Availability
77 Results Found For "noise"
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.
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$229.99
West Mountain Radio ClearSpeech DSP Noise Reduction Speakers
West Mountain Radio ClearSpeech DSP Noise Reduction Speakers contain West Mountain's ClearSpeech noise reduction circuit and an audio amplifier. They are extremely effective in improving communication clarity, making mobile and base operation less fatiguing and more fun. These speakers may be mounted in any location—they can rest on a tabletop or mount to any surface. Their included mounting bracket has two holes for mounting, and side-located adjustment knobs permit tilt aiming. Features include: * Amplified loudspeaker with ClearSpeech adaptive DSP noise reduction for voice and CW * Recognizes intermittent nature of CW and allows it to pass noise-free * Continuously variable adaptive filter noise reduction, 0 bB to -17 dB * Contains a 4 in. loudspeaker with 10 watt amplifier * Volume control knob for adjustment of internal speaker sound level * Front mounted 1/8 in. stereo output jack for powered speakers or 16 ohm or higher headphones * On/off switch with green indicator LED * LED flashes red to indicate digital overload clipping * Small, lightweight; includes mounting bracket * Powerpole equipped cable plugs into any 12 V supply Note: Whenever the DX Engineering "Documentation" tab is available, please look at the associated files for additional product information. Why not combine DSP with a high-quality communications speaker? Order West Mountain Radio ClearSpeech DSP Noise Reduction Speakers from DX Engineering to hear the difference DSP technology can make!
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$219.95
bhi NCH-W Wireless Noise Cancelling Headphones
bhi NCH-W Wireless Noise Cancelling Headphones are designed to enhance your listening experience by reducing external ambient background noise. This noise cancelling technology can attenuate the outside noises by 18 to 25dB of volume. Whether you're on a train, airplane, or in a noisy office or home environment, these over-ear headphones provide a more enjoyable audio experience. With its built-in Bluetooth v5.0 wireless and up to 8 hours of battery life per charge, you can stay connected anytime with a wireless range of up to 32 ft. (10 meters). The adjustable headband and high-quality, durable ear pads ensure comfort. Additionally, you have complete control over power, volume, noise cancellation and phone calls. The NCH-W Wireless Noise Cancelling Headphones feature a smooth sound performance you will enjoy and make a great choice for any setting.
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$109.99
bhi 5W DSP Noise Cancelling Speaker Retrofit Modules
bhi 5W DSP Noise Cancelling Speaker Retrofit Modules incorporate unique Digital Signal Processing (DSP) technology which can identify speech from within a noisy signal and can provide up to 40 dB of noise reduction over 8 filter levels and 65 dB of tone reduction. Easily retrofitted inside many types of extension speakers or older-style radios and transceivers, these modules come pre-wired and their onboard power amplifier allows them to be easily incorporated into existing equipment.
Not Yet Reviewed
$201.99
West Mountain Radio CLRdsp ClearSpeech® Noise Reduction Processors
West Mountain Radio CLRdsp ClearSpeech® Noise Reduction Processors are designed to be installed between your radio and your favorite passive external speaker or amplified speaker. Complex DSP algorithms filter all of the noise content of the incoming signal and greatly attenuate or completely remove hum, hiss, vehicle ignition, and power line noise, as well as heterodynes. The result: the ability to hear voice and CW audio clearly, with over 85 percent of the noise removed. These units have a convenient volume-control knob that allows a user to adjust the speaker audio level for comfortable listening. This allows the radio's AF Gain control setting to be optimized for other uses, such as interfacing to a West Mountain Radio RIGblaster sound card interface. Features include: * Amplifier for speaker or headphone with volume control * ClearSpeech® adaptive DSP noise reduction for voice and CW * Recognizes intermittent nature of CW and allows it to pass noise-free * Adjustable noise reduction control * Tone control * 11W watt (into 4 ohms) power amplifier * Sturdy aluminum case--ideal for mobile operation, as well as home station * Powerpoles plug into any 12V supply * Plugs into the speaker or headphone output on the radio * 1/8 in. phone jack on rear can drive external 8 or 4 ohm loudspeaker or amplified computer speakers * On/off switch with green indicator LED * Red LED flashes to indicate digital overload clipping Note: Whenever the DX Engineering "Documentation" tab is available, please look at the associated files for additional product information. You've heard about DSP and how it helps to get those DX QSOs in the log book. Now experience it first hand with West Mountain Radio CLRdsp ClearSpeech® Noise Reduction Processors from DX Engineering!
