Availability
71 Results Found For "noise"
4O3A NC-1 Noise Canceling Bluetooth Headphones
4O3A NC-1 Noise Canceling Bluetooth Headphones (O3A-4O-NC-HP) feature an amazing range of capabilities: - Crystal Clear Sound — 40mm neodymium drivers ensure the highest quality sound, allowing you to hear even the slightest detail, whether in a contest or while listening to music. The frequency response is flat with a slight boost in the bass area for maximum enjoyment. - Excellent Ambient Noise Canceling — The NC-1 Headphone noise canceling system is top of the line. Using a two microphone system, this is one of the best available on the market. With up to 25dB of noise reduction, experience real silence for the first time in your life! - Bluetooth 5.0 for Android and Apple mobile devices, laptops, tablets, PC and interfaced radios. Even though it's not an essential contesting feature, 4O3A includes the latest Bluetooth 5.0 chipset for listening comfort and mobility. More often than not the modern gadgets lack an Aux connector. . - Long life 750mA rechargeable Li-Ion battery -Includes a zipper case, USB A to USB C charge cable and an extra pair of ear cushions. Note: The MC-1 Boom Mic is an option that is sold separately.
( 1 )
$321.99
4O3A NC-1 Noise Canceling Bluetooth Boom Mic Headsets
4O3A NC-1 Noise Canceling Bluetooth Boom Mic Headsets are top-of-the-line Headphone Boom Microphone combinations that are designed primarily for contesting, but also work perfectly for everyday use. The NC-1 are light and comfortable over-the-ear headphones that makes using them a truly enjoyable experience. With advanced Bluetooth capability, amazing audio reproduction and external and built-in microphones, this is also an excellent multi-purpose headphone for mobile phone and multimedia use. The contesting team at 4O3A in Montenegro couldn't find the perfect headset, so they designed their own. Now sold by DX Engineering as O3A-4O-NC-1, this headset combination consists of two parts, the NC-1 Headphone Set and the MC-1 Boom Mic Set, both available separately. A All features and specs appear on each part detail page. +++ NC-1 Noise Canceling Bluetooth Headphone Set (O3A-4O-NC-HP) - Excellent Ambient Noise Cancelling - Crystal Clear Sound - Bluetooth 5.0 for Android and Apple mobile devices, laptops, tablets, PC and interfaced radios - Long life 750mA rechargeable Li-Ion battery - Includes a zipper case, USB A to USB C charge cable and an extra pair of ear cushions. +++ MC-1 Boom Mic Set (O3A-4O-NC-MC-1) - Versatile affordable plug-in condenser boom mic with universal 3.5mm mic and headphone cables - Works for all transceivers (with optional adapters) and plugs into laptops, tablets and PC - Superior vocal clarity with a wide, flat frequency response - Includes soft case, 3.5mm to 6.35mm adapter and two boom mic windscreens.
( 3 )
$393.98
bhi DSP Noise Cancelling In-Line Modules
bhi DSP Noise Cancelling In-Line Modules eliminate noise and interference to let you hear more clearly! This new audio DSP unit cleans up noisy signals and works on most radios and receivers. It comes with the latest bhi DSP noise cancelling technology—which brings improved audio quality to the listener when operating in noisy conditions across all radio bands. The audio is clearer and more intelligible as a result. It's very easy to connect the In-Line Module between your radio and external speaker with the included 3.5mm male mono patch cable. This model delivers plenty of clean, noise-free audio with its 5W audio amplifier. The speaker output is muted when headphones are connected to the mono headphone output jack. When the unit is switched off, the audio bypass feature routes the signal directly through to the loudspeaker. bhi In-Line Modules provide simple control of all features. Their three-position switch turns the unit on and switches the noise cancellation on and off. The "Status" LED illuminates red when power is applied and changes to green when the noise cancellation is active. Set the radio AF gain to provide an audio input level that does not flash the overload LED. An audio output control adjusts speaker or headphone levels. Also included are a User Manual and four small rubber feet, plus the previously mentioned 3.5mm male mono patch cable for connection to your radio and a fused 2.1mm DC power lead. This unit may be powered by a user-provided 10 to 16V DC power supply or optional wall supply, BHD-PSU12-2A-WW. bhi In-Line Module features and specs: - Eight noise cancelling levels, 8 to 40dB - Tone reduction up to 65dB - 5W audio amplifier - Audio input overload indicator - Status LED indicates power and DSP operation - Audio bypass feature when switched off - Speaker output connection 3.5mm mono jack - Headphone 3.5mm mono jack - DC Input: 2.1mm center positive, requires 10 to16V DC @ 500mA min. - Dimensions, WHD: 5.315 x 2.559 x 1.811 in. (135 x 65 x 46mm) - Weight: 10.6 oz. (0.3kg)
( 13 )
$275.99
West Mountain Radio CLRstereo ClearSpeech® Dual Noise Reduction DSP
