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10 Results Found For "Receive Preamplifier"
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
DX Engineering Plug-in Modules
A new series of Plug-in Modules are available specifically for new DX Engineering devices that accept them. Details on each module are found at each part. DX Engineering Plug-in Modules include: * DXE-RPA-2-PM Receive Preamplifier Plug-in Modules * DXE-RG5000HD-PM Receiver Guard 5000HD Plug-in Modules *DXE-IT-PM 75 to 50 ohm Impedance Transformer Modules Modules for High Pass and Band Pass Filter Plug-in Modules are coming in 2017. These new Plug-in Modules are optional devices for the following new DX Engineering devices: * DXE-NCC-2 Receive Antenna Phasing Systems * DXE-RPA-2 Modular Receive Preamplifiers * DXE-RTR-2 Modular Receive-Transmit Interfaces * DXE-DMC-2 Dual Module Chassis Note: Whenever the DX Engineering "Documentation" tab is available, please look at the associated files for additional product information. Discover new ways to equip your world-class station with DX Engineering Plug-in Modules for your DX Engineering devices. Click below on More Details to learn more!
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$35.99
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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$21.99
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$44.99
ARRL Receiving Antennas for the Radio Amateur
"Transmitting and receiving antennas have different jobs to do." Although the fundamental characteristics of antennas apply to both transmission and reception, the requirements and priorities of receiving antennas can be vastly different from those of transmitting antennas. "Receiving Antennas for the Radio Amateur" focuses entirely on active and passive receiving antennas and their associated circuits. There are relatively few cases where a radio amateur cannot benefit from a separate, well-designed receiving antenna or antenna system. On the low bands, including our new allocations at 630 and 2,200 meters, heavy emphasis on the receiving end of these radio paths is essential for success. The active antenna holds a prominent position in this book, as it offers good receiving performance while taking up minimal space. Recent developments in radio frequency (RF) semiconductors, especially low-noise RF operational amplifiers, have made a number of previously difficult-to-implement active antenna designs a very simple task. Table of Contents: * Receiving Antennas are Different! * Your Friend, the Decibel * The Preamplifier Problem * The Amazing Disappearing Antenna * The Receiving Antenna as a Signal Generator * The Quest for Infinite Power Gain * The Role of the Resistor in the Receiving Antenna * The Small Loop Antenna * Achieving the Perfect Null * You Can Make Accurate Field Strength Measurements * The Aperiodic Loop * The Q Factor * The Beverage: In a Class of Its Own * Dealing with Non-Reciprocal Propagation * The Evolution of the eXOgon Antenna * The Lowdown on LF * The Random Wire * Arrays and Beamforming Networks * Powering Your Active Antenna * Diversity Methods * NVIS Receiving Antennas * Receiving Antenna Projects and Accessories * Materials and Construction Techniques * Our Two New Bands
Not Yet Reviewed
$27.95
DX Engineering RF Attenuators
DX Engineering RF Attenuators are used inline with receiving equipment for testing purposes. An inline attenuator will limit the RF input to preamplifier to prevent overload or be used to pad the output of a high gain preamp to an appropriate level. Adding an inline attenuator to a receiver input allows determination of accuracy of s-meter readings on transceivers with a constant RF input signal source. Sometimes, the level of low power RF equipment needs to be reduced for measurement or to obtain the proper input level to an amplification device, such as with QRP equipment. Specifications of impedance, attenuation, power handling and connectors appear on the part number description. Order inline RF Attenuators for your test bench or shack from DX Engineering.
