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Bhi-ltd
When distinct, clear communication is essential, trust bhi-ltd noise cancellation products to eliminate unwanted background noise and interference. bhi Ltd has been...
When distinct, clear communication is essential, trust bhi-ltd noise cancellation products to eliminate unwanted background noise and interference. bhi Ltd has been a trusted supplier of noise reduction products for military and emergency services applications for years. Bring that same proven sound cancellation technology to your Ham radio setup with bhi’s wide range of Amateur radio products—noise eliminating modules, speakers, switches, and more! Shop DX Engineering for bhi Ltd sound cancelling and noise reduction products today!
When distinct, clear communication is essential, trust bhi-ltd noise cancellation products to eliminate unwanted background noise and interference. bhi Ltd has been a trusted supplier of noise reduction products for military and emergency services applications for years. Bring that same proven sound cancellation technology to your Ham radio setup with bhi’s wide range of Amateur radio products—noise eliminating modules, speakers, switches, and more! Shop DX Engineering for bhi Ltd sound cancelling and noise reduction products today!
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
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$339.99
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)
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$275.99
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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$291.99
bhi NCH Active Noise Canceling Headphones
bhi NCH Active Noise Canceling Headphones reduce ambient background noise enabling you to have a more enjoyable listening experience. These ultra-lightweight, over-the -ear style noise canceling headphones also give good passive audio isolation from external noise. They are an excellent choice for those wanting to reduce aircraft cabin noise, air conditioning noise, train noise, ambient background noise and similar types of continuous environmental noise. Enjoy a greatly improved listening experience where a fan or air conditioner is running while listening to a radio, an audio device or watching a video. The adjustable headband and soft over-ear pads make sure that the headphones are a comfortable fit. The NCH headphones require one AAA alkaline battery (supplied) and a handy switch allows the active noise cancellation to be turned on and off. A green LED indicates when the NCH is active. NOTE: Avoid wearing headphones when driving, cycling, or any activity that requires quick reactions, whenever hearing must not be impaired. Do not wear headphones for extended periods of time at high audio level as damage to hearing is possible. Features and Specs of the bhi NCH Active Noise Canceling Headphones: * Comfortable over-ear style headphones * Active noise cancelling: 12 - 15dB * Magnet: Neodymium * Frequency Response: 20 - 20,000 Hz * Maximum Input: 40 mW * Sensitivity: 110 dB * Impedance: 32 ohms * Weight: 0.42 lbs. (190g) including battery * Cable length: 4 ft. (1.25 m) detachable * Supplied with 1 x AAA alkaline battery * Battery life: 45 hours
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$87.99
bhi Extension Speakers
bhi Ltd Extension Speakers are robust, well made speakers that are suitable for use with bhi in-line DSP modules or as a standalone external speaker for your radio. For a standard, non-DSP external speaker, choose from these three rugged, high-quality bhi models: * EXTSPK25 * LSPKR * SPKR8 Details on each appear below: * EXTSPK25 features: -- This model is destined to be considered as one of the best sounding passive Extension Speakers on the market! The EXTSPK25 is a top-of-the-line 8 ohm two-way passive speaker for the shack. It is a well-crafted large speaker which is essentially the same as the bhi DESKTOP model, but without the built-in DSP and power amplifier. Perfect for direct connection to DSP units with audio power amplifiers such as the bhi EQ20, it may also be connected directly to a transceiver. The EXTSPK25 features a 4 in. bass driver and a 1 in. tweeter for excellent audio. It connects with most transceiver and receiver standard mono "external speaker" output or a DSP unit speaker output. * LSPKR features: -- Large, full range 4 in. mobile-style extension speaker -- Adjustable mounting bracket that also serves as a stand -- 20 watts power handling -- 4 Ohm impedance -- 78 in. integral cable with 3.5mm mono plug * SPKR8 features: -- Compact, 3 in. communications speaker -- Pedestal stand--flat surface mount with speaker angle adjustments -- Passive Noise filter -- Frequency 100 to 10KHz -- 8 watts power handling -- 8 ohm impedance -- Integral cable with 3.5mm mono plug -- Dims: 3.54 x 3.58 x 5.28 in (90 x 91 x 134 mm) -- Weight: 1.2 lbs. (0.56Kg)
