BHi Dual In-line DSP Noise Cancelling Module
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bhi Noise Reduction products

Bhi dual in-line dsp noise cancelling module - new improved stereo,dual channel noise cancelling algorithm

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Product code: A-COMPACT-IN-LINE
RRP: £199.00
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BHi Dual In-line DSP Noise Cancelling Module

Bhi dual in-line dsp noise cancelling module - new improved stereo,dual channel noise cancelling algorithm

Compact battery-operated DSP noise cancelling unit ideal for portable use, The New Compact In-Line module measures just 125 x 70 x 37 mm, and is the latest addition to the range of DSP noise cancelling products.

This small compact battery-operated handheld unit is ideal for portable use and includes the latest bhi dual channel/stereo DSP noise cancelling technology. It is designed to be used with a pair of stereo headphones, but will also drive a mono loudspeaker or a pair of powered stereo speakers.

The Compact In-Line module is powered by two AA alkaline or NiMH batteries or can be powered from a separate DC supply (power lead supplied). The module's functions are microprocessor controlled and the unit can accept mono or stereo signals. It has separate speaker level and line-level inputs with two separate rotary encoder control with pushbutton action for filter level selection, power on/off, volume control and stereo/mono signal selection. You simply adjust the controls to suit your current noisy conditions. This module is suitable for use on all radios and receivers including software-defined radios (SDR).

Features, Compact handheld battery-operated DSP noise cancelling module,

New improved stereo/dual channel noise cancelling algorithm,

Processed speech clearer and more intelligible,

Easy to use controls for all functions,

Use with mono, stereo or two separate audio channel inputs,

Ideal for portable use, DXing, and special event stations,

Use with headphones or speakers,

Over 40 hours battery life with 2 x AA alkaline or AA NiMH batteries,

Specification: Power Supply,

External supply: 8 to 16V (nominally 30mA, max 350mA peak),

Reverse polarity protected,

Internal batteries: Type: AA x 2 (Alkaline or NiMh recommended),

Reverse polarity protected,

Low battery indication threshold: 2.1V ±0.1V,

Low battery indication: LED colour changes to red.

End-of-life threshold: <1.5V,

Life: 40 hours typical (Alkaline or 2500mAH NiMh).

Auto power-off: 60 minutes if input signal < 60mVpk-pk,

Auto power-off can be disabled if desired.

Audio Inputs, Speaker level in Stereo or Mono

Input Impedance: ~7 Ohms,

Max withstand input power: 2 Watts RMS per channel,

Max input amplitude: 3.9Vpk-pk,

Line level in Stereo of Mono,

Impedance: 6.7k Ohms typical,

Max input amplitude: 1.6Vpk-pk,

Overload indication: LED flashes for at least 3 seconds,

Audio Outputs,

Phones out: Stereo or Mono,

Impedance: > 4 Ohms (Can also be used as Line Level output).

Max power output: 0.2 Watts RMS per channel,

Volume levels: 16 levels in 3dB steps.

DSP Noise Filtering,

Modes: Enabled / Disabled (0dB suppression),

Levels: 8,

Noise suppression: 8 to 40dB,

Size & weight,

Size 125 x 70 x 37mm,

Unit weight 0.125Kg,


"The noise elimination achieved was very worthwhile and the unit was easy to use. As its name suggests the Compact In-Line is very compact and the integrated battery power facility makes it ideal for use on holiday or for a spot of hilltop listening"

Mike Richards G4WNC - Radio User magazine,

"I thought you might enjoy seeing your Compact In-Line installed in my K3 and KX3 Station. It is sitting on top of a small audio amplifier (to the right of the KX3) which powers the two speakers. It works GREAT! (Possibly even better than your mono units.) Makes the general radio and atmospheric noise level drop away which, in turn, makes listening so much more enjoyable. Any SWL listener would be thrilled with the improvement, as well."

“I had never tried “stereo” audio from my rigs until getting the Compact In-Line. There is a significant increase in listening enjoyment by using stereo audio. The Compact In-Line greatly reduces the audio “hiss” and makes the audio generally quieter and much easier to listen to.”

“The setup of the Compact In-Line is very intuitive, albeit after a brief reading of the information sheet. All changes in volume and processing are indicated audibly by means of beep tones. Changes in the processing level show as variations in audio beep frequency, e.g. increases in processor levels are conveyed by increases in the frequency of the tone produced. Very easy to follow.” James Robbins N1JR.

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