Availability
Receive Antennas and Arrays
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.
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$809.99
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
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$1,999.92
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
Unified Microsystems BevFlex-4X and BevFlex-4X/Q Reversible Receive Antenna System
Unified Microsystems BevFlex-4X Reversible Receive Antenna System is a very versatile two-direction low band receiving antenna. This is the updated and improved version of the W8GNM revolutionary design that uses only low cost, low loss RG-6 for the elements and the feedline of a Reversible Beverage antenna or Reversible Beverage on Ground antenna. Plus, it uses specially designed transformer units that allow the feedpoint unit to be placed anywhere along the length of the Reversible Beverage or BOG, instead of only at one end or the other. Like for other Beverage antennas, the Elevated Beverage or a Beverage on Ground (BOG), the performance of the reversible BevFlex-4X system depends upon the length of the user supplied RG-6 coax for the antenna element. Also, the versatile BevFlex-4X components may be used to create a two-direction version of any one of these antennas, using a much shorter length of wire for the receiving element: * EWE * Flag * VE3DO Loop BevFlex-4X Systems consist of four components; one Feed Unit, two Terminator Units and one Control Switch Unit. The Feed and Terminal Units are house in NEMA rated enclosures and use stainless steel hardware for maximum weather protection. Do you need enhanced reception in four directions? The BevFlex-4X/Q combines two sets of Terminator and Feed Units with the RAS-4 remote antenna switch to let you hear better in all four quadrants. The BevFlex-4X antennas can be any mix of Beverage, BOG, Flag, EWE, or VE3DO. The included RAS-4 Remote Antenna Switch only requires a single coax and four wire control cable to the shack. NOTE: An in-shack four direction switch control box is not included. Choose a control console from DX Engineering, EA4TX and others, or build your own. Just add RG-6 coax and ground rods! Click "More Details" and the Brochure link at the Documentation tab to see pdf diagrams of all of these two and four-direction BevFlex receive antenna system connections. Depending upon the real estate you have available, the FAQ chart will help you choose the Unified Microsystems BevFlex-4X or BevFlex-4X/Q configuration that fits your property and your low band reception needs!
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$349.99
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$649.95
Hi-Z® Antennas PC-8PRO 8 Circle Array Phasing Controller
The Hi-Z Antennas PC-8PRO 8 Circle Array Phasing Controller is the primary component in the Hi-Z Antennas Eight Element V2 Multi-Band 8 Circle Receive Array System, intended for 160-, 80- and 40-meter band coverage, with useful functionality from 500 kHz to 15 MHz. The HIZ-PC-8PRO Phasing Controller and system components combine to provide an effective directional receive pattern that is electronically switchable to eight different directions. The Hi-Z Antennas Eight Element V2 Multi-Band 8 Circle Receive Array System provides enhanced signal-to-noise performance with Receive Directivity Factor (RDF) approaching 12dB and up to 35dB array front-to-back! The HIZ-PC-8PRO is the heart of this antenna which provides dramatically improved reception over transmitting antennas. It properly combines signals from eight receive short element active verticals which are each ground-mounted on a ground rod, in a circle. DXE-RSEAV-1 are sold separately, which use DXE-AVA-3 Element Amplifiers. Sharper cardioid patterns with deeper reverse nulls are developed by the 8 Circle than other arrays. This Phasing Controller and other system components provide an effective receive pattern that can be electronically rotated to eight different directions: typically, 45, 90, 135, 180, 225, 270, 315 and 360 degrees. Standard 85 ft. diameter 8 Circle Arrays provide 160-, 80- and 40-meter band coverage with an exceptional cardioid pattern, supported with the updated delay cables HIZ-DL4-60-85 (Long and Short, sold separately). Alternatively, choose HIZ-DL4-80-113 cables (Long and Short, sold separately) for a 113 ft. diameter 8 circle which increases performance on the 160 and 80 meter bands. The HIZ-MDC-8PRO is the required Manual Directional Control Switch Console, sold separately. The HIZ-PC-8PRO also serves as a replacement part for Hi-Z 8 Circle system owners to order Hi-Z PC-8PRO V2 Phasing Controller. See the listing for more information.