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$49.99
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$74.99
On Sale
bhi HP-1 Wired Stereo Headphones
The bhi HP-1 Wired Stereo Headphones are excellent high-sensitivity headphones for use with all types of audio electronics, even smaller, low-power audio devices. They can be used for radio communications as well as for listening to music. They are very comfortable to wear due to their extra-lightweight and compact design, adjustable headband and soft leatherette padded ear cups. This helps to eliminate the uncomfortable pressure feeling that can be created by large, heavy headphones, allowing you to listen for longer and without fatigue. The cable is 1.9 m (74 in.) long and is terminated with an integral 3.5mm stereo plug. The bhi HP-1 Headphones are supplied with a 3.5mm (1/8 in.) stereo to 6.35mm (1/4 in.) stereo adapter. Note: Avoid wearing headphones when driving, cycling, or any activity that requires quick reactions or when your hearing must not be impaired. Do not wear your headphones for extended periods of time at high volumes as this may damage your hearing. Features and Specs of the HP-1 Dynamic Stereo Headphones: * Recommended use: HiFi, TV, Radio Communications * Comfortable super-lightweight design * Adjustable headband * Closed back, over-the-ear, foldable * Leatherette type soft padded ear pads * Frequency Response: 20 to 20,000 Hz * Maximum Input: 40 mW * Sensitivity: 102 dB * Impedance: 32 ohms * Weight: 155g (5.47 oz., which is very lightweight) * Supplied with 1.9 meter cord terminated to 3.5mm (1/8 in. ) stereo plug and 3.5mm (1/8 in.) to 6.35mm stereo (1/4 in.) adapter
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$57.99
$46.39
bhi ParaPro EQ20 Parametric Equalizers
bhi ParaPro EQ20 Parametric Equalizers give you the opportunity to customize the sound of your received audio and boost the audio power to your speakers. Delivering a total of 20 watts of audio amplification, EQ20 Parametric Equalizers are excellent for any radio. Adding the ability to tailor the received audio for your speakers AND your ears is extremely helpful for improving intelligibility, and increasing the enjoyment of listening to your radio! Four EQ20 model variations provide your choices, from either a basic Parametric Equalizer audio amplifier unit, or a model that includes DSP filtering or Bluetooth input capabilities, or both! BHD-EQ20 – ParaPro EQ20 Parametric Equalizer BHD-EQ20B - ParaPro EQ20 Parametric Equalizer with Bluetooth BHD-EQ20-DSP - ParaPro EQ20 Parametric Equalizer with DSP BHD-EQ20B-DSP - ParaPro EQ20 Parametric Equalizer with DSP and Bluetooth These units are also perfect on mobile radios or for boosting the audio performance of older rigs with lower audio output. A parametric equalizer allows user is able to adjust any specific part of the frequency range to be selected and adjusted in strength. This gives you greater flexibility and accuracy to set the audio to suit your own hearing. Additionally, the Digital Signal Processing (DSP) versions of the EQ20 remove unwanted noise from received signals by applying a special audio-processing digital algorithm that seeks the noise and eliminates it! The Bluetooth versions of the EQ20 provide additional functionality to your speaker system, including listening to audio from a mobile phone, laptop or digital device equipped with Bluetooth. Here are the features of the bhi EQ20 Parametric Equalizers: * Parametric equalizer lets you shape the audio to suit your hearing * Accepts mono, stereo or two separate audio channel inputs via 3.5mm jacks * Class-D high-efficiency audio amplifier eliminates large heatsink * 10W audio per channel * Use with your passive speakers * 4mm banana jack or phono jack output connections * 3.5mm stereo headphone output (Class AB) * DSP versions have two independent channels of bhi noise cancelling * Bluetooth versions add wireless input for listening to a Bluetooth enabled mobile device or laptop * Easy to use controls * Microprocessor controlled functions * Signal input overload feature * 12V DC operation (3A) At a total of 20 watts of power these audio amplifiers drive larger communications speakers to their full potential. The EQ20 Parametric Equalizer controls afford audio tailoring that helps to compensate for receiver or speaker weaknesses. Choose models with the exceptional bhi DSP noise reduction technology and Bluetooth input for a truly winning combination! Get the most from your receiver and companion speakers. Order bhi ParaPro EQ20 Parametric Equalizers from DX Engineering and give your speakers some serious drive!
