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DX Engineering RTR-2 Modular Receive-Transmit Interfaces
DX Engineering RTR-2 Modular Receive-Transmit Interfaces provide the easiest and safest method for connecting a dedicated receive antenna to an HF transceiver that does not have a separate receive antenna input. Placed inline with the transceiver's antenna connector, the RTR-2 does the job of a 200 watt T/R relay using the amplifier keying line for failsafe protection, so your transmitted energy cannot go to the receive antenna. Three internal Plug-in Module option slots provide added features and protection: * DXE-RPA-2-PM Receive Preamplifier Plug-in Module * DXE-TRI-PM Transmit Receive Interrupter Plug-In Module * DXE-IT-PM 75 to 50 ohm Impedance Transformer Plug-in Module DX Engineering RTR-2 Modular Receive-Transmit Interfaces allow the standard transceiver owner to enjoy the advantages of separate receive antennas. For the unswitched receive antenna (RX ANT) port on expensive transceivers, the RTR-2 interface also adds inexpensive failsafe protection. The receive antenna line can be opened or grounded with the optional DXE-TRI-PM Interrupter plug-in module. The RTR-2 is a very useful device for many applications, including: * Connection of external receiving antennas to transceivers lacking external antenna ports * T-R antenna switch for older equipment using separate transmitters and receivers * Interfacing antennas to older phasing or noise cancelling systems * Addition of a switchable receive preamplifier to any transceiver or transmitter and receiver combination * Excellent failsafe receiver protection for close-spaced transmit and receive antennas, without performance degradation of diode circuits of other devices. RTR-2 units feature a unique, failsafe connection method that prevents the hot switching and timing errors that are common on other transmit/receive relays. RTR-2 interfaces switch fast enough for partial break-in CW operation. There are many simple applications for the new RTR-2 and now internal modules can add dramatically improved reception of those really weak signals on the crowded HF bands! DX Engineering RTR-2 Modular Receive-Transmit Interfaces enable operators to enjoy improved reception with any low noise receiving antenna system. This shielded enclosure relay system provides a safe method of connecting a receive antenna, such as a Beverage, Active Receive system, or other receiving accessories to your radio. Major features that make the DX Engineering RTR-2 Receive Antenna Interfaces your best choice for a receive T/R system device: * New Status Indicating Color-changing LEDs * Three internal slots for new DX Engineering modules * New Key Line Out connector for Amplifier * New internal jumper for placing DC on the Receive Antenna feedline for Active or Loop receive antennas * Attractive and heavy stainless steel enclosure * 200 watts RF switching capability * Supports CW partial break-in * Main transmit antenna connector is SO-239 (UHF female) * Radio RF connector is SO-239 (UHF female) * Receive antenna input is 75 ohm F connector * Receive outputs are standard 75 ohm Type F connectors * Inputs are 50 ohm BNC or 75 ohm F (Optional transformer module available) * Safe switching--transmit antenna is always connected to transceiver on power-off * Hot switching lockout--disables receive antenna during transmit mode (Optional DXE-TRI-PM can be set to short the RX ANT line) * Versatile--allows inclusion of Optional RF preamplifiers and other plug-in modules * Simple 13.8 Vdc input for all operations An indispensable accessory for the DX enthusiast and useful for any Amateur's shack, DX Engineering RTR-2 Modular Receive-Transmit Interfaces can help you expand and improve your station's antenna connections and the protection of your equipment.
( 12 )
$375.99
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!
( 19 )
$955.99
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.