West Mountain Radio CLRstereo ClearSpeech® Dual Noise Reduction DSP – an extremely effective tool for improving communication clarity. Dynamic DSP noise reduction adapts to changes in the interference and signal. It passes voice and CW while attenuating atmospheric noise, hum, hiss, whistles, and static. It effectively removes heterodynes, ignition noise, lightning crashes, power line noise. QSO's are more fun without all the background noise. The DSP recognizes the intermittent nature of CW and allows it to pass noise free. CLRstereo features independent "Left" and "Right" channels, each with DSP filter level, Tone and Volume (audio level) controls and a red "CLIP" LED to indicate when that channel input level is too high. Next to the front panel toggle Power switch is a green LED to indicate powered condition. CLRstereo can process two channels simultaneously, for use with two separate radios or with a radio that features two separate receivers, such as Main and SUB. Please note that the CLRstereo does not contain a power amplifier. While the output is sufficient for a headphone or low level speakers, the CLRstereo is intended to be connected to an amplified speaker system. Specification of the CLRstereo ClearSpeech® Dual Noise Reduction Digital Signal Processor: - Enclosure: Metal, powder coat painted - Dimensions (WHD): 7.25 x 1.5 x 3.5 in. - Input: 1/8 in. (3.5 mm) stereo female (TRS) - Output: 1/8 in. (3.5 mm) stereo female (TRS) - Power Input: USB or 2.1 mm, center positive - Power Requirements: USB power or 9 to 15 Vdc, 212 mA typical - Audio Output, max.: 2 V p-p into a high impedance load; 560mVpp into 8 ohm input - Clipping Level: 585 mV p-p (volume control full clockwise) - Noise Reduction: Adaptive, single tone greater than 50 dB
Not Yet Reviewed
$349.95
SSB Electronic LNA Series Low-Noise Preamplifiers
SSB Electronic LNA Series Low-Noise Preamplifiers are newly developed low-noise receiving amplifiers for the 6m, 2m and 70cm bands, featuring super low noise with high gain, making them ideal for use in EME (moon bounce), MS (meteor scatter), Aurora and tropo-DX operations. High performance is reflected in exceptional IP3 test figures (35dBm, typical), to provide strong signal immunity. Very good rejection of strong signals near and far guarantees interference-free operation, even in the vicinity of other radio transmissions from commercial and broadcast stations as well as mobile carriers. The input circuit of the amplifier is built with high quality components in a chamber construction, optimized for the best noise characteristics. The bandpass at the output of the amplifier ensures very good in-band selection with signals outside the pass band effectively suppressed. The LNA Series Preamplifiers do not have RX/TX relays and are intended for receiving applications. LNA Series Preamplifiers are built in a sturdy tinplate housing, suitable exclusively for indoor applications (Ip41 to DIN EN 60529). Choose between models that have two Type-N female connectors, Type-N Male and Female, and SMA female. These amplifiers can be powered via an external cable or via a coaxial bias tee (remote power supply). The -MA weatherproof variant of the receive-only LNA series is characterized by a robust, IP44-protected housing, allowing the high-quality preamplifier to be mast-mounted close to the antenna using Type-N connectors only. Power is supplied exclusively over the coax. If your receiver does not output 12-15 VDC receive preamplifier power onto the antenna feedline, use the SSB Electronic DCC-5000PRO Bias Tee (remote power inserter).
Not Yet Reviewed
$316.99
—
$494.99
SSB Electronic LNA-30 Broadband 5 kHz – 30 MHz Low Noise Mast-Mount Preamplifiers
SSB Electronic LNA-30 Broadband 5 kHz – 30 MHz Low Noise Mast-Mount Preamplifiers cover the VLF, LF, and MF range, including the 2200 through 10 meter Amateur bands. Only for receiving applications, the LNA-30 is used to transform a simple wire or small whip antenna into a powerful broadband receiving antenna. This allows, for example, an SDR receiver to be operated in an unfavorable location with limited space and still deliver very good results. A skimmer or The LNA-30 amplifies the signals received by about 20 dB. The operating power can be varied for effect from 12 and 24V, with higher gain achieved at 24V, but the lowest figure at 12V. A very RF quiet, well filtered linear power supply should be used, not a switching power supply, which connects to this mast-mounted preamplifier via a separate coaxial cable; a UHF female handles the power input. The LNA-30 handles the RF separately with Type-N female connectors for antenna and receiver. When power is removed the preamplifier turns of and no signal from the antenna passes, making this an "always on" broadband preamplifier. The LNA-30 may be mounted on masts up to 2.25 in. (58mm), is weatherproof, and should be placed outside, close to the receive antenna. This preamplifier cannot pass RF power and is not suitable for transmitting operations.
Not Yet Reviewed
$429.99
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.
( 50 )
$289.99
—
$291.99
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!
