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.
----- Original Message -----
From: "MICHAEL PARKIN" <mikenjulie.parkin@btopenworld.com>
Subject: Re: Europa-List: ANR Heasdsets
<mikenjulie.parkin@btopenworld.com>
>
> Voice activated intercom is available a lot of reasonably priced intercom
> units - this problem does not exist then!!
>
> regards
>
> MP (GJULZ)
>
> ----- Original Message -----
> From: "Carl Pattinson" <carl_p@ntlworld.com>
> To: <europa-list@matronics.com>
> Subject: Europa-List: ANR Heasdsets
>
>
<carl_p@ntlworld.com>
> >
> > There is one crucial point that seems to be being missed in this
> discussion.
> >
> > We have flown with ANR headsets for the last two years. Ours are not
very
> > sophisticated as they are one of the very first ones made (made by
> Skyforce)
> > but the |ANR does offer a very good degree of noise cancellation and it
is
> > true that this is mainly "bass" frequency".
> >
> > We were thinking of replacing these sets for a more expensive version
(eg:
> > Sennheiser or Pilot DNC) till my wife suggested that the noise might not
> be
> > coming from through the headset shells but might be amplified noise
> through
> > the microphone. Sure enough, when the intercom was switched off, the
> headset
> > noise was reduced dramatically. We have since conducted a flight where
the
> > intercom was kept off for long periods and this was much more relaxing.
> >
> > It seems possible that although advanced ANR designs may cancel out some
> of
> > this microphone induced noise it would be better if it could be
prevented
> > from being picked up in the first place. My previous headset was a
Peltor
> > (non ANR) and this used a voice activated microphone - I recall that
again
> > with the mic off there was much less noise.
> >
> > Before discarding our present headsets we are going to try and see if
> there
> > is any way of shielding the mikes from the ambient cockpit noise.
> >
> > Has anybody tried to do this (or even used a throat mic).
> >
> >
>
>
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