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$295.99
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$499.99
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 Ltd Ground Breaker
bhi Ltd Ground Breaker is an audio pass-through, RF blocking device that can solve the unusual dilemma of distorted audio bleed-through cause by RFI. First, you tried to provide a better ground system, wrapping the audio leads round ferrite rings, clamping ferrite beads onto the cables, running your systems on different power supplies, and you have checked the connections. If RF is still getting into the audio, the Ground Breaker may be the final solution. It totally isolates the ground of your accessory audio equipment from those of the radio system. Ground Breaker units come in impedances covering the main values of 10,000 ohm, 600 Ohm and 8 ohm that are used in most audio systems. Line level units can handle up to 100mW and the 8 ohm speaker units can handle up to 500 mW of audio. The Ground Breaker is simple to install. Simply plug the unit into the appropriate socket on your radio and then plug the audio accessory, such as the DSP or powered speaker into the socket on the Ground Breaker. The direction of connection doesn't matter; the unit works both ways with either the radio or the audio unit connected to the socket or the plug. Do not add extensions and try to keep the leads as short as possible to minimize RF pickup off the air. Sometimes, proper grounding of devices doesn't take care of that one nagging, RF bleed-through problem. In that case, use a bhi Ground Breaker audio RF blocking device from DX Engineering.
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$49.99
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
bhi Ltd Audio Cables and Adapters
bhi Ltd Audio Cables and Adapters provide easy connections to your gear. These are standard audio cables and adapters that make is easy to use your bhi DSP units or speakers. Plus, they can be used for any of your signal or switching applications. They work for audio, CW keying, amplifier keying... you name it! Most of us like to have these handy adapters and cables on hand, so add a few of these items to your order and be ready!
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$8.99
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$42.99
bhi Ltd PSU12-2A-WW Universal 12 V DC Power Supply
bhi Ltd PSU12-2A-WW universal 12 V DC power supply is a 2 ampere switch mode power supply that accepts 100 to 240 V AC input. This is a handy, true 12 V wall supply that includes standard USA, UK, European, and Australian plug adapters. It carries full International safety approvals, making it suitable for world use. The engineers at bhi tested it to ensure that it performs well and is a good quality, low noise power supply that works well with all of their main DSP noise cancelling units. Specifications of the bhi Ltd PSU12-2A-WW universal 12 V DC power supply: * Output: 12 V DC, regulated (2 amp max) * Current minimum: 0.01 amp * Rated input voltage 100 to 240V AC * Rated frequency: 50 to 60Hz * Line regulation: +/-5 percent at rated load * Total output regulation: +/-5 percent at 0 to 100 percent load * Ripple and noise: (mV p-p) 120mV P-P * Over current and short circuit protection * Case size WHD: 2.047 x 4.134 x 1.574 in. (52 x 105 x 40mm) excluding AC pins * Weight: 9.17 oz. (0.26 kg) * DC cord: 70.87 in. (1.8 m) * DC plug 2.1 x 5.5 x 12mm, positive center pin * Efficiency meets ErP Stage 2 no-load power consumption * Maximum operating temperature: 0 to 40 degrees C * Storage temperature: -20 to 80 degrees C * Operating humidity: 10 percent to 90 percent * Safety approvals: CE, TUV, C-Tick, cUL * MC standards: EN55022:2006+A1:200/EN6100-3-2/EN6100-3-3
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$39.99
bhi Ltd DC Power Cable Assemblies
bhi Ltd DC power cable assemblies have standard 2.1mm power connectors, center positive, to power accessories, including your bhi Ltd DSP speakers and devices. These DC power cables have in-line or in-plug fuses for wiring protection.
Not Yet Reviewed
$12.99
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$13.99
bhi Ltd Mini Switch
No more messing around with cables! The new bhi Mini Switch is a compact two-way switch box enabling the connection of two radios to your bhi DSP noise cancelling product. Supplied with two 3.5mm mono audio cables, they're ready to connect to your radios! The Mini Switch features two mono 3.5mm input jacks, one 3.5mm mono output jack and one cable with 3.5mm mono plug. It is supplied with two ALD-001 3.5mm plug to plug cables! Power handling is 3 watts maximum and the unused input is always terminated with a load to protect your audio outputs. Velcro pads are supplied to securing of the Mini Switch to your radio equipment. All connections are 3.5mm mono and audio adapters will be required to convert other types of connections. Note: Whenever the DX Engineering "Documentation" tab is available, please look at the associated files for additional product information. The Mini Switch is a compact 2.09 x 1.46 x 1.73 in. (53 x 37 x 44mm) so it will fit just about anywhere in you operating position. You normally use one rig at a time. Switch one DSP unit between them with bhi Ltd Mini Switch units from DX Engineering!