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$649.00
Moonraker X1 HF Vertical Receive Antennas
Moonraker X1 HF Vertical Receive Antennas are ideal for those who want to listen to shortwave but have limited space to erect larger antennas. This antenna features helical wound, internally loaded wire traps that are a great alternative to a long wire and the RX capabilities range from 1-50 MHz without the need for radials. This antenna is easy to assemble and comes ready to mount to any mast up to 1.50 in. (not included). Additional Features and Specifications: * Antenna Height: 6.562 ft. (200cm) * Antenna Connector: UHF SO-239 * Mast Clamps (included) * RG-58 Coax Cable Assembly: 32.808 ft. (10 M) PL-259 to SMA (included)
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$219.99
QRO.cz RX Preamp and Bias Tee Module Box Combo
This powerful combo from QRO.cz includes the RX Preamp Module Box with a 2N5109 transistor and a Bias Tee Voltage Injector, offering a complete solution for enhancing receive-only antenna systems. The preamp is based on the proven W7IUV design and delivers up to 18dB of gain with a built-in variable attenuator, allowing precise control over signal amplification. A multi-turn potentiometer enables fine-tuning of the transistor bias for optimal linearity and performance. Two onboard relays automatically switch the unit to bypass mode when power is not present. Power can be supplied either directly via an external DC source or through the included bias tee, which injects DC voltage into the coaxial feedline while isolating the radio from DC current. The bias tee simplifies installation by combining RF and DC over a single coaxial cable, making it ideal for powering remote devices like preamps, relays, or antenna switches. Together, these components provide a clean, efficient, and flexible receive system for antennas such as beverages, Double Half Delta Loops, flags, and other popular RX designs.
Not Yet Reviewed
$299.99
QRO.cz RX AuditePRE3 SDR Antenna Switch Controllers
QRO.cz RX AuditePRE3 SDR Antenna Switch Controllers combine the functionality of a T/R switch, a receive antenna input and a receive splitter with specialized switching, all with RF limiter protection. The transmit/receive (TX/RX) main antenna can be shared with both outputs, transceiver and receiver (SDR) with RF power limiter protection. These versatile devices are perfect for use with a separate SDR receiver for Spectrum Panadapter, WebSDR or as a Skimmer Server to contribute spots to the Reverse Beacon Network (RBN). The RX-AuditePRE3 features frequency coverage of 100 kHz–60 MHz including 160 through 6 meters with a maximum transmit power handling of 200W and a switchable 16 dB preamplifier. Included in the Package: RX-AuditePre3 Switch – Assembled and Tested DC Cable – DC barrel connector to stripped and tinned wires
Not Yet Reviewed
$509.99
United Microsystems BT-75/BOG Beverage-On-Ground Antenna Transformers
The United Microsystems BT-75/BOG Beverage-on-Ground (BOG) Antenna Transformers are specifically designed for Beverage-on-Ground receive antennas and is based on the proven BT-75 transformer used with elevated Beverage antennas. Because BOG antennas are installed directly on or just above the ground, they require no supports and can be significantly shorter than traditional Beverage antennas, making them a practical option where space is limited. BOG antennas typically exhibit lower impedance than elevated Beverage antennas. The BT-75/BOG is optimized to provide proper impedance matching between the antenna and 75-ohm RG-6 coaxial cable, improving performance compared to standard Beverage transformers. For correct operation, the far end of the antenna must be terminated with a 250 to 300-ohm resistive load. The United Microsystems RXT-270 termination resistor is recommended. Properly installed Beverage antennas are low-noise, receive-only antennas that provide excellent rejection of signals and noise from the undesired direction. Due to the lower velocity factor of radio waves near the ground, a BOG antenna can often deliver a radiation pattern similar to an elevated Beverage antenna of roughly twice the length, though with reduced signal strength. A BOG antenna as short as 150 to 200 feet can provide effective receive performance, although a preamplifier may be beneficial in some installations. The BT-75/BOG is designed for use with 75-ohm RG-6 coaxial cable. Originally developed for television applications, RG-6 offers low loss at VHF and UHF frequencies, resulting in extremely low loss on the 160, 80, and 40-meter bands. Its availability and low cost make it a popular choice for low-band receive antenna feed lines. The transformer is housed in a NEMA-rated enclosure with stainless steel hardware for long-term outdoor durability. A built-in gas discharge tube across the antenna terminals helps protect the transformer from nearby lightning-induced surges, although it will not provide protection against direct or very close lightning strikes.