( 6 )
$139.99
WiMo QRM Eliminator
The WiMo QRM Eliminator is a simple signal phasing device that can effectively reduce or remove noise interference for dramatically improved reception from 3.5 to 60 MHz. The QRM Eliminator is based on a totally innovative concept and cannot be compared to the performance of noise blanker or DSP circuits. Removing the noise before it gets to the receiver is the superior method of interference reduction. With the WiMo QRM Eliminator you can get rid of local interference almost entirely, up to an S9 level, with the likely result of completely clear reception! You don't have to understand the cause or type of interference nor do you need to know the location of its source. It doesn't matter if the interference originates from your own station or from a welding unit hundreds of feet away. The QRM Eliminator simply connects to the antenna port of transceiver and to the antenna (or amplifier input), without any radio modifications required. An additional user supplied auxiliary receiving antenna is required, such as a properly positioned 8 ft. outdoor dipole antenna or a simple 20 ft. wire in the shack, for example. This "noise sense" antenna receives mostly unwanted signal, while the transmitting antenna receives the same interference in a different phase along with the desired signal. The QRM Eliminator allows the adjustment of the amplification and phase to cancel out the unwanted signal before it reaches the receiver front end! Noise or interference nulling can provide over 45 dB of unwanted signal suppression, in many cases resulting in clear reception of the desired signal. The QRM Eliminator is built into a shielded metal enclosure, functions over the frequency range of 3.5 through 60 MHz, and has a status LED to indicate when the unit is turned on for phasing. The unit has a built-in T/R relay with PTT control via a rear panel RCA phono connector for the transceiver amplifier keying line. The QRM Eliminator automatically switches the Main antenna connection to the transceiver during transmit. Also, simply turn the unit off to bypass the phasing unit for normal reception on the Main transmit antenna. Click "More Detail" below to see additional information about this exciting device. You may not believe the power of interference phase nulling until you have experienced it for yourself. Order the WiMo QRM Eliminator exclusively in North America from DX Engineering.
( 25 )
$229.99
DX Engineering Receive Feedline Voltage Injectors
DX Engineering Feedline Voltage Injectors, DXE-FVI-1, are high-quality bias-tee devices that place direct current onto a receive antenna system's coaxial cable while preventing DC from reaching the Radio port. These FVI-1 voltage injectors are used to power active accessory devices, such remote relays, switching systems, and preamplifiers. These are the original equipment FVI-1 units provided with single DX Engineering Active Receive Vertical antenna models. Voltage is applied via the 2.1mm power connector to the receive antenna feedline F connector. The RCA phono jack connects to the receiver input with that DC voltage blocked, while passing RF from 100 kHz to 30 MHz. Various RCA phono plug adapters for different RF cable connectors are available in Suggested Parts. Two DXE-FVI-1 feedline voltage injectors may be connected at opposite ends of a feedline to provide DC voltage on the transmission line for your own custom application, keeping the input and output RF devices isolated from the voltage. The included 120V AC 60 Hz wall transformer power supply may be connected to the 2.1mm power connector may to place approximately +12 volts DC on the coaxial cable center conductor, with the coaxial cable shield used as the negative ground return. A different station power supply, 1-16 VDC, may be used with an in-line, 1 Ampere, fast-blow fuse for various devices. DX Engineering feedline voltage injectors are ready for your "DC power on the coax" needs! Note: Whenever the DX Engineering "Documentation" tab is available, please look at the associated files for additional product information. When you need to inject a DC voltage onto a 75 ohm coaxial cable used for receiving, remember the DX Engineering Feedline Voltage Injector!
Not Yet Reviewed
$99.99
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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$17.49
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$464.45
Hi-Z® Antennas DL-3A Delay Cables
Hi-Z® Antennas DL-3A Delay Cables are an essential component of the Hi-Z Three Element V2 Triangular Array, required for installation of the a HIZ-PC-3A Phasing Combiner. Order one HIZ-DL-3AL Long Delay Cable for 40 ft. element spacing of the Hi-Z Three Element V2 Triangular Array. For arrays larger than 40 ft. element spacing, add one HIZ-DL-3AS Delay Cable Set, which includes three 3 ft. extension cables to provide adjustment capability for array size. Use all three for an array with 50 ft. element spacing. The 23 ft. DL-3AL is combined in-line with a single or multiple 3 ft. extensions from the DL-3AS. They connect in series to the PC-3A V2 Phasing Controller Delay Line ports. Signal delay with added cable segments allows the user to accommodate different size arrays, 40 through 50 ft. element spacing, or to manipulate the patterns to achieve changes in Receive Directivity Factor (RDF). See the Hi-Z Three Element V2 Triangular Array Phasing Combiner listing for additional information.