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$45.99
DX Engineering MBS-4 Multi-Band Splitters
As opposed to standard four-port splitters, DX Engineering MBS-4 Multi-Band Splitters have been specially designed to pass signals from the bottom of the AM broadcast band (500 kHz) to beyond the top of the satellite radio band (2.4 GHz) and do it with low-loss. With such a wide pass-band they are very useful for implementing whole-house and commercial RF distribution networks supplying signals that are used in all types of entertainment systems. These signals could include AM/FM HD radio, VHF/UHF digital television, satellite radio and Wi-Fi. ANY signal frequency within the pass-band may be split to multiple locations! DXE-MBS-4 splitters are also designed to pass DC between their input and one of the output ports via protection diodes that prevent DC feedback. This allows powered amplifiers and antennas to receive power-feed through the splitters. RF insertion loss for these splitters is up to 12-dB. However, they may be used in tandem with wideband preamps to implement a lossless system! These splitters are not recommended for use in stand-alone satellite radio splitter configurations without additional external amplification and DC impedance terminations of unused ports. Whether you are wiring a living room, den, bedroom and sunroom, or a building with multiple offices, these DX Engineering MBS-4 Multi-Band Splitters are at the core of your signal-distribution network!
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$31.99
Amsats and Hamsats
"Amsats and Hamsats" is simply the most comprehensive guide available on how you communicate through amateur radio satellites—and how to receive signals from other small satellites and 'weather' satellites. Written by best-selling amateur radio author Andrew Barron, ZL3DW, here's the answer to everything you wanted to know about this exciting world of satellites. The 368-page paperback begins by answering questions like, 'how do satellites stay in orbit' and 'why are they so expensive to launch?' … before moving onto sections about the history of amateur radio satellites, the mathematics governing orbits, different types of satellites and their orbits. It covers the equipment you need to track and use the amateur satellites and some of the satellite-tracking software that's available. There are detailed sections covering feeders, masthead preamplifiers, antenna systems, and automated rotator control. You'll read details about FUN cube Satellites, Weather Satellites and even the International Space Station. If you want to know the art of the possible and what satellites are available, where they are, new ones that are planned, and even the bands you can operate, "Amsats and Hamsats" has the answers. There's much more included, as this book provides the ultimate guide to operating satellites.
Not Yet Reviewed
$24.99
Microwave Projects 2
Following the huge success of "Microwave Projects," Andy Barter, G8ATD brings you more innovative projects from around the world. If you're interested in building equipment for the amateur radio microwave bands, the designs in this sequel are sure to please you. Projects have been selected from international authors—and all of the projects use modern techniques and up-to-date components. Details of how to obtain ready-made boards are included with most projects. The 216-page paperback includes chapters covering: * Transverters and transmitters, including two new transverter designs for 23cm and 13cm, plus an ATV transmitter for 3cm * Receive amplifiers, including preamplifiers for 23cm, 13cm, 6cm and 3cm * Power amplifiers, including a detailed design for a valve amplifier for 23cm, plus solid-state amplifiers for 23cm, 6cm, 3cm, 24GHz and 76GHz * Filters, including detailed design technique for coaxial and stripline low pass filters * Miscellaneous, including rare articles on using YIG oscillators and microwave absorbers If you're interested the microwave bands or just in amateur radio construction, "Microwave Projects 2" provides great ideas and projects to satisfy everyone.
Not Yet Reviewed
$25.99
I0JXX BOX00JXX Mast Mount Project Boxes
I0JXX BOX00JXX Mast Mount Project Boxes are very useful for the VHF, UHF and SHF enthusiast or experimenter. These weather and UV resistant black polyamide thermoplastic enclosures feature a drip edge around a rugged, downward facing 12 ga. aluminum panel (thickness of 2mm) that is approximately 3.75 x 2.75 in.. This blank plate allows for customization of connector placement by drilling or punching holes only as needed. Used by I0JXX for their high quality mast-mounted preamplifiers, the 5.71 in tall enclosure secures with four stainless screws to the panel, which also features an integral bracket and included stainless steel hardware and mounting clamps for masts up to 2.32 in. (60 mm). Building your own specialized mast-mounted device such as a preamplifier and Receive-Transmit relay into a weather protected enclosure is simplified with economical I0JXX BOX00JXX Mast Mount Project Boxes – ready to keep the weather away from your ingenious tower-top device. See the product details for specifications.
Not Yet Reviewed
$38.99