Not Yet Reviewed
$37.95
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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$17.49
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$464.45
DX Engineering Clifton Laboratories Z10020 AM Band Filter Module
DX Engineering Clifton Laboratories Z10020 AM Band Filter Module drastically reduces RF signals in the 530 to 1700 kHz MW range while passing frequencies below and above this range with minimal attenuation. A large section of the AM Broadcast Band (BCB) is attenuated by nearly 70db with a maximum of 75dB. Response rolls off quickly above 490 kHz and below 1.8 MHz. Detailed plots demonstrate the excellent performance of this AM band receiving rejection filter. The DXE-Z10020-PM RX AM Reject Filter plug-in module is our version of the 7th Order Chebyshev design built to deliver the performance of the original Clifton Labs AM Broadcast Band (BCB) filter. It provides excellent Broadcast Interference (BCI) filtering performance for Amateur low band and commercial SW receive applications, with less than 2dB insertion loss across the 160 meter band. The DXE-Z10020-PM module can be installed in the DXE-DMC-2 Dual Module Chassis to create an inline high-performance receive-only AM Band Reject Filter. Or, install one of these versatile AM filter modules inside of the DXE-RPA-2 Receive Preamplifier or the DXE-RTR-2 Receive Antenna Interface. Two AM BCB Reject Filter modules will cover the two channels of the DXE-NCC-2 Receive Antenna Phasing Unit. The legacy built by Jack Smith, K8ZOA (SK), at Clifton Laboratories lives on with select products by DX Engineering.
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$163.99
ELAD ASA62 Amplified Antenna Splitters
ELAD ASA62 Amplified Antenna Splitters are designed to distribute the signal from six antennas to two different receivers simultaneously. A powerful Amateur Radio or SWL station requires multiple antennas to optimally cover each frequency range. The ASA62 Amplified Antenna Splitters from ELAD (Italy) allows you to distribute up to six antennas to two receivers. Each input is buffered by a very low-noise amplifier (AD8099), ensuring that the signals do not interfere with each other. By doing so, the signal from one antenna can be sent to both receivers simultaneously. Switching is done via relays, not PIN diodes, to avoid unwanted signal distortion. Operation is straightforward with push buttons on the front panel, and LEDs built into the buttons clearly indicate their status. Alternatively, the ASA62 can be operated remotely, with free software available for download on the Microsoft Windows platform. The frequency range is 9kHz to 70MHz, all connectors are BNC female, and the impedance is 50 Ohms. A DC power supply cable is included. Note that the ASA62 is not suitable for transmitting.
Not Yet Reviewed
$309.99
QRO.cz Classic Single Output 2-Wire Bi-Directional Beverage Antenna Systems
QRO.cz Classic Single Output 2-Wire Bi-Directional Beverage Antenna Systems are designed for efficient direction switching using an internal relay, with control achieved directly over the coaxial cable. When no voltage is present on the coax, the antenna operates in the reverse direction (compared to a single-wire beverage). Applying voltage to the coax switches the antenna to the forward (straight) direction, matching the behavior of a single-wire beverage antenna. With careful design and construction, a single 2-wire beverage antenna can provide excellent performance in two directions. Unlike single-wire systems that use only a load resistor at the end, this system uses a transformer specifically designed to match the antenna's impedance. All transformers in the system must be precisely calculated based on the antenna's physical parameters—such as height, wire spacing, and wire diameter—to ensure optimal performance.
