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Bhi NEDSP1062-kbd amplified dsp noise cancelling filter
NEDSP1062-KBD Amplified DSP Noise Cancelling Module
The NEDSP1062-KBD amplified DSP module enables the bhi DSP noise cancelling to be fitted inside your extension speaker. It incorporates Digital Signal Processing (DSP) technology to provide up to 35dB of noise cancellation and 65dB of tone reduction.
The NEDSP1062-KBD comes complete with fitting instructions for Kenwood SP31 and Yaesu SP8 extension speakers, along with basic fitting instructions for most other types of amateur radio extension speakers. There is now also information for the YAESU SP2000, Icom SP20 & Ten Tec model 307B extension speakers on our website. The module is inserted into audio path of the speaker circuit, in line with the speaker s own loudspeaker. The power connector comes pre-wired with a 2.1mm power connector, and the corresponding fused DC power lead is supplied. The control keyboard is mounted in a convenient location, and is finished off with the supplied black label to give it a professional look.
The fitting of the bhi NEDSP1062-KBD module involves soldering, wiring and the drilling out of the speaker case. Please be sure that you have the necessary skills to carry out the installation. bhi accepts no responsibility for the installation of the NEDSP1062-KBD module and are not liable for any damage to equipment caused by its fitment.
* 4 or 8 levels noise cancellation (selectable)
* Fully adaptive noise cancellation up to 35dB
* Audio bypass when switched off
* Virtually no distortion to the speech
* Frequency response 50Hz - 4.3KHz
* Visual and audible indication of DSP level
* Input and Output level controls
* 12 - 18VDC voltage supply range
* Supplied with complete fitting kit, labels, fused dc power lead and full fitting instructions.
Operation: All functions of the NEDSP1062-KBD are controlled by a two push buttons. 1) Filter button - Single press turns the noise cancellation on/off - Holding down the button changes the DSP filter level. 2) Power on/off bypass button - Single press turns the power on/off - Holding filter select button whilst pressing this button enters DSP filter setup and demo mode.
Note: Follow the instructions in the manual for a more detailed explanation of the DSP filter controls and operation.
The mode of operation is indicated both visually and audibly. The LED is illuminated red (or Orange if 8 filter levels are selected) when the noise cancellation is off.
This module is designed to pass speech. Other signals such as data, music and morse (CW) will to some degree pass through depending on the filter level used, but the integrity of these signals cannot be guaranteed.
Note: Also available is a basic PCB version without a keyboard, this module is ideally suited to designing into new applications.
See our new website bhi-ltd.com for more information
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