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$219.95
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
bhi Ltd DSP Speakers
bhi Ltd designs and manufactures a range of Digital Signal Processing (DSP) noise cancelation products that remove unwanted background noise and interference from noisy voice and radio communication channels. bhi Ltd DSP Speakers are the absolute best noise elimination speakers currently available! bhi Ltd DSP noise cancelation speakers remove unwanted background noise and interference from noisy voice and radio communication channels to leave clear, intelligible speech and CW signals. Aimed at a number of different radio-related and voice communication markets, bhi products all incorporate unique, patented, DSP technology to enable clear communications in noisy environments. Shop DX Engineering for your bhi products! Their company name is bhi; all lower case. Therefore, bhi Ltd means bhi Limited, a UK business entity. Note: Whenever the DX Engineering "Documentation" tab is available, please look at the associated files for additional product information.
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$207.99
ELAD SP-1B DSP Speakers
ELAD SP-1B DSP Speakers are designed to work with and complement the elegant design of the well-known FDM-DUO SDR transceiver, and the FDM-DUOR-B SDR receiver. This speaker features a built-in active filter that can be activated with a push button. This new "B" model also includes a 5-stage noise reduction function.
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$156.99
DX Engineering Portable Receive Preamplifier-Attenuator
DX Engineering Portable Receive Preamplifier-Attenuator DXE-NL-PRE-ATT-1 – A very handy device to use with your receiver; handheld, portable or base. This attractive, light-weight unit comes completely assembled and tested, and provides a nominal 30 dB gain across the frequency range from 100 kHz through 30 MHz. Powered by an internal 9 volt battery (not included), it features BNC connectors for RF Input and Output, easy to use slide switches and a 'power on' LED when the preamp is on. Attenuation is selected with switches for -10 dB or -20 dB and -30 dB with both. Plus, an AM Broadcast Band Rejection Filter can be switched in or out, as needed. This unit measures 3.25 x 7.00 x 1.00 in. (WHD) and weighs approx. 8.5 oz. with the user supplied 9V battery installed. This preamplifier has a Noise Figure (NF) of 4.5 dB. This Portable Preamplifier-Attenuator is a perfect companion device for use with the DXE-NOISELOOP WD8DSB Portable Receive Flag Antenna Kit, for RFI noise finding and for MW through SW receiving. NOTE: The DXE-NL-PRE-ATT-1 Portable Receive Preamplifier-Attenuator is a Receive Only device. Attempting to transmit RF into this unit will cause damage that is not covered by warranty.
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$175.99
bhi DSP Devices
bhi Ltd designs and manufactures digital signal processing (DSP) noise cancellation products including inline units and modules. They are some of the best electronic noise elimination devices currently available! bhi DSP Devices remove unwanted background noise and interference from noisy voice and radio communication channels to leave clear, intelligible speech. Used in a number of radio-related and voice communication markets, all bhi products incorporate unique, patented DSP technology to enable clear communications in noisy environments. Shop DX Engineering for your bhi products! Their company name is bhi - all lower case. bhi Limited is a UK business entity. Note: Whenever the DX Engineering "Documentation" tab is available, please look at the associated files for additional product information.