Not Yet Reviewed
$143.99
QRO.cz RX AuditePRE SDR Antenna Switch Controllers
QRO.cz RX AuditePRE SDR Antenna Switch Controllers combine the functionality of a T/R switch, a receive antenna input and a receive splitter with specialized switching, all with RF limiter protection. The transmit/receive (TX/RX) main antenna can be shared with both outputs, transceiver and receiver (SDR) with RF power limiter protection. These versatile devices are perfect for use with a separate SDR receiver for Spectrum Panadapter, WebSDR or as a Skimmer Server to contribute spots to the Reverse Beacon Network (RBN). The RX-AuditePRE features frequency coverage of 100 kHz–60 MHz including 160 through 6 meters with a maximum transmit power handling of 200W and a switchable 16 dB preamplifier. Included in the Package: RX-AuditePre Switch – Assembled and Tested DC Cable – DC barrel connector to stripped and tinned wires
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$509.99
QRO.cz Classic Dual Output 2-Wire Bi-Directional Beverage Antenna Systems
QRO.cz Classic Dual Output 2-Wire Bi-Directional Beverage Antenna Systems are designed for advanced receiving setups, particularly in contesting and multi-radio environments. This system features two SO-239 output connectors, each corresponding to a different direction. Both outputs are active simultaneously, allowing the antenna to receive signals from opposite directions at the same time. This dual-output capability makes the system ideal for SO2R (Single Operator Two Radios) and MM (Multi-Multi) operations, where multiple radios or operators need to share directional antennas efficiently. Instead of switching directions manually or electronically, this design enables real-time, dual-direction reception, enhancing flexibility and performance in competitive or complex station configurations.
Not Yet Reviewed
$143.99
DX Engineering 2-Port Receiving Antenna Switches
DX Engineering 2-Port Receiving Antenna Switches are for receiving systems designed to allow for the selection of one of two output ports from one feedline. Typically connected to different receiving antennas, these RoHS-compliant receive antenna switches activate with the application of a control voltage injected onto the feedline of either +10-15V DC or 9-12V AC. The optional DX Engineering Feedline Voltage Coupler may be used to supply control voltages through a single main feedline. Three RLS-2 Two-Port Receiving Antenna Switches may be configured to allow control of the switching selection of four different receiving antennas. When used with two DX Engineering Reversible Beverage Systems, one of these RLS-2 units will delegate switching voltages and allow for the selection of four directions, sharing the 75 ohm feedline, and passing 500 kHz through 30 MHz receive back to the operating position. Features of DX Engineering 2-port receiving antenna switches include: * Metal housing for superior shielding and long life * High-quality components * Reliable F-type connectors * Jumper-selectable, control voltage pass-through to the activated port Note: Whenever the DX Engineering "Documentation" tab is available, please look at the associated files for additional product information. Build your special receive antenna switching system with DX Engineering 2-Port Receiving Antenna Switches!
Not Yet Reviewed
$115.99
Antennas-Amplifiers 6500 Ultra Low Loss 70cm Receive Band Pass Filters
Antennas-Amplifiers 6500 Ultra Low Loss 70cm Receive Band Pass Filters are especially engineered for high performance terrestrial and EME applications. Placed ahead of any wideband LNA, it prevents overload and desensitization caused by strong out of band signals while preserving the amplifier's noise figure. It's precisely defined 430–450MHz passband ensures clean signal reception without compromising weak signal performance, even in demanding RF environments. Designed for stations requiring maximum front end protection with minimal insertion loss, this filter delivers exceptionally high input return loss and rugged, reliable connectivity through N type female connectors.