( 9 )
$275.99
—
$464.45
STAMPFL HAM Electronics VT5-S Active HF Receiver Multicouplers
STAMPFL HAM Electronics VT5-S Active HF Receiver Multicouplers were developed according to a design by Günter Fred Mandel DL4ZAO especially for SWL (Shortwave Listener) covering 9 kHz to 52 MHz. The VT-5S distributes a single near zero-Ohm star point (HF antenna input) to five outputs with a passive distribution network. This decoupling of the individual outputs prevents connected devices from influencing each other without level losses using a low-noise, high-dynamic RF amplifier and a push-pull output stage. These HF Multicouplers ensure high signal stability, minimal self-noise, and strong isolation between outputs. Additional protections include ESD protection on the input and short-circuit protection for the bias-T, which can remotely power active antennas. The VT5-S Multicoupler is designed to supply an external stabilized DC voltage . With an operating voltage in the range of 11.7 to 15VDC. The DC voltage must be free of hum and noise. The current consumption is approx. 150mA (at 13.8VDC). The DC supply is connected via a center positive 2.1mm ID (5.5mm OD) DC barrel plug. With its compact, lightweight design, the VT5-S delivers reliable performance for professional and hobbyist HF monitoring stations.
Not Yet Reviewed
$309.71
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.
( 59 )
$339.99
SOTAbeams WOLF-100 WOLFWAVE Advanced Audio Processor
SOTAbeams WOLF-100 WOLFWAVE Advanced Audio Processor is a powerful tool for demanding communications applications. Adaptive DSP noise reduction, audio band pass filtering, Morse decoding and automated hearing loss correction are only four of the tasks this incredible device can accomplish. A rotary-encoder, with push-to-set control, accesses adjustments and simple menu system selections on the attractive OLED screen, which also provides a spectral display of the real-time audio passband. WOLFWAVE uses a high performance 32-bit ARM Cortex M7, the highest performance processor of the energy-efficient ARM M-series. This fantastic DSP processing power is paired up with a 20-bit CODEC (analog to digital - digital to analog conversion) and a 1.6 watt amplifier for superb audio performance. So easy to use and so amazing to hear, this in-line audio unit simply connects to the headphone jack of any radio. Connect your headphones or an external speaker to WOLFWAVE and transform your radio listening experience. Here are some of the very useful, menu-selectable functions and features of WOLFWAVE: -Fully adjustable audio band pass filtering from 50 Hz to 5 kHz - instantly adjustable for voice, data and CW -Bright, clear, real-time audio spectrum display to see what's happening in your radio passband -State-of-the-art adaptive DSP noise reduction with 100 levels plus advanced control functions -Morse Decoder – CW Reader added in firmware update – click "More Details" for the WOLFWAVE Firmware page link -Adaptive DSP tone eliminator gets rid of annoying carriers, but leaves the CW -Age-related hearing loss correction using ISO 7029:2017 median hearing-loss curves for males or females – menu selectable -One-touch bypass function to instantly hear the comparison improvement by WOLFWAVE -Memories to easily store and recall your favorite settings -Audio test generator including two-tone test mode, sine, square and triangular wave -Experimental CW regenerator to enjoy noise-free CW QSOs -On-screen help and menu system that is so easy to use -Tuning/Overload dual color LED indicator for easy tuning and input level adjustments -User updatable firmware by USB to keep up with the latest WOLFWAVE developments -Separate speaker and headphone outputs are excellent for exhibition stations -Speaker output: 1.1 Watts @ 10% THD [speaker output must not be grounded -Headphones operation supported with 5Vdc USB power from laptop or USB power pack -Full output power for speaker operation achieved from 7 to 18 Vdc external input -2.1 mm jack for DC power input (13.8 Vdc power supply sold separately) -Low quiescent current drain of only 60 mA; battery-friendly! -Small size (WHD) 4.13 x 3.15 x 1.06 in. (105 x 80 x 27 mm) -Lightweight: 3.5 oz. (140 g) -WOLFWAVE is supplied with one USB A to USB micro-B data power cable and one Audio patch cable with 3.5mm plugs Click "More Detail" for additional information on all of the features of this groundbreaking device. Order your WOLFWAVE Advanced Audio Processor from DX Engineering – the exclusive SOTAbeams North America dealer.
( 11 )
$409.99
InnovAntennas 50-LFA-4-LN 4-Element 50 MHz Yagi
InnovAntennas 50-LFA-4-LN 4-Element 50 MHz Yagi was specifically designed for city use in noisy environments. This Loop-Fed model is optimized for front-to-back performance on relatively short boom of 11.15 ft. (3.40 meters), to reject as much local noise as possible. This antenna offers very good forward gain of 9.4 dBi (14.9 dBi at 10m above ground), and an exceptional 32 dB front-to-back rating, and SWR less than 1.4:1 across the 50-50.5 MHz range. The low profile LFA dipole achieves a significant reduction of noise, allowing clear reception of much weaker signals, a key component of operational improvements and success. The 50-LFA-4-N includes a center mount boom to mast clamp for up to 2 inch masts (50mm) and is a sleek 1.77 sq. ft. wind load, making this beam ideal for typical 6 meter stations. It is also excellent for stacking to maximize gain, especially when available space restricts the use of a longer boom Yagi. It features a 1.25 in. (32mm) 16-guage square aluminum tubing boom for rugged reliability and low weight. This antenna is made with 1/2 inch (12.7mm) element center sections and 3/8 inch (9.525mm) for the outer elements. The antenna has fully insulated elements which will ensure continuous, high performance for many years to come, regardless of the weather conditions. The introduction of the loop-shaped and phase-fed dipole achieves considerably fewer side lobes in the Yagi directional pattern. With less energy absorbed from the sides and from behind, these antennas are quieter than typical 4 element beams to achieve a higher 6 meter performance level. The 50 MHz Monoband LFA Yagis from G0KSC represent a significant advancement in the development of Yagi antennas. They provide a low-noise front-end for your radio, so you hear more signals. This compact 4-element 50 MHz LFA provides stunning performance across the important section of the 6m band, 50.0 - 50.5 MHz. With a direct 50 Ohm feedpoint, no matching losses and suppression of unwanted noise, InnovAntenna 50-LFA-4-N is hard to beat!
