequency-specific interfering noise and signals, the noise floor of the desired passband can be dramatically lowered for greatly improved reception. Be aware that when filter pairs are installed, the NCC-2 no longer responds to signals out of the passband. In other words, at this time there is no electronically switched bypass for installed filters. Note: Whenever the DX Engineering "Documentation" tab is available, please look at the associated files for additional product information. The NCC-2 Receive Filters displayed here, and higher frequency band filters, are also available as single filters for the NCC-2, to create alternative wide-pass filter sets, and for DX Engineering single channel accessories, including the DXE-RPA-2, DXE-DMC-2 and the DXE RTR-2. The simplest way to filter your NCC-2 is to order one of these DX Engineering Receive Filter Sets for your unit and enjoy the best possible filtered performance from your DX Engineering NCC-2 Receive Antenna Phasing System.
Not Yet Reviewed
$106.96
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$238.96
DX Engineering NCC-1 Receive Filter Sets
DX Engineering announces a series of NCC-1 Receive Filter Sets, a breakthrough option for owners of the NCC-1 Receive Antenna Phasing Unit. These advanced plug-in filter module sets offer frequency-specific receive antenna system enhancements for the NCC-1. All filter modules sets are available in matched pairs of low-pass, band-pass and high-pass frequency ranges. Filter cut-off and center frequencies correspond to the major Amateur bands, 160, 80, 40, 20, 15 and 10 meters, with filter module insertion loss of only about 1 dB. Highly regarded by many owners and engineers to be the best receive phasing and noise canceling unit available, the DX Engineering NCC-1 is used extensively by enthusiasts in Amateur Radio DXing, Contesting, AM DXing, and Short-Wave Listening (SWL), and is also used in commercial AM and HF broadcast applications. DX Engineering NCC-1 Receive Filter Sets add a new dimension of functionality to the NCC-1, for advanced directional noise and signal nulling performance, enhanced with specific frequency range operations. By default, NCC-1 filter slots are jumpered to pass all signals. On the NCC-1 front panel, the BAND toggle switch "L" or "H" positions each activate one of two filter pair slots, allowing over 360 degrees of phase rotation in two frequency ranges. The BAND switch "L" position covers from 850 kHz to 8 MHz. The BAND switch "H" position covers from 2 MHz to 15 MHz. Frequencies outside these ranges will have less than 360 degrees of phase rotation. NCC-1 Receive Filter Sets must be placed into the proper BAND filter slots corresponding to desired usage. NCC-1 Receive Filter Sets are pairs of filters (2 of the same type), so both NCC-1 receive antenna inputs "A" and "B" exhibit the same pass-band characteristics. Band-pass, high-pass or low-pass filters are available for users to choose and install into their NCC-1 for their desired application. By reducing or excluding frequency-specific interfering noise and signals, the noise floor of the desired pass-band can be lowered for dramatically improved reception. You can install one set or two sets, depending on your desired filtering. NCC-1 "L" and "H" slots may be populated with pairs of band-pass, high-pass, or low-pass filters to suit the specific signal rejection needs of the discerning operator. As an example, an 80 meter DX enthusiast may elect to install two 80 meter band pass NCC-1 Receive Filters, part number DXE-NCCFL-BPF80M, into their NCC-1 "L" BAND slots. This would dedicate their NCC-1 to 80 meter-only operations. Setting the BAND switch to "L" would dramatically reduce noise and signals from outside the 80 meter band, very effectively excluding interference from nearby AM Broadcast, 160 and 40 meter stations. A much lower noise floor on 80 meters could be achieved for dramatically enhanced reception of weak 80 meter DX signals. An additional pair of filters could be installed into the "H" BAND slots, to enhance reception on the higher HF bands. For example, installing 20 meter high pass filters, part number DXE-NCCFL-HP20M, and switching to BAND H would drastically reduce all received noise and signals from frequencies below 13.70 MHz. With advanced planning of additional filter availability, an NCC-1 owner could even swap different filter sets for optimal operations in different contests or band pursuits. Note: Whenever the DX Engineering "Documentation" tab is available, please look at the associated files for additional product information. All NCC-1 Receive Filter Sets displayed here are also conveniently listed on a single page in the link tab called "Documentation." Order one or two DX Engineering NCC-1 Receive Filter Sets for your unit and enjoy the best possible performance from your NCC-1.
