netmaster15(at)juno.com
Guest
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 Posted: Tue Feb 14, 2006 9:11 pm Post subject: Mikes and O2 Masks |
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Hey Guys,
Are any of you gents old enough to have heard of throat mikes ? If your
O2 mask does not have a built in mike
or you have other complications, try to locate an old throat mike. The
quality of your transmission may not be all you have become accustomed to
but the cockpits of the WW2 fighters were so noisey that a hand mike
picked up engine roar and air blow bye noise. The throat mike was
virtually immune to those intrusions because its pickup was the
vibrations from the larynx. You may find this a preferable arrangement if
you find it impossible to stuff your boom mike inside your O2 mask.
----OR---- Pick up an old diluter demand mask from a soon-to-be chopped
up FEDEX 727. Those sweep on masks all had integral mikes in them. While
you're at it, pick up a walk around O2 bottle with a full face mask
attached. They are really great when you've got smoke in the cockpit and
your eyes are smarting so badly you can't keep them open. This is, of
course, assuming you have decided to stay with this hot box you're
strapped to. YOU may be tempted to make that decision because your brain
and nervous system is wired in series with your check book. Or maybe
you've got a chute and your back seat guy doesn't.. BAD NEWS!!
CLIFF UMSCHEID
On Tue, 14 Feb 2006 16:48:27 +0000 "Daniel Fortin"
<fougapilot(at)hotmail.com> writes:transmiddion
[quote]
<fougapilot(at)hotmail.com>
Markus,
Thanks for the info. The way I was explained was that not only was
the 55
lighter, but it was cut higher on the front (for better vis) and on
the back
(to allow more freedom of head movement). Don't really know anything
about
the 68.
Scott,
The way it works for the O2 mask is simple; First you need to have
the
helmet set up with the O2 mask receivers. Then, instead of having a
separate
mic mount, simply use a T-bayonet which is nothing more then a mic
mount
that fits in the O2 receiver. When you change from one to the other,
simply
disconnect the mic from the helmet and connect the mask mic in. You
can also
choose to have the receivers and a permanent mic. I had that on my
OLD (as
in very OLD) helmet and found I had a hard time communicating
because I
couldn't bring the mic close enough, but I still needed to manually
connect
the O2 mic.
Hope it helps,
Dan
>From: Markus Feyerabend <feyerabm(at)web.de>
>Reply-To: yak-list(at)matronics.com
>To: yak-list(at)matronics.com
>Subject: RE: help wanted !
>Date: Tue, 14 Feb 2006 15:42:08 +0100
>
>
<feyerabm(at)web.de>
>
>Hello,
>
>Sorry for stepping in here, but the 33 is nothing but the
predecessor of
>the 55.
>And the 33 came after the 22, which came after the 2A...
>In principal, the 55 is a 33 shell (with some modifications)
without the
>visor housing and a different liner.
>The biggest advantage of the 55 over the 33 was itīs lighter weight
and
>lower profile (no visor housing).
>The drawback of the 55 over the 33 is that the visor will most
likely be
>ripped off during a high speed eject (>500kts), thatīs why the
latest
>development is the 68. The 68 still uses almost the same shell as
the 33
>(albeit exclusivley made of graphite/kevlar instead of fibreglas)
but again
>a different visor setup.
>There is a multitude of different possible setups out and it
requires a
>careful look to identify what setup one has. On the other hand it
offers a
>lot of room for modifications and individual setups.
>
>And no, the 33 was just as well a fighter helmet, as are the 55 and
the 68,
>just in a different era...
>
>Markus
>
>yak-list(at)matronics.com schrieb am 14.02.06 14:44:48:
> >
> >
<viperdoc(at)mindspring.com>
> >
> > The 33 was used initially for the heavy guys. (Big Ugly F(at)#$'s,
Herc's
> > ,ect). Not anymore as I understand.
> > Doc
> >
> >
> > > [Original Message]
> > > From: Shinden33 <shinden33(at)earthlink.net>
> > > To: <yak-list(at)matronics.com>
> > > Date: 2/13/2006 11:14:35 PM
> > > Subject: RE: help wanted !
> > >
> > >
<shinden33(at)earthlink.net>
> > >
> > > Dan,
> > >
> > > You can buy one of the 55 or 33's with both the boom mic and
Oxygen
>mask?
> > So
> > > it is wired for a mic in both the boom and the mask or do you
switch
>them
> > > out?
> > >
> > > Also you mentioned the 55 was designed for fighter pilots.
What was
>the
> > 33
> > > designed for?
> > >
> > > Can you use the military oxygen masks with civilan O2
systems?
> > >
> > > Thanks
> > > Scott
> > >
> > >
> > > --
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