[1000mp] BHI DSP Modules for 1000mp Radios

Mike Schatzberg cherokeehillfarm at earthlink.net
Tue Jan 9 19:59:43 EST 2007 

Hello Ron:

I have not tried the module in any digital mode, but there will be some
reduction of the signal certainly.  Likewise for CW, but you may find that
the larger improvement in signal to noise ratio far outweighs the few db
signal strength reduction.  I think this is why some operators still like to
use the module for CW, even though it can not be used for QSK operations.

Most of the guys say that once they start using the module on SSB, they
never turn it off.  Coupled with the reasonable price of the module, that is
a pretty strong endorsement for the product.

73 and Happy DXing,

Mike
W2AJI
----- Original Message ----- 
From: "W4LDE-Ron" <w4lde at cfl.rr.com>
To: "All about Yaesu 1000mp" <1000mp at mailman.qth.net>
Sent: Tuesday, January 09, 2007 6:34 PM
Subject: Re: [1000mp] BHI DSP Modules for 1000mp Radios


> 2 Icom 756 Pro Radios to be given away to QSL/QTH .NET supporters!  One on
Dec 31 and one on Jan 31.
> See http://mailman.qth.net for details.
> ______________________________________________________________
>
> Mike,
>
> I guess it would not help in the digital communications world or CW?
>
> Have you used it in any digital modes or on CW?  I have the type of
> computer trash noise that this unit would help eliminate but I wish it
> could function on CW and some of the digital modes.  Maybe there's
> someone who could comment about it.
>
> Ron W4LDE
>
>
> Mike Schatzberg wrote:
>
> >2 Icom 756 Pro Radios to be given away to QSL/QTH .NET supporters!  One
on Dec 31 and one on Jan 31.
> >See http://mailman.qth.net for details.
> >______________________________________________________________
> >
> >Hello Win:
> >
> >This module is really for SSB mainly.  It actually will attenuate
> >heterodynes somewhat, and that is certainly problematic for CW.  It is
also
> >helpful for AM.
> >
> >The system is active DSP.  This means that the algorithms sample the AF
> >signal, and this may take a second or so, depending upon your levels and
> >conditions.  During the sampling, the noise reduction isn't working to
its
> >fullest potential.
> >
> >Once the noise reduction has settled, the results are really excellent,
with
> >no reduction in voice quality.
> >
> >73,
> >
> >Mike
> >W2AJI
> >
> >
> >----- Original Message ----- 
> >From: "Win" <w0lz at winlyn.us>
> >To: "All about Yaesu 1000mp" <1000mp at mailman.qth.net>
> >Sent: Tuesday, January 09, 2007 8:49 AM
> >Subject: Re: [1000mp] BHI DSP Modules for 1000mp Radios
> >
> >
> >
> >
> >>2 Icom 756 Pro Radios to be given away to QSL/QTH .NET supporters!  One
on
> >>
> >>
> >Dec 31 and one on Jan 31.
> >
> >
> >>See http://mailman.qth.net for details.
> >>______________________________________________________________
> >>
> >>Works well for most SSB noise situations.  I use it every day. It is one
> >>
> >>
> >of
> >
> >
> >>those things that, once you have, you can't do without. The attack time
is
> >>too slow for CW QSK but it can be used in come cases to monitor CW down
in
> >>the noise.
> >>
> >>Win, W0LZ
> >>
> >>
> >>----- Original Message ----- 
> >>From: "Mike Schatzberg" <cherokeehillfarm at earthlink.net>
> >>To: <1000mp at mailman.qth.net>
> >>Sent: Monday, January 08, 2007 10:44 PM
> >>Subject: Re: [1000mp] BHI DSP Modules for 1000mp Radios
> >>
> >>
> >>
> >>
> >>>2 Icom 756 Pro Radios to be given away to QSL/QTH .NET supporters!  One
> >>>
> >>>
> >on
> >
> >
> >>>Dec 31 and one on Jan 31.
> >>>See http://mailman.qth.net for details.
> >>>______________________________________________________________
> >>>