Not Yet Reviewed
$170.99
DX Engineering Receive Filter Plug-In Modules
DX Engineering Receive Filter Plug-In Modules provide frequency-specific receiving system enhancements, which fit into special DX Engineering devices listed below. These advanced plug-in filter modules are available separately to allow any user to create a specific or customized filter with 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 1dB. By reducing or excluding frequency-specific interfering noise and signals, the noise floor can be lowered for the desired passband for dramatically improved reception DX Engineering Receive Filter Plug-In Modules may be installed in these devices: DXE-DMC-2 Dual Module Chassis accepts one or two filter modules to create a stand-alone passive inline filter unit of any configuration. One high pass and one low pas can be combined to create a multi-band bandpass filter of any HF range. DXE-RPA-2-PM Modular Receive Preamplifier accepts one Receive Filter Plug-In Module to customize the preamplifier passband. DXE-NCC-2 Receive Phasing Controller can accept one or two Receive Filter Plug-In Modules, one into each, Channel A and Channel B. The DX Engineering NCC-2 is highly regarded by many owners and engineers to be the best receive phasing and noise canceling unit available and 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 Receive Filter Plug-In Modules add an extra dimension of functionality to the NCC-2, for advanced directional noise and signal nulling performance, enhanced with a specific frequency range operations. By default, NCC-2 internal option slots have bypass boards to pass all signals. Receive Filters placed into these slots dedicate the unit to filtered operation. Typically, one pair of band-pass or high-pass or low-pass filters, depending on desired filtering, is installed in the NCC-2 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 Receive Filter Plug-In Modules, part number DXE-R-BP80-PM, into their NCC-2 Channel A and Channel B middle slots. This dedicates their NCC-2 to 80 meter-only operations. This dramatically reduces 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 across 80 meters can help achieve reception of weak 80 meter DX signals. An additional pair of filters can be swapped out for a different band when desired. Note: Whenever the DX Engineering "Documentation" tab is available, please look at the associated files for additional product information. All Receive Filter Plug-In Modules displayed here are also conveniently listed on a single page linked in Documentation.
Not Yet Reviewed
$49.99
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$54.99
DX Engineering Receive 8 Circle Array Controllers
DX Engineering RCA8C-1 Receive 8 Circle Array Controllers are the highly sophisticated switch controller relay units from the Eight Circle Array Systems--the receiving systems that use time delay phasing--rather than the conventional narrow-band, frequency-dependent phasing, to provide eight 45 degree spaced directional patterns. The RCA8C time delay phasing is directivity-optimized to produce wider and deeper rear nulls and a narrower main lobe. The result is that noise and undesirable signals are greatly reduced for a superior front-to-rear ratio (F/R). Better control of phase and currents provides a cleaner pattern with the Receive 8 Circle than is available with vertical antenna transmit arrays. DX Engineering Receive 8 Circle Array Controllers are designed to be used with eight identical vertical active or passive vertical elements, symmetrically spaced in a large circle, to provide switching for an 8-direction receiving antenna system. Passive elements will generally provide you with a monoband receiving system. Finally, these systems offer greater reliability in receiving applications. Receive Eight Circle Array Controllers use sealed relays sized for receiving applications with silver contacts to prevent oxidation and contamination. Most transmitting four-square switches use large open-frame relays where the contacts are exposed to the air, which can lead to contamination. Relays with brass contacts can oxidize, leading to poor conductivity. Receive Eight Circle Array controllers feature: * W8JI design * Operation from 100 kHz to 30 MHz * Excellent directivity for better signal-to noise ratio * Switching console provides eight 45 degree spaced directions * Less physical space and maintenance required than phased Beverage antennas * Low current DC powered control console allows system operation without AC power mains The optional DX Engineering Eight Circle Receive Short Element Active Vertical Antenna Package, DXE-RSEAV-8, offers excellent receiving performance from 100 kHz to 30 MHz, while using only a 8.5 ft. (2.6m) aluminum vertical antenna elements. A unique design makes the Receive Eight Circle Array System vastly superior to traditional active vertical antennas in both strong signal handling and feedline decoupling. This results in significantly better weak signal reception due to lower spurious signal interference and reduced noise. DX Engineering RCA8C Receive 8 Circle Array Controllers are the foundation of your Eight Circle Array!