( 2 )
$489.99
InnovAntennas 162 MHz AIS LFA Yagis
InnovAntennas 162 MHz AIS LFA Yagis are vertically polarized Loop Fed Array (LFA) beam antennas designed specifically for 161.5 – 162.5 MHz range, featuring simplified installation with integral rear-mount mast brackets. Three models are offered, each performance optimized with extensive computer modeling. High quality materials are used in manufacturing, ensuring durability and high reliability. LFA Yagis inherently receive less ambient noise and are virtually impervious to the detuning effects of rain and ice that render non-loop antennas unusable. Adverse weather conditions and wind speeds of over 124 mph (200 km/h) are no problem for LFA Yagis. They feature a 50-ohm impedance, low-loss type N female connector. LFA antennas handle a maximum transmitter power of 5 kW. AIS is the maritime Automatic Identification System, a radio-based transponder system that automatically tracks and identifies ships at sea by broadcasting their position, speed, course, and other data. Its purpose is to prevent collisions, assist in search and rescue operations, and help vessel traffic services (VTS) monitor traffic. InnovAntennas 162 MHz AIS LFA Yagis are specially designed for professional use at coastal radio stations, for use with AIS repeaters and for suppliers of AIS systems. Of course, they are also ideal for anyone who would like to enter the exciting and fascinating world of AIS reception or take their existing equipment to the next level. Due to their frequency coverage, InnovAntennas 162 MHZ AIS LFA Yagis are also ideal for long range directional reception of the National Weather Service (NWS) NOAA Weather Radio transmitters broadcasting on 162.400 through 162.550 MHz.
Not Yet Reviewed
$305.99
—
$421.99
Clearance
Astron Power Supplies
When you are in need of reliable DC power supply, look no further than Astron Power Supplies. This line of linear DC power supplies are made of heavy-duty, high-quality materials. Astron has your power requirements covered with a wide variety of voltage and amperage outputs and case styles with and without meters. Even their power supplies with only cigarette lighter sockets or with Anderson Powerpoles on the front panel still have DC output terminals on the rear panel. That's convenient! Astron linear-type transformer power supply features include: * Solid state electronically regulated * Fold-back current limiting protects power supply from excessive current and continuous shorted output * Crowbar over voltage protection on all models except RS-3L, RS-4L and RS-5L * Tight regulation and low ripple at low line input voltage * Heavy-duty heat sink (70A models add a low noise fan) * Three conductor power cord * All metered units feature backlit meters At DX Engineering, we bring you only the best - Astron Power Supplies do not disappoint! Performance specifications: * Input Voltage: Most models are built for 105 to 125 VAC input. Some "220" models are built for 210-250 VAC input. * Output Voltage: As Listed * Ripple less than 5 mv peak to peak (full load and low line) At DX Engineering, we bring you only the best - Astron Linear Power Supplies do not disappoint! For reliability and convenience, look to Astron Power Supplies from DX Engineering.
( 128 )
$250.95
—
$419.95
Heil Sound PRO 7 Headsets
Heil Sound PRO 7 Headsets are aviation-style headsets designed for exceptional comfort and performance. A true dual channel, stereo headset, the PRO 7 Series features an audio balance control which allows the user to adjust the level of the left earphone to match the right. A unique phase-reversal switch greatly helps the listener "dig out" weak signals. These headsets will help you work the DX! The flexible gooseneck mic boom on PRO 7s may be rotated for use on either the right or left ear. Two versions are available, depending on whether you require an electret or dynamic microphone element. Heil PRO 7 headsets are available in black, red, and blue. 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. Check out these cutting-edge details: * The most comfortable-to-wear headset…ever * Adjustable stainless steel headband * Specially designed foam-gel ear pads provide 26 dB PNR outside noise reduction - an space set of ear pads are included * Washable cotton cloth 'booties' cover the ear pads * 40 mil high-response speakers produce extremely clear voice articulation * Acoustically dampened speaker enclosure * Negative 3 dB points set at 80 Hz to 12 kHz * Speaker balance control adjusts level between the two speakers * Full Stereo, two channel reception, perfect for Dual-Watch receiving systems * Military spec cable system using 6-pin mini XLR and fiber reinforced cable * Connects to standard Heil headphone adapters * Two types of military grade cables are included: straight and coiled * Detachable cables with comfortable 'Soft Touch' in-line 2 in. diameter PTT * 1 in. thick, 6-section foam headband for maximum comfort * Interchangeable HC 7 dynamic OR Heil iC condenser mic element * Heil's EXCLUSIVE Speaker Phase reversal helps to 'dig out' the weak signals Note: Whenever the DX Engineering "Documentation" tab is available, please look at the associated files for additional product information. Everyone knows about Heil Sound quality. Heil Sound's PRO 7s continue the innovation for which Heil Sound is also world renowned. Order your own Heil Sound PRO 7 Headsets from DX Engineering and enjoy the comfort, quality and features you deserve!