> >>>Hi Howard:
> >>>
> >>>Thanks for the input.  I'm glad your results have been similar to mine,
> >>>
> >>>
> >we
> >
> >
> >>>use the identical algorithms in the BHI devices.
> >>>
> >>>Another way of looking at the need for the improvement, is to ask the
> >>>question, "how many operators use the audio DSP" in their Mark V?
> >>>
> >>>The input I have received on that question is also interesting, with
> >>>
> >>>
> >most
> >
> >
> >>>stating that they do not use it at all.  My personal experience is that
> >>>
> >>>
> >it
> >
> >
> >>>reduces the noise, and significantly reduces the intelligibility of
> >>>recovered speech, so that it is useless on weak signals.
> >>>
> >>>73 and Happy DXing,
> >>>
> >>>Mike
> >>>W2AJI
> >>>1000mp-owner at mailman.qth.net
> >>>
> >>>----- Original Message ----- 
> >>>From: "Howard Klein" <howk2 at hotmail.com>
> >>>To: <1000mp at mailman.qth.net>
> >>>Cc: <cherokeehillfarm at earthlink.net>
> >>>Sent: Monday, January 08, 2007 11:15 PM
> >>>Subject: RE: [1000mp] BHI DSP Modules for 1000mp Radios
> >>>
> >>>
> >>>
> >>>
> >>>>Hi Mike,
> >>>>As you may recall from a past E-mail, I purchased a similar module
made
> >>>>by
> >>>>BHI but sold by GAP under the model name Hear IT. I have had mine for
a
> >>>>couple months in line with an external speaker using a MarkV. It also
> >>>>
> >>>>
> >has
> >
> >
> >>>a
> >>>
> >>>
> >>>>jack for earphone use. I always use it although it is possible to
> >>>>
> >>>>
> >switch
> >
> >
> >>>it
> >>>
> >>>
> >>>>out of line. It does a tremendous job on 160 where I need it most. My
> >>>>
> >>>>
> >>>model
> >>>
> >>>
> >>>>besides the ability to switch it out off line allows adustment for
> >>>>
> >>>>
> >input
> >
> >
> >>>and
> >>>
> >>>
> >>>>output and of course the degree of DSP filtering. A very worth while
> >>>>addition.
> >>>>Howard..K2HK
> >>>>
> >>>>----Original Message Follows----
> >>>>From: Mike Schatzberg <cherokeehillfarm at earthlink.net>
> >>>>Reply-To: All about Yaesu 1000mp <1000mp at mailman.qth.net>
> >>>>To: 1000mp at mailman.qth.net
> >>>>Subject: [1000mp] BHI DSP Modules for 1000mp Radios
> >>>>Date: Mon, 08 Jan 2007 21:14:26 -0500
> >>>>
> >>>>
> >>>>Hello 1000MP Fans:
> >>>>
> >>>>For several months now I have been enjoying the use of the BHI DSP
> >>>>module,
> >>>>the ANEM, with my Mark V.
> >>>>
> >>>>I have found it far superior to the on board audio DSP on my radio.
> >>>>
> >>>>Some time ago, I wrote a review of the module and posted it on my
> >>>>website.
> >>>>A later revision was accepted for publication by QST and should appear
> >>>>
> >>>>
> >>>there
> >>>
> >>>
> >>>>soon.
> >>>>
> >>>>Has anyone else tried one of the BHI modules?  With which radio?  How
> >>>>
> >>>>
> >did
> >
> >
> >>>it
> >>>
> >>>
> >>>>perform?
> >>>>
> >>>>73 and Happy DXing,
> >>>>
> >>>>Mike
> >>>>W2AJI
> >>>>
> >>>>
> >>>http://home.earthlink.net/~cherokeehillfarm/id2.html
> >>>
> >>>______________________________________________________________
> >>>1000mp mailing list
> >>>Home: http://mailman.qth.net/mailman/listinfo/1000mp
> >>>Help: http://mailman.qth.net/mmfaq.html
> >>>Post: mailto:1000mp at mailman.qth.net
> >>>
> >>>
> >>>-- 
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> >>>Version: 7.5.432 / Virus Database: 268.16.7/620 - Release Date:
1/8/2007
> >>>4:12 PM
> >>>
> >>>
> >>>
> >>>
> >>______________________________________________________________
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> >>
> >>
> >
> >______________________________________________________________
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> >
> >
> >
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