Not Yet Reviewed
$103.97
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$215.97
DX Engineering Tinned Copper Radial Wire Kits
DX Engineering Tinned Copper Radial Wire Kits include plentiful quantities of biodegradable staples and tinned crimp ring terminals that are easily soldered. Along with spools of the same wire as used by the most successful contest stations and DX enthusiasts for their ground-mounted vertical antennas, these kits will help your antenna system achieve optimal performance. The 16 AWG tinned solid copper wire in these kits provide an extremely cost effective solution for the high-count, full-size ground radial wire systems that are required for top-performing HF vertical antenna installations. Ground wire radials do not need to be any specific length because the earth detunes them. Fill your ground-mounted vertical space with radials that run out from the antenna feedpoint in all possible directions, as far as they can go, up to about one-quarter wavelength on the lowest frequency. Even radials that are all about one-eighth wavelength long on the lowest frequency band are just fine for multi-band verticals over reasonably conductive soils. Use longer radials on lossy soils with sand and rocks. In most cases, a greater number of short ground radials will provide greater efficiency and stronger signals than is achieved with a few long radials. DX Engineering Tinned Copper Radial Wire Kits are available in four sizes: Shorter spool kits, 500 ft. and 1,000 ft., are perfect for the single HF ground-mounted vertical. Longer spool kits, 2,500 ft. and 5,000 ft., are intended for 2-element Dual Vertical Arrays, 3-element ProStack Arrays, and 4-element Four Square Array Systems. Each kit has the appropriate number of biodegradable staples and tinned crimp ring terminals. Why is this wire the absolute best choice for any ground-mounted vertical antenna? Because, DX Engineering Tinned Copper Radial Wire will last much longer in a variety of soil conditions as compared to bare copper, copper coated steel or aluminum wires. Radials deployed with those other wire types actually corrode and degrade rather quickly. Unfortunately, they do so slowly enough that the operator does not easily perceive that degradation in terms of antenna system performance. With Tinned Copper wire, full radial system integrity is maintained for a greater number of years. Depending upon soil type, installations with DXE-TCRW16 will maintain vertical antenna performance for many, many years… and even decades. NOTE: To prevent accelerated corrosion and the possibility of noise, DO NOT use metal anchor pins (lawn staples) on Tinned Copper Radial Wire. These kits contain only the DXE-STPL-100BD Biodegradable Anchor Pins to hold down bare wire radials. Biodegradable staples allow easy installation of radial wires and will disperse in a couple years, after they are no longer needed, making them site friendly. Biodegradable staples work best in soft ground where they may be pushed or lightly tapped into the ground. Since they are a lacto-resin material they are subject to breaking in rocky or hard soil and are not intended to be hammered. DX Engineering Tinned Copper Radial Wire kits are the right choice for long lasting top-performance radial systems for your ground-mounted vertical antenna system.
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$152.95
DX Engineering Beverage Antenna Systems
DX Engineering Beverage Antenna Systems are single-wire, single-direction beverage feed systems. Their W8JI design makes them immune to the strong signal overload and core saturation common in multi-transmitter contesting environments. They are used by winning contest stations and low-band DXers. They use an isolated-winding matching-transformer system to significantly increase the signal-to-noise ratio in Beverage and other high-impedance antennas. Now RoHS-compliant, they will work with antenna impedances from 400-500 ohms. The termination resistor included is a special 470 ohm, 2 watt, non-inductive resistor that withstands nearby lightning strikes significantly better than hard-to-find carbon composition resistors. Features include: * 100 kHz to 30 MHz operating range * Spark gaps minimize damage from lightning * Wing nut terminals eliminate soldering * Rugged aluminum housing and stainless steel hardware * Flange-mount holes for easy mounting * Ground isolated secondary can be connected with normal or reverse phase Note: Whenever the DX Engineering "Documentation" tab is available, please look at the associated files for additional product information. Beverage antennas have been in use since the 1920s. These DX Engineering Beverage Antenna Systems modernize the Beverage concept for convenience and performance.