( 105 )
$349.00
Shackmaster Power 600 Compact Desktop Power Supply
Shackmaster Power 600 Compact Desktop Power Supplies from RigExpert have set a higher standard for quality and innovation. The color touch display visually rotates to support horizontal or either vertical orientation of this inventive, space-saving power supply design. This remarkably quiet (21 dBa) and extremely clean, RF noise-free switch mode supply delivers 40A continuous and peak current at 13.8VDC. Featuring 5V, 9V and 12V USB PD charging and power connectivity, full power 13.8VDC front 45A rated front and rear Powerpoles and 30A rated 1/4" rear panel binding posts round out exceptional power connection flexibility. Progressive styling highlights the ingenious customizable color touch panel for swipe up or down for On-Off control with tap or swipe-action selection of these on-screen parameters: 1. Total Power, Amps and Temperature (C); 2. Power DC Voltage, Amperage to the Load; 3. AUX Volts and Amps for USB A and USB C; and Conditions: Line Voltage and Air Intake Temperature (C). The POWER-600 features Dedicated Charging Ports (DCP 5V 2.5A) USB A and the enhanced charging capabilities of USB C ports that support the USB PD 2.0 specification to include 5V/2.4A, 9V/2.4A and 12V/2.3A. Device brands and versions supported include: BC1.2, Apple, Samsung Qualcomm QC2.0, QC3.0 MTK PE+1.1 and MTK PE+2.0 Huawei Fast charge: FCP and SCP Samsung fast charge: AFC Spreadtrum fast charge: SFCP Extremely quiet 21 dBa operation and very high efficiency make this lightweight and trim DC power supply ideal for virtually any radio station, home, office, test bench, portable or DXpedition. The mains input range is 80 to 264 VAC and 47 to 63 Hz; even portable generator frequency and voltage fluctuations are automatically managed. Automatic Cooling System Management takes care of the fan speeds and the Intelligent Protection System continuously monitors and protects connected equipment from short circuit, excessive voltage, current and temperature. The Power 600 design minimizes electromagnetic interference, meets International safety standards and complies with CE safety and electromagnetic compatibility requirements and FCC regulations. Add real time remote control of the Power 600 via the rear panel USB C port with RigExpert REAMP Logger Software for Windows, MacOS and Ubuntu 21.10 Operating Systems (free download). Adjust, set and see visual status displays, automatic power off/power on settings, power logging and more. Order the amazing Shackmaster Power 600 Compact Desktop Power Supply from DX Engineering.
( 13 )
$459.95
WiMo X-Quad Antennas
WiMo X-Quad Antennas, with separate monoband models for 144-146 MHz or 430-440 MHz, represent a refinement of VHF and UHF cross-polarized Yagis. They are well-known in Europe as "multi-element quads"—an antenna with aluminum elements, not a wire and fiberglass antenna—which offer excellent gain with a relatively short boom length. X-Quads are a great solution due to their short length and lightweight construction, especially for VHF/UHF satellite systems which require rotation in all compass directions and elevations. Two X-Quad Antennas, one for 144-146 MHz and one for 430-440 MHz, may be mounted at opposite ends of an azimuth-elevation rotator cross-boom for high-performance full duplex Satellite operations. For either or both bands, X-Quad Antennas may instead be used in a stationary mount, as pictured, for all-mode terrestrial operations. In either application, multiple X-Quad Antennas may be stacked vertically and horizontally for additional gain and tighter patterns. The WiMo X-Quad special features, developed specifically for Satellite Amateur Radio include: * Switchable Polarization Plane; horizontal/vertical/right hand circular/left hand circular (remote switching requires optional equipment) * High gain compared to other antenna forms due to the "stacking effect" * Short boom length and compact design * Back-end boom or mid-boom centered mounting to the mast is possible The radiator element is a "stacked quad" multi-element beam, for which linear polarization can be compared to a crossed slotted radiator. However, the advantage of the X-Quad is that it can be optimally used for the desired polarization by simply changing the feed. Compared to a typical cross-polarized Yagi, all directors and reflectors are active in the X-Quad, which enables the compact design. As with cross-polarized Yagis, switching is accomplished on the mono-band X-Quad either by a coaxial relay or with a band specific WiMo Remote Polarization Switch (sold separately). If the remote switch is mounted at the antenna, then only one coax cable and a 4-conductor control cable are required, sold separately. If the Switch is used at the station, then two coaxial cables from the antenna to the station are needed. The WiMo X-Quad Antenna can also be permanently set for circular operation by using an optional, band-specific Phase Line. The secondary elements are arranged diagonally in relation to the square-shaped driven element, which corresponds to the voltage distribution on the radiating element, for the most favorable results. In comparison to Yagi antennas, the X-Quad pattern and tuning are affected less by the influence of external fields, making them ideal for installation under a roof, in an attic space. All elements are electrically conductively connected with boom and cable outer sheath, thus eliminating interference from atmospheric noise. Two Type-N female coaxial connectors, one for each polarization, are mounted in a housing that is waterproof. Boom and elements are made of aluminum, all hardware is stainless steel. Construction and design of the antennas are protected by law (DBGM). The antennas are designed for boom-end mounting; however, alternatively the mast clamp can be mounted in the middle of a non-metallic boom. These antennas have a split boom, so their transport length is only 29.53 in. (75cm) for the 2m antenna and 25.59 in. (65cm) for the 70cm X-Quad. For portable operations they can be stowed away comfortably in the trunk of car and their shipping costs are comparatively low.