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$185.99
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$189.99
On Sale
Heil Sound Microphones
Heil Sound Microphones cover the audio spectrum with models for virtually every Professional and Amateur sound application. Specific Heil microphones are best selected and matched to their intended uses for instruments, drums, and voice. From live music to studio recording, broadcasting, and all types of Amateur Radio operating, Heil microphones have set new standards for audio excellence, providing the clarity and wide-range response that audio and radio professionals require and Amateurs demand. Experience counts in design and implementation, and every unique Heil Microphone brings a significant contribution to the art of audio recording, reproduction, transmission and the Science of Sound. Note: Whenever the DX Engineering "Documentation" tab is available, please look at the associated files for additional product information. "Buy from a name you can trust." That quote is thrown around a lot in advertising. But when it comes to microphone audio, Heil Sound Microphones are, indeed, a name you can trust!
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$129.00
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$229.00
DX Engineering NOISELOOP Portable Receive Flag Antenna Kit
DX Engineering NOISELOOP Portable Receive Flag Antenna Kit is based on the design by Don Kirk, WD8DSB. Don's article on this antenna is published in the March 2021 issue of QST Magazine (used by permission). The DXE-NOISELOOP is a kit of parts to build this receive-only portable directional HF loop antenna, which measures only 48 by 24 inches plus 36 inches of mast-handle. It may be used while walking or stationary with your portable HF receiver. Oriented vertically, this loop antenna features a cardioid pattern at the horizon with a deep null of up to 30 dB rejection. It is an excellent tool for locating noise sources from 1.8 through 30 MHz and for low-noise, general coverage reception from the AM broadcast band through 30 MHz. An optional Preamplifier-Attenuator Unit, DXE-NL-PRE-ATT-1, may be attached to the loop mast handle for enhanced operations. An IC-705, a portable SW or a handheld HF receiver are excellent choices for searching for local noise sources with the NOISELOOP, around the neighborhood and even around your own home. This Portable Flag Antenna Kit includes everything needed to make the antenna: fiberglass tubing for the frame and handle, mounting plate, separate PC boards for the bifilar wound transformer and load resistor, antenna wire, coaxial cable with male BNC and stainless steel hardware. Simple hand tools and a solder iron are required for assembly. Included instructions detail assembly. This kit will typically take between 1 and 2 hours to build. The WD8DSB Portable Flag Antenna design has become a real game changer in direction finding of RFI on MF and HF frequencies, and you will also find it an invaluable tool when hunting RFI due to the following key features. *Unidirectional (unlike a tuned loop) *Broadband (unlike a tuned loop, excellent for AM DXing, SWL and Amateur) *Portable (easy to walk with while directional noise finding or HF Fox Hunting) Traditionally Flag antennas are large and designed for stationary use, but the idea for this antenna was to design a Portable Flag. It was designed to be the largest possible (to maximize gain) that would fit inside a car and it's still small enough to maintain a cardioid pattern up through 30 MHz. The portable Flag has an approximate dimension of 2 feet tall by 4 feet long which you (or a helper) can easily walk with while tracking down a signal. Unlike a tuned loop, the Portable Flag is a broadband antenna with unidirectional properties, and it's designed for direction finding from 1.8 to 30 MHz as long as an appropriate preamp is used. It's even useful for direction finding down in the AM broadcast band. The rear of the antenna produces a sharp null when pointed at the signal of interest and the sharp null is often used for direction finding versus using the broad peak which occurs when the front of the antenna is pointed at the signal of interest. Learn more about how to build this antenna kit by clicking on More Detail and the Documentation link for the Instruction Manual. Order your DX Engineering NOISELOOP Portable Receive Flag Antenna Kit here.
