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Re: Europa-List: ANR Heasdsets

Subject: Re: Europa-List: ANR Heasdsets
From: MICHAEL PARKIN <mikenjulie.parkin@btopenworld.com>
Date: Thu, 9 Sep 2004 12:48:06

Isn't that what I said Bob.

regards

MP

----- Original Message ----- 
From: "R.C.Harrison" <ptag.dev@ukonline.co.uk>
Subject: Re: Europa-List: ANR Heasdsets


<ptag.dev@ukonline.co.uk>
>
>  Yes, Mike but my ICOM AC200 auto squelch takes most of the incoming
signal
> which you want  also.! Dump the auto squelch control(Test Button ) you get
> the signal from afar but all the other crap with it !
> Regards
> Bob  H G-PTAG
> ----- Original Message ----- 
> From: "MICHAEL PARKIN" <mikenjulie.parkin@btopenworld.com>
> To: <europa-list@matronics.com>
> Subject: Re: Europa-List: ANR Heasdsets
>
>
> <mikenjulie.parkin@btopenworld.com>
> >
> > I don't think that is correct.  The radio squelch sets the threshold for
> the
> > signal to noise ratio of the incoming radio signal. It has nothing to do
> > with mic circuit on the receiving aircraft.  In practice, listening to a
> > distant weather broadcast for example:  With the squelch on, it maybe
that
> > nothing can be heard.  However, adjusting the squelch, may well allow
the
> > signal to be heard among the rest of the noise.  On many modern systems,
> the
> > squelch is either on(level set automatically) or off.
> >
> > regards,
> >
> > MP  (GJULZ)
> >
> > ----- Original Message ----- 
> > From: "Richard Holder" <rholder@avnet.co.uk>
> > To: <europa-list@matronics.com>
> > Subject: Re: Europa-List: ANR Heasdsets
> >
> >
<rholder@avnet.co.uk>
> > >
> > > You should be able to set the squelch to keep the level of background
> > noise
> > > picked up by the microphone to a minimum.
> > >
> > > Effectively it becomes voice operated. The mike circuit doesn't work
> until
> > > enough volts are produced inside the mike by the sound of your voice.
> > >
> > > 'orrible simplification !
> > >
> > > Richard
> > > Richard F.W. Holder                      01279 842804 (POTS)
> > > Bell House, Bell Lane,                   01279 842942 (fax)
> > > Widford, Ware, Herts,                    07860 367423 (mobile)
> > > SG12 8SH                                 email : rholder@avnet.co.uk
> > > Europa Classic Tri-gear : G-OWWW, High Cross
> > > PA-28-181 : Piper Archer : G-JANA, EGSG (Stapleford)
> > >
> > >
> > <carl_p@ntlworld.com>
> > > >
> > > > Yes and No, our radio and intercom are integrated (ICOM 200) so it
> would
> > > > require some rejigging to integrate a new intercom box in the
circuit.
> > Might
> > > > be easier to fit an isolator switch on the mic (so you could hear
> > incoming
> > > > transmissions but not the noise from the mikes).
> > > >
> > > > It may be easier to replace the headsets for ones that are cleverer
at
> > > > killing the noise.
> > > >
> > > >
> > >
> > >
> >
> >
>
>




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