( 5 )
$349.99
DX Engineering 450 Ohm Ladder Line
DX Engineering 450 Ohm Ladder Line is a transmitting grade low-loss parallel-wire RF feedline featuring a strong, waterproof, UV black polyethylene insulation. To maintain the wire spacing between the conductors while reducing losses, the integral flat plastic material alternates with rectangular openings, which explains the "Window Line" nickname. Capable of handling over 3 kW of RF power, DXE-LL450 is a very low-loss transmission line across HF. It is ideal for exceptionally long feedline runs and for low band wire antennas operated on multiple bands on which the feedpoint impedance can vary significantly, causing mismatch and elevated SWR. Unlike coaxial cables, DX Engineering DXE-LL450 Ladder Line maintains low RF losses at frequencies where antenna feedpoint impedance mismatches cause high SWR. It can provide significantly higher efficiency than coaxial cable when feeding non-resonant antenna systems that are matched with a wide impedance range antenna tuner. DXE-LL450 450 Ohm Ladder Line is a high-quality flat RF feedline, about 0.938 in. wide (15/16") with two 16-gauge copper-clad steel wire conductors (29 AWG x 19 strands) that provide the strength to hold up for long spans between supports without twisting. It exhibits a nominal impedance of around 400 Ohms and a nominal Velocity Factor of 91 percent. For proper performance, LL450 Ladder Line must be installed suspended through the air supported by insulators every 25 ft. or less, kept at right angles and several inches away from other wires, and at least one foot away when run parallel to the earth or large metal surfaces. Installing with an axial twist of one turn per 10 ft. can reduce wind, rain and ice loading, RF coupling and RF noise. DXE-LL450 can be mounted with insulators and suspended on metal or wood posts or run along a wood fence line, only if the fence has no wires or metal mesh that couples RF noise or unbalances the feedline. Often used for non-resonant wire doublet antennas, DXE-LL450 can be more easily terminated outdoors to a DXE-MC20-C4-1 4:1 Balun or a DXE-MC20-1-1T 1:1 Balun. Then, with no inline switches or relays, directly connect the antenna system to a typical indoor wide range antenna tuner using a solid dielectric coax, not foam dielectric, to handle high voltage at high SWR. DXE-213U or DXE-214 Coaxial Cable Assemblies 12 or 18 ft. with PL-259s are perfect for this method, which eliminates the need for a special balanced tuner, and avoids the losses and detuning effects caused by unbalancing when ladder line is routed indoors near wires and ducts. DXE-LL450 is sold by the foot, previously sold as DXE-LL450-CTL, this is the same ladder line with a new part number. It is also available in spools of 500 ft. DXE-LL450-5C and 1,000 ft. DXE-LL450-1K, which are specified for DX Engineering Reversible Beverage System Antennas. NOTE: This type of feedline is intended for MF and HF use and is not suitable for use above 54 MHz. Also consider DX Engineering 300 Ohm Ladder Line, DXE-LL300, an excellent alternative low-loss HF feed line that reduces impedance extremes on non-resonant HF multiband antenna systems.
( 63 )
$385.99
Toptek Communications PA-180V VHF 138-174 MHz 180W Power Amplifiers
Toptek Communications PA-180V VHF 138-174 MHz 180W Power Amplifiers are very stable Solid State VHF linear amplifiers designed for Amateur Radio 2 Meter FM, SSB and CW operations and Commercial communications. Dual MOSFET push-pull PAs provide full RF output of 180 watts with only 5 watts input, making this amplifier* useful for both handheld and compatible mobile VHF transceivers. Mode, RX preamp, SWR meter and Power Output Settings of 60, 100, 140 and 180 watts are front panel selectable. The front panel multi-color 8 LED string serves to indicate output power settings, output power, SWR and Error. A unique shroud enables the oversize fan to quietly cool this compact amplifier for safe long-term operation at full power. Multiple protection circuits, a 21dB Receive Low Noise Amplifier (LNA), RF sense or PTT keying (required for SSB/CW) and thermostatically controlled fan are some of the great features of this Toptek VHF amplifier. True 50 ohm Type-N RF connectors maintain the highest efficiency to the feedline and the antenna. NOT compatible with DMR and P25 modes. *Requires 13.8 VDC @ 30A max. (External power supply not included).