Not Yet Reviewed
$29.99
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$35.99
DX Engineering Reversible Beverage Systems
DX Engineering Reversible Beverage Systems basically allow two Beverage antennas to be switched to receive in opposite directions while sharing the same physical space. DXE-RBSA-1P Reversible Beverage Systems antennas provide two opposite "end-fire" directional patterns with excellent front-to-rear directivity and superior signal-to-noise ratio as compared to transmitting antennas. Dramatically improved long distance weak signal results may be achieved on MW and the 160, 80 and 40 meter bands, including shortwave bands, with receive-only Beverage antennas using wires that are typically only 350 to 800 feet long, depending upon the band of interest. The two-direction DXE-RBSA-1P Reversible Beverage Systems offer a space and installation advantage because two opposite single-wire Beverage antennas would require twice the length. DX Engineering Reversible Beverage Systems are immune to the strong signal overload and core saturation common in multi-transmitter contesting environments and are used by winning contest stations and low-band DXers around the world. These Reversible Beverage antennas have two "F" connectors; one "Away" port for the default end-fire receiving pattern off the end of the wire, and one "Toward" port for the opposite direction. The standard configuration of these systems has the "Toward" port terminated (75-ohm termination included), so both antennas share a common feedline. Applying a negative 10 to 18V DC to the feedline switches the system between the two antenna ports for reception in opposite directions. For simultaneous reception from opposing directions, each of the two feedlines can be run to separate receivers, with the termination load not used. You can build a 4-direction receive antenna system with two DXE-RBSA-1P Reversible Beverage Systems and one DX Engineering RLS-2 Two-Port Receiving Switch that also requires only one feedline! The optional DX Engineering Feedline Voltage Coupler, model DXE-FVC-1 is highly recommended to provide all of the required feedline voltage injection. Plus, the optional DXE-EC-4 BCD Control Console completes the system for four-direction switching right in the shack. DX Engineering Reversible Beverage Systems are optimized to use our optional 450 ohm ladder line for the antenna element. We strongly recommend using that type of "window line" because the consistent spacing of the antenna wires will produce the best operational results. However, the RBS will work with any 300-600 ohm 2-wire line. For best feed line results, DX Engineering highly recommends using our high quality flooded or quad-shielded 75-ohm coax with F-type compression connectors to ensure a weatherproof installation. Additional features include: * Broad operating range, 0.2 to 30 MHz * Fully isolated grounds prevent common-made noise and unwanted signals * 75 ohm design enables the use of high quality, low cost cable and connectors * RF shielded housing used for isolation and improved life * Directional Switching Voltage: nominal 12V AC or negative 12V DC, feedline injected * Directional Switching Current: less than 80 mA * Antenna impedance: 300-600 ohm (450 ohm recommended) * Feedline impedance: 50-75 ohm (75 ohm recommended) * RBSA-1FP Feed Point unit dimensions: 5.5 in. width x 3.5 in. depth x 1.5 in. height * RBS-1RT Reflection Transformer unit dimensions: 2.125 in. width x 2.125 in. depth x 1.125 in. height Note: Whenever the DX Engineering "Documentation" tab is available, please look at the associated files for additional product information. DX Engineering Reversible Beverage Systems offer the best DX reception and flexibility in high performance two-direction wire Beverage receive antennas. Get yours set up soon!
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$335.98
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 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!