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$42.99
bhi LLC1 Stereo Line Level Converter
bhi Ltd LLC1 Stereo Line Level Converter enables you to use powered speakers with your EQ20 audio DSP unit. It converts your bhi EQ20 speaker level audio outputs to line level stereo and isolates the EQ20 Class D audio amplifier stage. This enables the connection of the EQ20 to powered speakers, an amplifier, or recording device. Background: The bhi EQ20 uses a Class D amplifier for efficiency and to reduce the need for heavy metal heatsinking. The only down side is that grounds or speaker outputs cannot be connected together as this may cause damage to the amplifier chip, which means that powered speakers cannot connected directly to the speaker outputs of the EQ20. The bhi Line Level Converter LLC1 converts the speaker level audio output of your bhi ParaPro EQ20 audio DSP unit to an isolated RCA line-level audio signal. This isolates the Class D amplifier stage from the line level output connection enabling powered speakers, an amplifier, or a recording device to be used with the bhi EQ20 unit. The LLC1 can handle the output from class D amplifiers designed for driving up to 10 watts into a standard 4 ohm or 8 ohm speaker. Connections: The LLC1 has an audio lead with two RCA phono plugs at one end for connection to the bhi EQ20 unit, and a stereo 3.5mm (1/8 in.) socket at the other end for the connection to powered speakers, an amplifier, or a recording device.
Not Yet Reviewed
$62.99
bhi Ltd Six Way Switch Box
Don't keep disconnecting cables...get a switch box! If you need to connect more than one piece of equipment to your bhi Noise Eliminating Speaker or In-Line Module, the Six Way Switch Box is the answer. It allows up to 6 pieces of equipment to be connected to a noise eliminating speaker, in-line module or extension speaker. The Six Way Switch Box features: * Three inputs loaded at 8 Ohms * Three un-loaded inputs for low level microphone signals * Dimensions (WHD): 4.13 x 1.57 x 2.95 in. (105 x 40 x 75mm) * Supplied with two 4 ft. audio cables with 3.5mm mono plugs Note: Whenever the DX Engineering "Documentation" tab is available, please look at the associated files for additional product information. You like your DSP stuff. Switch it up! Order a bhi Ltd Six Way Switch Box from DX Engineering and process all that audio!
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$55.99
bhi DESKTOP FEET
Want to make your bhi DESKTOP DSP Speaker more skid proof? This set of three self-adhesive rubber feet will do the trick! You get two 16mm feet and one that is 6mm. The 16mm feet fit next to the front plastic feet and the 6mm foot installs onto the metal bracket. Order bhi DESKTOP FEET from DX Engineering and stabilize that speaker!
Not Yet Reviewed
$4.99
bhi Dual In-Line Mounting Stand
The bhi DL-STD1 Dual In-Line Mounting Stand is made from quality high-impact clear acrylic and is ideal for mounting the Dual In-Line noise cancelling In-line Module. The module simply sits horizontally in the stand allowing you to see and operate all the controls more easily. The audio and power cables can be routed from the top and to the rear for a neat installation. The headphone socket on the Dual In-Line is easily accessible from the side of the unit. The bhi DL-STD1 Dual In-Line mounting stand is made from quality high-impact clear acrylic and is ideal for mounting the Dual In-Line noise cancelling In-line Module. The module simply sits horizontally in the stand allowing you to see and operate all the controls more easily. The audio and power cables can be routed from the top and to the rear for a neat installation. The headphone socket on the Dual In-Line is easily accessible from the side of the unit. The stand comes boxed with Velcro for fixing the unit more securely to the stand.
Not Yet Reviewed
$17.99
Clearance
bhi Bypass Switch
bhi Bypass Switch is an audio bypass switch for the bhi Dual In-line and Compact in-Line DSP noise cancelling units, which don't have an internal audio bypass facility. When you switch the power off on these bhi units, the audio does not pass directly through to your external speaker. So, with the Bypass Switch, you can route the audio from your radio directly to your extension speaker without powering on your bhi unit. This can be particularly useful if you just want to listen to your radio without your bhi noise cancelling unit switched on. A single push-button switch on the Bypass Switch provides this facility. Press the button in and the audio routes through your bhi DSP noise cancelling unit (power on). Press the button again and the switch returns to the out position and the audio is routed directly from your radio and loudspeaker. bhi Bypass Switch features: * Complete audio bypass of bhi DSP unit * Latching switch: In--DSP audio, Out--Bypass audio * Four 3.5mm mono jacks * Two 3.5mm mono plug patch cables * Audio power 5 watt RMS max * Unit Dimension, WHD: 3.150 x 1.969 x 0.866 in. (80 x 50 x 22mm)
Not Yet Reviewed
$54.99
$43.99
bhi Ltd Interchangeable DC Power Adapters
bhi Ltd Interchangeable DC Power Adapters are for use with the bhi Compact In-Line Module and converts a 2.1mm male power connector to a 1.3mm female connector for use with any center-positive DC power supply.
Not Yet Reviewed
$8.99