Not Yet Reviewed
$499.99
DX Engineering Receive Filters
DX Engineering Receive Filters are available individually for use in the NCC-2, RPA-2, RTR-2 or DMC-2 with adapter boards. These filters are also available in sets with mounting fixtures for use in the NCC-1. DX Engineering Receive Filters are numbered for the key Amateur Band on which they function. The Band Pass filter models pass RF only on the numbered band, the High Pass models function on that band and all device frequencies above, and the Low Pass models work on that band and all device frequencies below. Response plots for Receive Filters are conveniently listed on a single page in this product's detail web page tab labeled "Charts and Guides". Some users will want to use a pair of these filters with two of the required DXE-RXFL-1 Filter Adapter Boards in their NCC-2. Each individual filter used requires a DXE-RXFL-1 Single Filter Adapter Board to convert them for installation in DX Engineering device models DXE-NCC-2, DXE-RPA-2, DXE-RTR-2 or DXE-DMC-2. All of the RXFL filters are still available in paired sets including two filters and one filter mounting fixture for owners of the legacy NCC-1 unit. See the Receive Filter Sets in combo packages by entering NCC-1 into the search box above.
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$35.99
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$163.99
DX Engineering Transmit Receive Interrupter Plug-In Module
DX Engineering Transmit Receive Interrupter Plug-In Module, DXE-TRI-PM, provides essential protection from the station's transmitted energy picked up by a receive antenna that is connected to the DXE-NCC-2 Channel B Receive Antenna Input active front end. This optional custom PCB relay switch device is typically installed in the top Option Slot of the Channel B rear panel board in the NCC-2. When the transceiver keys the RADIO PTT port of the NCC-2, the DXE-TRI-PM can open or ground the receive antenna input and the board output, as selected by jumpers. It functions independently and does not affect or depend on the settings of the NCC-2 Bias-Tee Enable circuit that places DC on the receive antenna feedline for Active antennas. The DXE-TRI-PM is only in the path of the receive antenna input. It also features a Gas Discharge Tube to protect the front end of the NCC-2 while in the receive mode. Adding a second DXE-TRI-PM Transmit Receive Interrupter Plug-In Module to the the top slot of the NCC-2 Channel A rear panel board is recommended. The gas tube provides pulse energy protection during receive and disconnect or grounding protection when the CH A RX ANT IN port is used for a receive antenna that is physically too close to the transmit antenna. Adding a DXE-TRI-PM can provide input protection for the RTR-2 RX ANT IN during receive and by grounding the receive antenna input during transmissions. Alternatively, the DXE-TRI-PM installed in the DXE-DMC-2 Dual Module Chassis can interrupt or ground any receive antenna feedline or a receiver input. Jumper settings select opening or grounding of the receive antenna input and receiver output. This receive feedline RF switch is operated by toggling 13.8 VDC, on for Receive and off when Transmitting. The DMC-2 PCB jumper HD5 selects operating DC from either the 2.1mm power connector or the "Receiver Output" coaxial cable with a user supplied DC Bias-Tee device, such as the DXE-FVI-1 Feedline Voltage Injector. Remote outdoor installation requires a weather resistant cover.
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$44.99
Unified Microsystems RXT Terminating Resistors
Complete your receive antenna system with Unified Microsystems RXT Terminating Resistors. These resistors are designed to handle tough environments. Housed in NEMA-class enclosures with stainless steel hardware, their integrated flanges make mounting easy and secure. The 2 watt ceramic resistors are non-inductive, conformal coated, and protected by gas discharge tubes against surge and lightning strikes. Three models are available for different types of receive antennas: 270 ohm, 470 ohm, and 1,000 ohm. Enclosure dimensions: 2.0 in. wide, 3.2 in. deep, 1.4 in tall Many years of inquiries for an enclosure for the Beverage and other receive antenna terminations have been answered! Order Unified Microsystems RXT Terminating Resistors from DX Engineering today!