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$159.99
PolyPhaser Coaxial Lightning Protectors
PolyPhaser Coaxial Lightning Protectors are designed for general, single-transmitter use in the 1.5 to 700 MHz frequency range. PolyPhaser protectors are available in two mounting styles: "Bulkhead Mount" protectors have a longer connector and hardware to mount it through the grounding panel. "Flange Mount" protectors anchor to a grounding panel with both connectors parallel to a flat surface. PolyPhaser Coaxial Lightning Protectors use a DC blocked specially configured gas tube design that has no DC continuity between the two center pins. PolyPhaser's multi-strike products are designed to pass RF frequencies and block all DC. These protectors appear as a DC open between surge and protected ports and offer industry-standard protection. PolyPhaser protectors are suitable for all types of antennas, even "floating" antennas that are not DC grounded. With PolyPhaser DC Blocked protectors, any slow voltage build up from wind driven rain, snow or dust, will not get to the equipment. As the protector reaches threshold for turn-on in a dc blocked circuit, it will go into a momentary soft turn-on as the gas barely ionizes and bleeds the static charge to ground. This does not create noise since it will not get to the arc mode and lasts only a short time. PolyPhaser protection devices have been chosen and specified by communications systems engineers and technicians for 24/7 service in broadcasting, commercial, military and government installations. Note: Whenever the DX Engineering "Documentation" tab is available, please look at the associated files for additional product information. Trusted by Amateur Radio operators for over 40 years, PolyPhaser Coaxial Lightning Protectors are ready for your antenna system installations. They are available here, at DX Engineering.
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$105.99
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$161.99
Samlex Desktop Switching Power Supplies
These high-efficiency Samlex Desktop Switching Power Supplies provide an extremely well-regulated DC output voltage of 13.8 Volts. Long gone are the days of RF noise producing switching supplies. Samlex advanced switch-mode DC power supplies were specifically designed for use with land mobile radio, and now find use in many Amateur Radio, electronics, hobby, broadcasting and commercial applications. They produce clean, reliable power and are extremely well filtered to suppress unwanted noise and RFI. Samlex Desktop Switching Power Supplies are small and light weight. Safety features include over-current, short-circuit, and over-voltage protection. 120 Vac models have also earned FCC compliance and UL listing to both USA and Canadian safety standards. 230 Vac models have European certification and are RoHS compliant. The model SEC-1235P-M is a universal input model, 100-240 VAC, 50-60 Hz, and 13.8 VDC, 30A continuous output with backlit front panel meters. Note: For additional product information, please look at the files under the "Documentation" tab. When you consider purchasing a new desktop supply, contact DX Engineering for one of these high-quality Samlex Desktop Switching Power Supplies!
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$155.30
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$247.00
On Sale
Alinco DM-30 Digital Power Supplies
Alinco DM-30 Digital Power Supplies are an affordable switching power supply that packs a lot of features, including Anderson Powerpole connectors. They are an ultra-compact, lightweight design that supports 9-15 V DC variable output and delivers up to 30A peak power to 2-way radio communication products. Alinco DM-30 power supplies are available for 120 V AC input as their DM-30TR or for 230 V AC input as their DM-30ER (E for Europe). A convenient feature for Amateur Radio users: an adjustable Noise Offset Circuit moves unwanted switching noise to another frequency. Other features include: a large illuminated digital Volt/Amp meter, a pair of rear panel binding posts (30A peak), front panel Anderson Powerpole connectors (two pairs 5A peak), switch-selected voltage adjust (9-15 V) or fixed at 13.8 V, ripple less than 80mVp-p and triple circuit protection for short-circuit, over temperature, and current limiting. Alinco DM-30 Digital Power Supply features: * A highly visible, accurate digital Volt / Amp meter allows real-time monitoring of the output current * Two pairs of Anderson Powerpole connectors on the front panel (DM-30TR) add extra versatility * A pair of Banana Jack connectors on the front panel (DM-30ER) adds extra versatility * The Noise Offset Circuit moves unwanted switching noise to another frequency * Designed with reliability in mind, a durable cooling fan keeps DM-30 running continuously under heavy loads * Rear output terminals are large and provide an efficient Max 30A power transfer to your equipment Alinco DM-30 specifications: * Input voltage: 120 V AC 50/60Hz (DM-30TR) * Input voltage: 230 V AC (DM-30ER) * Output voltage: 9 to 15 V DC variable or select voltage fixed at 13.8 V * Output current 20A continuous at 13.8 V DC * 30A max (50 percent duty cycle, 1-minute intervals) * Output voltage regulation: Less than 2 percent variance to full load * Ripple voltage: Less than 80mVp-p * Protection: Over current, over temperature, and short circuit * Fuse protection: DM-30TR, 8A (DM-30ER, 5A) * Dimensions: (W x H x D) 6.10 x 2.80 x 8.07 in. (155 x 75 x 205 mm) * Weight: Approximately 3.53 lbs. (1.6kg) with AC cord Note: For additional product information, please look at the files under the "Documentation" tab. Alinco power supplies offer good value for your ham-radio dollar. Why not upgrade to a switching power supply specifically designed for Amateur Radio? Order Alinco DM-30 Digital Power Supplies from DX Engineering to add versatility, convenience and quality to your shack's DC power!
