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BHI NES10-2 Operating Manual

Noise eliminating speakers
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bhi
bhi
NES10-2
bhi Ltd
NES-5
PO Box 136
Bexhill on Sea
East Sussex
Noise Eliminating Speakers
TN39 3WD
Operating Manual
email: info@bhi-ltd.co.uk
sales@bhi-ltd.co.uk
www.bhi-ltd.co.uk
www.wonderwand.co.uk
www.bannerbadges.co.uk
Tel:+44 (0)870 2407258
Fax:+44 (0)870 2407259
Page 1
Page 32
1030-103D Issue F 02/04

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  • Page 1 NES10-2 bhi Ltd NES-5 PO Box 136 Bexhill on Sea East Sussex Noise Eliminating Speakers TN39 3WD Operating Manual email: info@bhi-ltd.co.uk sales@bhi-ltd.co.uk www.bhi-ltd.co.uk www.wonderwand.co.uk www.bannerbadges.co.uk Tel:+44 (0)870 2407258 Fax:+44 (0)870 2407259 Page 1 Page 32 1030-103D Issue F 02/04...
  • Page 2 89/336/EEC – EMC Directive volumes of noise will be present. Prolonged exposure to high sound levels may lead to hearing damage. bhi accept no responsibility to damage to hearing through incorrect operation of this equipment. Page 31 Page 2...
  • Page 3 Ltd to notify any person of such revision or For contact details please refer to back cover of this changes.

  • Page 4: Table Of Contents

    Tuneable counter poise for use with Wonder Wand and other QRP antennas. Introduction Audio DSP Noise cancellation Wonder Wand Unpacking Order code:WWAND Rig mounted QRP antenna 2 NES10-2 providing near band Controls coverage from 40M to 70cm Description Specification The Code Cube:...

  • Page 5: Overview

    The headphones effectively remove noise such as blower that you cannot clearly hear what is being said. The noise, ambient noise, jet engine noise or music from another NES10-2 and NES-5 enable the user to listen and con- room. centrate “stress-free”.

  • Page 6: Audio Dsp Noise Cancellation

    Complete generic speaker and are powered by any 12 – 24 vdc unregu- the Yaesu FT817. the Kenwood TS50. most lated power source. You can use the optional bhi ex- Order code: Order code: applications. ternal power supply or in-vehicle adapter.

  • Page 7: Unpacking

    NES10-2 Noise eliminating speaker NEDSP1061 modules The NEDSP1061 modules again feature 2 fixing screws the bhi noise reduction DSP. It’s small 4 self adhesive rubber feet size allows it to be retro fitted into 1 fused power lead existing equipment, or designed in to new equipment.

  • Page 8: Nes10-2

    2.1 Controls Order code: NEIM1031 The NEIM1031 In-line module uses the same DSP technol- Noise Cancellation Selection Table ogy found in the NES10-2 and NES5 speakers, but has the following additional features: NES10-2 Noise Eliminating Speaker Noise cancellation 9 - 35dB...

  • Page 9: Description

    Sensitivity control . This controls the input level to the electronics of the NES10-2, and is ad- ) " justed depending on the input level from the radio communication equipment being used.
  • Page 10 Optional Extras LED indicator. The LED illuminates red when The following items are available from bhi as optional power is applied and changes to green when extras. If you would like to order any of these items the noise cancellation is active.

  • Page 11: Specification

    Noise attenuation - 9 - 35dB What adjustments do I need to make during use? Number of attenuation levels None. Once the NES10-2 is set to your personal set- Tone reduction - 4 -65dB tings no further adjustments should be necessary.
  • Page 12 If the problem is cured, try removing the first ferrite. 145.0 For adaptors see section 5 Figure 8. Power lead suppression. Try transmitting again. If the problem persists , then NES10-2 Noise Eliminating Speaker move to the next step. SW1 SW2 SW3 Level Filter PO Box 136...

  • Page 13: Setup

    However if problems with feed- back are experienced during transmisison then the 1. Connect the bhi power supply or a suitable 12 to 24 following measures may help. Vdc power supply to the power socket at the back of the NES10-2.
  • Page 14 Adjust the sensitivity control levels of signal , the NEIM1031 (Noise eliminating knob on the top of the speaker if required to obtain In-line Module).

  • Page 15: Nes-5

    (NES10-2 only). The speaker works but the noise cancellation doesn’t appear to improve the audio quality of the signal: Check that the LED on the front of the NES10-2 Rubber feet changes from red to green when the noise Fixing Screws cancellation is switched off and on (NES10-2 only).

  • Page 16: Description

    If your external speaker socket is not a 3.5mm jack socket, then audio lead adapters are available from bhi (see section 4). A 2 metre audio exten- 3.3 Specification sion lead is available, If your equipment is more than 2m away from the NES-5 (see section 5).

This manual is also suitable for:

Nes-5

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