Not Yet Reviewed
$353.99
DX Engineering Reversible Beverage Antenna System Combos
DX Engineering Reversible Beverage Antenna System Combos allow two Beverage antennas to be switched to receive in opposite directions while sharing the same physical space. These exciting new reversible Beverage combos include DX Engineering's superb receive preamp! Dramatically improved weak signal results can be achieved on MW, BCB, 160, 80 and 40 meter bands and shortwave bands with receive-only Beverage wire antennas that are typically 350 to 800 feet long, depending upon the lowest band of interest. DX Engineering Reversible Beverage System Combos are immune to the strong signal overload and core saturation common in multi-transmitter contesting environments. Reversible Beverages have two antenna F connectors; one "Away" port for the default end-fire receiving pattern off the end of the wire, and one "Toward" port for the opposite direction. Applying a negative 10 to 18 V DC to the feedline switches the system between the two antenna ports for reception in opposite directions. You can build a 4-direction receive antenna system with two reversible Beverage systems and one DX Engineering RLS-2 Two-Port Receiving Switch that also requires only one feedline! The optional DX Engineering Feedline Voltage Coupler, model DXE-FVC-1 is highly recommended to provide all of the required feedline voltage injection. Plus, the optional DXE-EC-4 BCD Control Console completes the system for four-direction switching right in the shack. These RBS systems will work with any 300-600 ohm 2-wire line. For best low-loss low-noise results, use DX Engineering flooded or quad-shielded 75-ohm coax; with our F-type compression connectors to ensure a weatherproof installation. DX Engineering RPA-1 Receive Preamplifiers use RCA-type phono jacks and CATV Type-F female connectors for the input and output connections to prevent accidental connection to transmitting devices. RPA-1 Receive Preamplifiers feature a built-in relay that automatically bypasses the preamplifier circuit when DC power is removed. These high performance devices must be powered with a well filtered and regulated DC power supply and will offer maximum performance at 12 to 18 V DC input. Details for DX Engineering Reversible Beverage Antenna System Combos: Receive preamp: * Gain: 16 dB, +/- 1.5 dB, from 300 kHz through 35 MHz * Dynamic range (IM3) at 500 Hz BW: 110 dB or greater * Output Third Order Intercept: +43 dBm * Noise figure: 3.5 dB * Compression: 1 dB at +26 dBm (nominally 0.4 W output) * Power requirement: 12-18 V DC at 140 mA maximum * Power Input: 2.1 mm DC coaxial power connector Reversible Beverage transformer features: * Broad operating range, 0.2 to 30 MHz * Fully isolated grounds prevent common-made noise and unwanted signals * 75 ohm design enables the use of high quality, low cost cable and connectors * RF shielded housing used for isolation and improved life * Directional Switching Voltage: nominal 12 V AC or negative 12 V DC, feedline injected * Directional Switching Current: less than 80 mA * Antenna impedance: 300-600 ohm (450 ohm recommended) * Feedline impedance: 50-75 ohm (75 ohm recommended) * RBSA-1FP Feed Point unit dimensions: 5.5 in. width x 3.5 in. depth x 1.5 in. height * RBS-1RT Reflection Transformer unit dimensions: 2.125 in. width x 2.125 in. depth x 1.125 in. height Note: Whenever the DX Engineering "Documentation" tab is available, please look at the associated files for additional product information. DX Engineering Reversible Beverage Antenna System Combos offer package convenience and superior receiving results on today's crowded medium and shortwave bands as well as on the ham bands. SWLs and Radio Amateurs around the world have come to rely on the exceptional performance of DX Engineering products. Order one of these DX Engineering Reversible Beverage Antenna System Combos to make the best of your MW/HF reception!
Not Yet Reviewed
$605.97
YCCC Receive Feedline Choke Kits
Closeout- Other YCCC array components are no longer available YCCC Receive Feedline Choke Kits prevent common-mode noise or unwanted signal intrusion on the feed lines of YCCC Receive Vertical Array Kits. These choke kits are the same as provided in the array kit packages and may be used as replacements or in other applications. Component-level assembly of these kits is required. A choke enclosure is user supplied. Their function is to provide isolation between the input and output coaxial shield connections, while passing desired receive or control signals. Their isolation impedance blocks common-mode noise or unwanted signals. YCCC Receive Feedline Choke Kits are supplied with standard "F" female connectors to prevent connection to transmitting equipment. All inquiries and technical support for the discontinued YCCC kits and kit packages is handled by e-mail only, typically within two to three business days: yccctechsupport@verizon.net
Not Yet Reviewed
$22.00
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
QRO.cz Bias Tee Receive Feedline Voltage Injectors
QRO.cz Bias Tee Receive Feedline Voltage Injectors are engineered to inject DC voltage into a receive antenna system's coaxial cable while isolating the radio port from DC current. This allows you to power remote devices—such as preamplifiers, relays, or switching systems—without the need for separate power lines, simplifying your installation by combining RF and DC over a single coaxial feed. Typically installed at the receiving end of the coaxial cable, the bias tee passes DC power from an external source to the coax line running to the powered device. It uses a feed inductor to deliver DC to the device side and a blocking capacitor to prevent DC from reaching the radio. For added flexibility, bias tees can be used on both ends of the coaxial line to serve as DC input and output points.
Not Yet Reviewed
$93.99
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
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 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 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