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$145.95
$134.95
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
Heil Sound Pro Set Elite Headsets
Heil Sound Pro Set Elite Headsets are the ultimate boom-mic headsets designed for Amateur Radio operators using the Heil HC 6 wide-response microphone element. The microphone technology of the Heil HC 6 is designed for full-range commercial AM or FM network broadcasts, or it may be adjusted for bright, articulate audio to cut through Amateur Radio noise and signal pileups. Pro Set Elite headsets contain specially-designed high-performance dynamic elements that compliment advanced audio adjustability of modern Amateur Radio transceivers. The -3 dB points are fixed at 80 Hz and 12.5 kHz. Pro Set Elite Headsets offer round, over-the-ear cushioned pads with highly efficient speakers mounted in acoustically-tuned chambers. They seal the ears into their chamber and facilitate a high rejection of outside noise. An exclusive Heil phase-reversal switch allows the user to move the signal acoustically, which creates a spatial widening of the sound field. That makes it easier to 'see' a signal inside of a pileup while helping to remove listener fatigue during prolonged use. The headphone's speakers fold up for easy transportation and storage. Field-replaceable cushioned ear pads also come with cotton covers that can be easily removed for washing. Their 6 ft. coiled cable terminates in a 1/8 in. mono plug for the microphone and a stereo 1/8 in. plug for the headphone speaker connection. A 1/8 in. to 1/4 in. headphone jack adapter is also supplied. Note: Whenever the DX Engineering "Documentation" tab is available, please look at the associated files for additional product information. Pro Set Elite Headsets work with all Heil AD-1 adapter cables, which mate with just about every type of amateur radio transceiver. Purchase an AD-1 series Headset Adapter Cable (sold separately) for a simple connection to the transceiver mic input. The adapter is 6 in. long and has a 1/8 in. female input jack for the headset boom microphone and a 1/4 in. female for the PTT (push to talk) line for the Heil foot or hand switch. The headset stereo plug goes into the headphone jack on the transceiver front panel. You deserve the quality and versatility of superior headsets. Heil Sound Pro Set Elite Headsets from DX Engineering will help you log the rare ones!
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$229.00
On Sale
Alinco DM-530T Digital Power Supplies
Alinco DM-530T Digital Power Supplies pack a lot of features into an affordable communications-grade package. The output voltage of the DM-530T switching power supply is adjustable from 5-15VDC, or 13.8VDC fixed and can deliver up to 30A max current. Built-in triple circuit protections exist for short-circuit, over temperature and current limiting. The Noise Offset Circuit helps to reject switching-noise on the receive frequency by moving unwanted switching noise to another frequency. The large, highly visible and accurate digital Volt/Amp meter allows effortless real-time monitoring of output current. Other features of the Alinco DM-530T include: * Auxiliary 30A Output Terminals and USB Ports - Added front panel Anderson Power Pole ® terminals and USB ports provide versatile, quick connections. * Large Binding Posts - The main output terminals are large enough to provide an efficient power transfer to your equipment * Forced Air Cooling - Designed with reliability in mind, a durable cooling fan keeps DM-530 running continuously under heavy loads.