( 8 )
$449.99
DX Engineering RPA-2 Modular Receive Preamplifiers
DX Engineering RPA-2 Modular Receive Preamplifiers are newly designed versions of the RPA-1 with internal slots for accessory modules. They accommodate the addition of the one optional plug-in module, such as the 75 to 50 ohm Impedance Transformer Module, or the Receiver Guard 5000HD Plug-In Module, or the DX Engineering Clifton Laboratories Z10020 AM Band Filter Module. DXE-RPA-2 preamps have very low internal noise and are optimized for the 300 kHz to 35 MHz range. They help you hear the weakest signals without artificially raising the noise. Meticulous craftsmanship and durable, robust components allow these preamplifiers to withstand high signal levels while providing superior dynamic range and third-order intercept performance that equals or exceeds most receiver and transceiver front-ends. RPA-2 Receive Preamplifiers have key features added, as requested by our tech-oriented customers and enthusiasts: - Internal slot accommodates the optional 75 to 50 ohm Impedance Transformer Module to accomplish typical receive antenna feedline to equipment transitions without losses -Also allows direct connection to 50 ohm receive antenna feedline BNC connectors with no transformer required - Internal slot for DXE-RG5000HD-PM Receiver Guard 5000HD Plug-In Module – Front-end protection for the RPA-2 - Secure BNC female connectors and receive-system friendly F female connectors remain; both prevent accidental connection to transmitting devices with UHF connectors - A green LED indicates when DC power is present and the preamplifier circuit is engaged. - An ingenious positive-capture threaded-sleeve 2.1 mm power connector that ensures the DC power cannot be accidentally disconnected from the RPA-2. - Alternatively, a simple internal jumper change allows the RPA-2 to be powered by DC on the feedline While many other common preamplifiers suffer from harmonic distortion, RPA-2 Modular Receive Preamplifiers include our exclusive, advanced push-pull design that eliminates harmonic distortion. Their high quiescent current increases their ability to handle strong signals without distortion or overload. 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 Vdc input. Please do not use a cheap wall transformer or noisy switching wall-wart to power these top-of-the-line preamplifiers. Indoor installation at the back of the radio is recommended for RPA-2. For those who want to place them in an enclosure at a receive antenna system, a handy internal jumper allows these new units to be powered on the coaxial cable. RPA-2 Receive Preamplifier Specifications: -Input and Output Connectors, female: BNC and F -Frequency Range: 300 kHz to 35 MHz -Gain: 16 dB, +/- 1.5 dB (over entire frequency range) -Output Third Order Intercept: 43 dBm -Noise Figure: 3.5 dB -One dB Compression Point: +26 dBm (400 mW output) -Dynamic Range, IM3: 110 dB or greater (500 Hz bandwidth) -Power Requirement: 12-18 Vdc, 140 mA max. Note: Whenever the DX Engineering "Documentation" tab is available, please look at the associated files for additional product information. DX Engineering RPA-2 Modular Receive Preamplifiers offer superior receiving results on crowded medium wave and shortwave bands as well as on the ham bands. SWLs and Radio Amateurs around the world have come to rely on the advanced operational performance of DX Engineering Receive Preamplifiers. You will be able to pull in the weakest signals and snag that rare one, under the most difficult conditions, when you need it the most. Order your DX Engineering RPA-2 today!
( 14 )
$269.99
Toptek Communications PA-80V-U Dual Band FM VHF/UHF Power Amplifiers
Toptek Communications PA-80V-U Dual Band FM VHF/UHF Power Amplifiers are attractive and flexible units intended for analog use with dual band handheld FM transceivers (HT), for Amateur 2M/70cm and VHF-UHF Safety, Business, Marine and Commercial applications. The PA80V-U operates over the 138-174 MHz and 430-470 MHz ranges with a nominal maximum power output of 80 watts on both bands. Typically, full output is achieved with 5 watts input from the transceiver. At a minimum input of 1 watt (maximum 10 watts), the amplifier automatically recognizes the transmitting frequency, switches to the appropriate band and signal path and keys the PA. The output power level can be set independently for VHF and UHF, preset to one of four steps: 25W, 45W, 65W, 85W. A multi-function eight LED bar graph meter measures Power Out, indicates power level settings, SWR (when Show SWR button is depressed), and indicates High SWR, Overdrive, Over-Under Voltage, High Temperature and PA Fail. Only FM Mode is supported, not DMR. NOT compatible with DMR and P25 modes. The Receive Low Noise Amplifier (RX LNA) can be turned on or off independently from the transmit Power Amplifier (TX PA). The LNA provides about 21db on VHF and 12dB on UHF. Input and Output connectors are Type N female for the best SWR and lower losses. The PA-80V-U requires 13.8 VDC at a maximum of 13A.