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$115.99
DX Engineering RF PRO Loop Replacement Components
Since DX Engineering manufactures the RF-PRO-1B® Active Magnetic Loop Receive Antenna, we can offer these RF PRO Loop Replacement Components. Available for refurbishing Pixel, InLogis or DX Engineering Active Magnetic Loops, choose one or more of these individual "Original Equipment" components, component set or handy accessory pack that fills your needs. 1. DXE-RFPRO1B-PA Receive Preamplifier has this new part number for the preamp unit only. This is the weatherproof, metal-encased replacement RF PRO 1B Receive Preamplifier that mounts directly onto the loop bracket. Mounting hardware is not included with this replacement low-noise preamp, but it is available in the… 2. DXE-RFPRO1B-OAP Outdoor Accessory Pack. This package contains the insulated shoulder washers, flat washers and nuts to properly mount the preamp. Also included in this outdoor package for the loop installation are the mast mounting V-Bolts and Saddles and the short RG-6 F connector jumper to connect the loop to the preamp, and weather sealer. User supplied RG-6 coaxial cable is used for the long feedline that is run inside to the… 3. DXE-RFPRO1B-PI Power Inserter. This is the indoor unit that puts a well filtered and regulated 20 Vdc power onto the feedline for the preamp. It carries the loop RF to the receiver via the F connector. This unit also disables the power to the preamp when it is keyed by the transceiver amplifier keying line. The Power Inserter is run on 24 Vac from the… 4. DXE-PSW-24A-6AU AC Adapter. This clean power supply is a linear transformer that converts 120 Vac to the 24 Vac at 600 mA required by the Power Inserter. It is has the attached 2.1mm power connector. 5. DXE-RFPRO1B-IAP Indoor Accessory Pack contains the cables and adapter to connect the transceiver RF and keying lines to the Power Inserter. The F connector coaxial cable connects RF from the Inserter to the radio. A supplied F female to PL-259 adapter facilitates that connection, should you radio need it. An RCA phono patch cable is supplied for keying the Power Inserter and a RCA phono y-adapter provides the additional keying line connection for a power amplifier. 6. DXE-RF-30B Complete Component Package is for a system replacement where only an existing RF PRO 1B Loop is available. All of the above individual components, cables and hardware items listed above, items 1 through 5, but not the loop, are included in this DXE-RF-30B package. 7. DXE-PRO-LOOP is the Replacement RF PRO 1B Loop that is ordered by customers who have all other components of their system working. When your damaged or defective loop needs to be replaced, this is the loop only part to order. RF-PRO-1B® Loops may occasionally need a replacement component or hardware package. DX Engineering RF PRO Loop Replacement Components are available right here, at DX Engineering!
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$103.99
DX Engineering Dual Module Chassis
The DX Engineering Dual Module Chassis is the connector and power interface box for all DX Engineering and Clifton Laboratories Plug-In Modules and Receive Filters. The DXE-DMC-2 is a versatile multi-purpose DX Engineering receive device box. It can be used for two passive plug-in modules or one powered module and one passive module. It is a great way to create a wide pass filter, or protect a receiver with a filter and a limiter, or add a preamplifier that has filtering or limiter protection. Here are the modules that can internally plug into the DX Engineering Dual Module Chassis: • DXE-Z10020-PM - Clifton Laboratories Z10020 AM Band Filter Module • DXE-Z10046B-PM - Clifton Laboratories Z10046 High-Gain Preamplifiers • DXE-RG5000HD-PM - Receiver Guard 5000HD Plug-in Module (passive) • DXE-IT-PM - 75 to 50 Ohm Impedance Transformer Plug-in Module (passive) • DXE-RPA-2-PM - Receive Preamplifier Plug-in Module (powered) • DXE-RXFL-1 - Receive Filter Adapter Board, for RXFL Filters (passive) One DXE-RXFL-1 Receive Filter Adapter Board is required to install any one of the RXFL filters listed below. They fit into the DXE-DMC-2, as well as the DXE-NCC-2, DXE-RTR-2 and DXE-RPA-2. The DXE-DMC-2 can accommodate one or two filters to create the filter type and input signal band pass frequency coverage and limitations that serves your needs. NOTE: The transition from the natural aluminum to the black powder coated chassis is occurring in early 2020. There is no internal electronic difference between them. Click on more details to see how you can build the receive accessory of your desires with the DX Engineering Dual Module Chassis.