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$21.99
DX Engineering Receive Feedline Voltage Couplers
DX Engineering FVC-1 Feedline Voltage Couplers provide an interface between control switches and voltage-controlled antenna systems. These specialized controllable bias-tee devices place 0V DC, +12V DC, -12V DC, and 12V AC output voltages onto the receive antenna feedline via the 75 ohm F connector or onto a 2-conductor control line. These FVC-1 couplers function from below 500 kHz to 30 MHz and provide four selections for switching antenna array directions or changing from one array to another. These couplers were designed for use with; the DX Engineering receive-only four-square antenna systems, reversible Beverage antenna systems, and remote switches. DX Engineering switch control consoles may be connected directly to the BCD switch control input of FVC-1 couplers. Alternatively, you may use your own 12V DC voltage switching system or 1 of 4 grounding switches to control the coupler by resetting internal jumpers. The connection of the feedline voltage couplers to any radio receive antenna input is to be made using either the standard RCA phono or the F connector. This allows for the use of readily available RF-compatible RCA phono patch cords or a 75 ohm coaxial cable and connectors, which protects your receive system from an accidental connection to transmitting equipment. FVC-1 feedline voltage couplers have two LED indicators--red and green--which indicate the presence and polarity of the output control voltage selected. The LEDs may function as directional indicators that can be read at a convenient distance or they can aid in troubleshooting. Each of our DX Engineering FVC-1 Feedline Voltage Couplers comes with a heavy duty 120V AC wall transformer, which provides a safe 12V AC to operate your receive antenna system. Here are other exclusive features of FVC-1 voltage couplers: * Metal housing--superior shielding, rugged, and easy mounting * Convenient installation--mount anywhere in your shack * Rugged control connector - a reliable, solderless, and removable connector with screw conductor clamps * Internal thermal reset fuse offers full protection against accidental shorts Note: Whenever the DX Engineering "Documentation" tab is available, please look at the associated files for additional product information. Got antenna switching voltages? DX Engineering FVC-1 Feedline Voltage Couplers will solve many switching needs easily and economically!
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$185.99
KD9SV Products SV-DXSS DXpedition Receive Antenna Switches
KD9SV Products SV-DXSS DXpedition Receive Antenna Switches are the ultimate unit for the active low-band DXer. They combine their legendary Front End Saver with the 80/160 Variable-Gain Preamp, a Four-Position Receive Antenna Switch and a high-speed Solid State Amplifier Keying Interface, all into one easy-to-use package. Originally designed for DXpeditions, they are sure to be on the wish list of all low-band DXers! DXpedition Switches were built to be connected to transceivers that ARE equipped with receive outputs and inputs, and to the transceiver's amplifier keying line. DXpedition Receive Switches will directly key all late-model RF power amplifiers. They include a heavy-duty relay for receive antenna disconnection and transceiver RX ANT INPUT grounding, giving your transceiver the ultimate in front-end protection. The four-port antenna switch allows you to select from different receive antennas and the variable-gain control adjusts for 10 to 28 dB preamplification with dual-band band-pass filtering. This lets you choose, on the fly, the correct antenna and gain combination for optimal signal-to-noise for changing band propagation conditions. You may also bypass the unit when you are operating on the higher bands or to listen to the low band transmitting antenna. KD9SV DXpedition Receive Antenna Switches include the Front End Saver, with a lightning-fast solid-state amplifier keying system that is full break-in CW (QSK) capable for all modern amplifiers. They can handle legacy amplifier positive DC voltage keying lines up to 500 Vdc at 8 A. However, DXpedition keying circuits will not work with amplifiers that have negative DC voltage keying lines such as the Heathkit SB-200, Yaesu FL2100-B or Collins 30L-1. For these and other negative DC voltage keyed amplifiers, pair these DXpedition Switches with KD9SV Products SV-KR External Keying Relays. Whether you are a DXer, contester, antenna experimenter, or just want easy access to multiple receive antennas, KD9SV Products SV-DXSS DXpedition Receive Antenna Switches will organize your station as never before! Order yours now, exclusively from DX Engineering!
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$353.99