( 3 )
$465.99
Alinco DR-MD500T Advanced Dual Band VHF/UHF DMR Mobile Transceivers
Alinco DR-MD500T Advanced Dual Band VHF/UHF DMR Mobile Transceivers add to its existing line-up of Digital Commercial/Business or Amateur Radio products. The DR-MD500T has features such as Color LCD Display, 55W Output Power on VHF, and 40W on UHF, as well as up to 4,000 Memory Channels, 10,000 TalkGroup, and up to 300,000 contact lists. Capable of operating in digital and analog with mixed mode in VFO or Memory mode. The DR-MD500T utilizes DVSI's AMBE+2 vocoder for crystal clear DMR digital audio for use in noisy environments like construction sites, parks, security applications, or your favorite repeaters coverage area with no noise or fading even in low lying areas. The DR-MD500T has powerful 2W audio output power to ensure loud crisp receive audio. Alinco DR-MD500T features: * DMR Tier I and Tier II * MAX output power 55 watt (VHF)/40 watt (UHF) * 4,000 channels, 250 zones, 250 scan lists * 300,000 digital contact list * Large 1.77 in. LCD display * Automatic Repeater Roaming * Single or dual channel selectable * Displays DMR ID, Call sign, Name * X-band repeat, analog uplink/digital downlink or vice versa * FM Broadcasting receiver with 100 memory channels and VFO * AES 256bit Encryption (digital mode) * SMS (digital mode) * Communication recording (digital mode) * Individual/Group/All call (digital mode) * CTCSS/DCS/DTMF/2Tone/5Tone encode and decode (analog mode) * Allows CSV export/import of setting parameters * Programmable Auto Repeater Shift in VFO mode * Kill and Stun functions * VFO/MR switch * FCC Part 90 certified
( 11 )
$379.95
Chelegance NANOVNA-F V2 3 GHz Mini Vector Network Analyzer
Chelegance NANOVNA-F V2 3 GHz Mini Vector Network Analyzer is a new generation of portable, stand-alone VNA, featuring a 4.3 inch IPS LCD screen, metal enclosure, 5000 mAh battery and SMA connectors. It is a product based on edy555's NanoVNA and OwOComm's S-A-A-V2. The measurement frequency range of NanoVNA-F V2 is up to 3GHz. The S21 dynamic range is greater than 70dB at 50kHz-1.5GHz and greater than 60dB at 1.5GHz – 3GHz. NanoVNA-F V2 can function up to a continuous 7 hours due to its large capacity battery and low-power design. Specifications: -Frequency range: 50 kHz - 3GHz -S11 dynamic range: 50dB (50 kHz - 1.5 GHz), 40dB (1.5 GHz – 3 GHz) -S21 dynamic range: 70dB (50 kHz - 1.5 GHz), 60dB (1.5 GHz - 3 GHz) -RF output power: -9dBm -Frequency tolerance: 0.5ppm -Screen: 4.3 in. IPS LCD, 800x480 pixel, RTP touchpad -Operation via touch screen or 3 side buttons -Battery: 3.7V Li-Po, 5000mAh -Enclosure type: Aluminum -Enclosure Dimensions (WHD): 4.921 x 2.953 x 0.787 in. (125mm x 75mm x 20mm) -RF port connector: SMA female -Sweep points: 101 -Calibration result storage: 5 -Calibration result interpolating supported -Traces: 4 -Markers: 4 -Measures: S-parameter, VSWR, smith chart, phase, polar, etc. -Mark table can be moved up and down -Firmware upgrade via U-disk with type-c cable -USB power output: 5V/1A -Compatible with NanoVNA-saver, support screenshot Parts Included: -NanoVNA-F V2 x1 -20cm SMA-JJ RG405 cable x2 -Calibration kit: SMA OPEN/SHORT/50 ohm LOAD -SMA-KK adapter x1 -SMA-JJ adapter x1 -SMA-JKW adapter x1 -USB Type-C cable x1 -Stylus x1 Supporting Resources: -User Manual & Quick Starter Guide -[LATEST]NanoVNA-F V2 Portable Vector Network Analyzer User Guide V2.0.pdf (https://chelegance.com/wp-content/uploads/2021/10/CHELEGANCE_NanoVNA-F-V2-Portable-Vector-Network-Analyzer-User-Guide-V2.0..pdf) -[LATEST]NanoVNA-F V2 Quick Start Guide – for firmware v0.3.0.pdf (https://groups.io/g/nanovna-f-v2/files/NanoVNA-F%20V2%20Quick%20Start%20Guide%20-%20for%20firmware%20v0.3.0.pdf) Firmware: -[LATEST]NanoVNA-F_V2_App_v0.3.0.zip (https://groups.io/g/nanovna-f-v2/files/Firmware/NanoVNA-F_V2_App_v0.3.0.zip) -Download previous versions here (https://groups.io/g/nanovna-f-v2/files/Firmware) Desktop Software: -[LATEST]NanoVNA-Saver-0.3.8 (https://chelegance.com/wp-content/uploads/2021/10/Nanovna-Saver-0.3.8.exe) Note: If the current firmware version of your NanoVNA-F V2 device is lower than v0.2.0, please upgrade to v0.2.0 first, and then upgrade to v0.3.0. The new firmware v0.3.0 has the following features: 1. Menu style optimization; New menu UI style; New keyboard UI style: bigger buttons for avoiding typing error; Change the ordinate to 10 grids; 2. Optimized menu structure for more convenient operation; 3. Improved the measurement noise of high frequency; 4. Allow the reference position to be set to negative value; 5. Fixed known bugs.
( 6 )
$262.99
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