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$239.95
$229.95
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
Yaesu M-90D Desktop Microphones
Yaesu M-90D Desktop Microphones utilize a finely tuned dynamic element to deliver rich low to mid frequency response, desirable for a clear and concise conversational sound that is pleasing to the ear of the listener. The oversize dynamic microphone element and windscreen of the M-90D is designed to accentuate voice input from the front and limit ambient noise and sounds from the side. The attractive desk stand base of the M-90D features a large PTT bar switch, a PTT lock button, and both 8-pin modular and round connectors at the back. By swapping the orientation of the supplied coiled cord cable with 8-pin round and modular connectors at either end, the M-90D may be used with virtually any Yaesu HF transceiver*. For difficult band conditions, a built-in, low-cut filter creates clear and crisp audio characteristics by shaping the low frequency response (cut off at 340Hz, -6dB/octave). An integrated isolation transformer enhances the audio quality of this fine microphone, which also uses three air cylinder tubes, similar to the M-1 Reference Microphone, to provide a lifetime of solid, smooth, and noiseless PTT operation. Yaesu M-90D Desktop Microphone specifications: Microphone type: Dynamic element, preamplified Supply voltage: 5.0 V DC ±10 percent (supplied by most Yaesu transceiver mic connectors*) Frequency response: 30 to 17000 Hz Sensitivity: -60 dB (1 kHz 0 dB=1V/1Pa) Microphone impedance: 600 ohms Dimensions (WHD): 4.17 x 7.56 x 4.98 in. (106 x 192 x 126.5mm) Height maximum when microphone head position is flat Weight: 18.70 oz. (530 g) without cable NOTE: The M-90D Mic head does not disconnect from the desk stand base for other uses. (See M-90MS Mic Head for boom or mic stand applications.) The M-90D is directly compatible with the FTDX101 Series, FTDX10, FT-991A, FT-891, FTDX5000 Series, FTDX3000/D, FTDX1200, FTDX9000 Series, FTDX2000/D, FT-950, FT-450/D, FT-897/D, FT-857/D, FT-818ND, FT-817/ND, FT-900, FT-847, FT-920, FT-1000MP, FT-1000MP MARK-V and FT-1000MP MARK-V Field. *Optional Power Supply Kit ABB19X001 required for M-90D use with Legacy Yaesu FT-1000/D, FT-990, FT-890, FT-840 and FT-747 transceivers.
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$199.99
Heil Sound Pro Set Elite iC Headsets
Heil Sound Pro Set Elite iC Headsets are excellent boom-mic headsets are designed for Amateur Radio operators using a transceiver that can benefit from the use of a high energy electret element . The new technology of the Heil IC element is designed for full-range commercial AM or FM network broadcasts or can be adjusted for bright, articulate audio to cut through Amateur Radio noise and signal pileups. Pro Set Elite iC headsets contain the special high performance electret condenser, which was designed for the low-level mic inputs used in many ICOM Amateur Radio transceivers. Their -3 dB points are fixed at 80 Hz and 12.5 kHz. The iC electret element requires +5V DC phantom power, which all ICOM rigs provide. Pro Set Elite iC headsets offer dual side, highly efficient speakers mounted in acoustically tuned chambers, the isolation of which produce a high rejection of outside noise. An exclusive Heil phase reversal switch allows the user to move the signal acoustically, which creates a spatial widening of the sound field. That makes it easier to 'see' a signal inside of a pileup, while removing listener fatigue during prolonged use. Pro Set Elite speakers fold up for easy transportation and storage. Field-replaceable cushioned ear pads also come with cotton covers that can be easily removed for washing. Their 6 ft. coiled cable terminates in a 1/8 in. mono plug for the microphone and a stereo 1/8 in. plug for the headphone speaker connection. A 1/8 in. to 1/4 in. headphone jack adapter is also supplied. Purchase an AD-1 series Headset Adapter Cable (sold separately) for a simple connection to the transceiver mic input. The adapter is 6 in. long and has a 1/8 in. female input jack for the headset boom microphone and a 1/4 in. female for the PTT (push to talk) line for the Heil foot or hand switch. The headset stereo plug goes into the headphone jack on the transceiver front panel. Note: Whenever the DX Engineering "Documentation" tab is available, please look at the associated files for additional product information. Give your ICOM transceiver the quality headset it deserves. Order Heil Sound Pro Set Elite iC Headsets from DX Engineering to improve your TX and RX audio!