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$195.99
DX Engineering Maxi-Core® 20 Baluns and Feedline Chokes
The present-day DX Engineering was launched in the year 2000. To celebrate our 20th Anniversary in the year 2020 we have developed a new line of Baluns and Feedline Chokes. Introducing DX Engineering "Maxi-Core® 20" Baluns and Feedline Chokes. They reduce or eliminate currents on the outside of your feedline allowing you to hear and to be heard much better. They keep more RFI/BCI out of your antenna and receiver and transfer more of your transmitted signal to the antenna for higher efficiency, the best antenna pattern and maximum performance. Signaling a new era of RF performance across the 1.8 to 54 MHz frequency range, DX Engineering Maxi-Core® 20 Baluns and Feedline Chokes handle full-legal-power-plus and provide higher common mode impedance (CMI) across a greater frequency range than competing models and even previous DX Engineering and Comtek models. Years of R&D coupled with major advancements in test equipment and techniques combined with custom ferrite materials have allowed our engineering team to design the DX Engineering Maxi-Core® 20 Baluns and Feedline Chokes. Maxi-Core® 20 Baluns and Chokes have high CMI across the AM Broadcast band and the HF/6M spectrum, which is essential to provide sufficient suppression of unwanted transmitted and received RFI/BCI current on the feedline shield exterior. Hear and be heard with DXE Maxi-Core® 20 Baluns and Feedline Chokes. Choose superior performance from these models: * DXE-MC20-1-1 Maxi-Core® 20 - 1:1 Current Choke Balun - For all HF-6m balanced antennas with a 50 ohm feedpoint, including resonant dipoles, loops, Yagis, beams, etc. * DXE-MC20-FC Maxi-Core® 20 - 1:1 Feedline Choke – This high CMI line isolator is perfect for use in line on 50 ohm coaxial feedlines, at the antenna, tower or shack end of the feedline. * DXE-MC20-1-1T Maxi-Core® 20 - 1:1 Current Choke Balun – This 1:1 "T" model is for force feeding antennas with a tuner. Use it at the end of ladder line of any impedance or mounted on a coax fed non-resonant antenna. This model tolerates operation at high SWR on non-resonant multi-band antennas. * DXE-MC20-C4-1 Maxi-Core® 20 - 4:1 Current Choke Balun is for use on antennas with a 200 ohm feedpoint and at the end of any impedance ladder line, especially on antenna systems with higher impedance. This model tolerates operation at high SWR on non-resonant multi-band antennas. * DXE-MC20-V4-1 Maxi-Core® 20 - 4:1 Voltage Balun is a 200 ohm to 50 ohm transformer for use on random long-wire and OCF antenna applications. This true voltage balun is intentionally designed with low CMI for antennas that need a transformer without RF choking for easier antenna tuner operation and it tolerates elevated SWR. Maxi-Core® 20 Baluns and Feedline Chokes are built into a convenient weather resistant NEMA enclosure that is mounted easily with optional brackets. They feature 1/4-20 stainless steel hardware and a high quality silver-plated PTFE dielectric SO-239 (UHF female) input connector. The SO-239 connector limits power handling to 5 kW at low SWR and reduced power at elevated SWR. These baluns and the feedline choke exhibit very low insertion loss and inherently low SWR. Optional mounting brackets are available for use on wire antennas or for verticals, Yagi and beam antennas. See the Suggested Parts tab after clicking "More Detail" on the model of interest. Combination packages that include balun or choke and mounting bracket are also available.
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$147.99
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