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$229.00
COMTEK Current Feedline Chokes
The updated COMTEK CFC-50A 50 ohm Feedline Chokes consist of 75 heavy-duty mix-31 RF choke beads on a length of RG400 PTFE coax terminated at both ends with silver-plated PTFE PL-259/UHF male connectors and the correct length of heat-shrink tubing. COMTEK Current Feedline Chokes ensure that stray RF does not flow on the outside shield of your feedlines. They are typically installed at the antenna feedpoint connection. They may also be used where a long run of feedline leaves a remote antenna switch or a tower. They are also very effective at the shack end of a long run of on-the-ground or above-ground coaxial feedline, to block unwanted RF signals and noise picked up on the shield. These chokes provide excellent common mode impedance and handle up to 5 kW from 1.8 to 54 MHz. These chokes are assembled except for the tubing needs to be installed and heat-shrinked after the choke is positioned as it will be installed.
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$131.49
Heil Sound Professional Headphones
Heil Sound Pro Set 3 Professional Headphones set a new standard for exceptional articulation and clarity, with beautiful sonic accuracy in a closed back, lightweight headset. Incredibly versatile, these excellent stereo headphones are perfect for virtually any audio monitoring - in recording and broadcast studios, amateur radio stations, for short wave listening, podcasting, and for private listening of personal audio devices, stereo systems, and computer sound outputs. The HEIL Pro Set 3 features high quality 40 mm neodymium magnets and voice coils, lightweight, ergonomically designed cushioned headband adjustable for maximum comfort while significantly reducing outside noise. Supplied with two detachable cables, a 70 in. (1.8 M) flexible straight cable and a 39 in. (3 M) coil cord - all twist lock terminating in a 1/8" (3.5 mm) with a professional gold plated screw-on 1/4" (6.3mm) adapter. Heil Sound Pro Set 3 Professional Headphones feature: -- 10 Hz - 22 kHz extended frequency response for exceptional clear, balanced sound reproduction -- Convenient folding construction for compact transport and storage -- Ergonomic design with soft, adjustable cushioned headband. -- Serious acoustical outside noise reduction -- Mid-size design with internal steel headband -- Soft padded, replaceable ear cushions -- Three twist lock detachable cables -- Gold-plated stereo and screw-on 1/4" adapter Order the new standard in headphones from DX Engineering today! Get the Heil Sound Pro Set 3 Professional Headphones here!
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$159.00
DX Engineering RG-400 High Isolation Coaxial Cable Assemblies
DX Engineering RG-400 High Isolation Coaxial Cable Assemblies bring to your RF systems the same quality and capabilities that are demanded of military and aerospace installations. Here are few reasons why we offer these advanced RG-400 cables for your critical applications: - Extremely high isolation from noise and signals from adjacent cables - Very high power handling - 2.75 kW at 30 MHz - Stranded silver plated copper center conductor for extreme efficiency - PTFE dielectric for exceptional dimensional stability, low loss and very high power handling - Silver plated copper braided double shields for very high isolation - Tough, waterproof fluorinated ethylene propylene (FEP) - MIL-C-17 jacket DX Engineering RG-400 cable assemblies are terminated with the classic silver plated Amphenol 831SP PL-259 and UG-175 reducers or BNC Male connectors. DXE-RG400 is specifically recommended for short length cable assembly use in VHF/UHF duplex repeater applications. RG-400 may be the same size as RG-58A/U, but it is an aerospace-level performance cable with dramatically improved ratings in all categories. NOTE: RG-400 is a 0.195 in. diameter cable. RG-400 is NOT related in any way to DXE-400MAX or LMR-400 cables which are 0.405 in. diameter. Order DX Engineering RG-400 High Isolation Coaxial Cable Assemblies here.
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$101.99
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$141.99