Today's Message Index:
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1. 04:34 AM - Re: Nav Data Headsets (BobsV35B@aol.com)
2. 11:06 AM - Re: Toggle switch keyway convention: up vs. down (mathewdisoza)
3. 11:23 AM - Re: Re: Toggle switch keyway convention: up vs. down (Robert L. Nuckolls, III)
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Subject: | Re: Nav Data Headsets |
Good Morning Lynn,
In that case, may I suggest that you check with Wally F. and the other
Stearman folks.
Happy Skies,
Old Bob
Do Not Archive
In a message dated 6/24/2011 9:48:52 P.M. Central Daylight Time,
LynnCole@foxvalley.net writes:
I'm at C77.
Lynn Cole
_LynnCole@foxvalley.net_ (mailto:LynnCole@foxvalley.net)
On Jun 24, 2011, at 4:04 PM, _BobsV35B@aol.com_ (mailto:BobsV35B@aol.com)
wrote:
Good Afternoon Lynn,
Don't know if it will help, but I have a small leather sleeve that fits
over the boom mike. It has a couple of holes where the sound can get through.
That is what I use for my open cockpit Stearman. I am confident that my
Stearman is at least as noisy an environment as is your Cessna 140! <G>
Not sure where I got the leather sleeves, but I kinda think they came with
the David Clark headsets used in my cloth helmets.
You might give it a try.
Happy Skies,
Old Bob
PS Which Fox Valley are you in? There is one nearby my Downers Grove, IL
home.
In a message dated 6/24/2011 3:35:44 P.M. Central Daylight Time,
_LynnCole@foxvalley.net_ (mailto:LynnCole@foxvalley.net) writes:
I have a 1946 Cessna 140 that has a very noisy interior (no mufflers on
the engine). The problem that I have is that the microphone picks up the
noise. If I turn the squelch up so it doesn't continuously pick up the
noise, I have to shout to break the squelch. Any solutions to this problem?
Lynn Cole
_LynnCole@foxvalley.net_ (mailto:LynnCole@foxvalley.net)
On Jun 24, 2011, at 8:35 AM, Robert L. Nuckolls, III wrote:
<_nuckolls.bob@aeroelectric.com_ (mailto:nuckolls.bob@aeroelectric.com) >
At 08:12 AM 6/24/2011, you wrote:
<_rv7alamb@sasktel.net_ (mailto:rv7alamb@sasktel.net) >
Everyone has their favorite headset. On a recent flight of twelve hours
over two days I couldn't have asked for a better headset than the Quiet
Technologies. _http://www.quiettechnologies.com_
(http://www.quiettechnologies.com/) / It is a foamie in the ear type. Their advertising says:
Quiet as an ANR headset
Clearer audio - critical to communication
Unbelievably lightweight
Rugged design
Long-distance flying comfort
Inexpensive replacement ear tips
No head-squeeze
No sweaty earmuffs
No "bad hair" days
Easy to carry and pack
LOWEST PRICE of any insert headset
A few years ago I had a headset discussion on the
radio with some local hams. One of them was needing
a lightweight headset that would let him listen to
a radio in a busy office (emergency operations
center) but anything that pressed on or covered
his ears was uncomfortable.
We tossed around some ideas. After several passes
at an experiment, he settled on some $10 ear buds
with nice foam seals. He said that he could not
wear them with the usual 'wedge' fit for which
they were designed but he fashioned a head band
from coat hangar wire. The buds were attached
to loops at the ends of the wire with JB Weld.
With simple manipulation of the wire, he could
get exactly the pressure he wanted on the ear
canal without actually forcing anything into
the ear. Since the seal to the outside world
was still quite effective, noise attenuation
was on a par with foam ear-plugs.
The poorest of foam ear plugs offers 20+ db
attenuation . . . . reduction of ambient noises
to 1% or less. This combination of head-set
and stock hand-held microphone proved a practical,
low cost and effective solution.
Telex had a super-light headset way back when
with 'insert' technology. They gave some samples
to Cessna flight test guys. None of them were
still in the hands of a flight test pilot a few
months later. I ended up with a pair that I kept
in my flight bag. They 'worked' fine as a headset
but had small, hard plastic tips that needed to
be wedged into the ear canal. I couldn't wear
them for more than an hour. Kept them many years
as 'backup' to the audio isolation amplifier
but very seldom needed them.
The DIY earbud solution might need an impedance
matching transformer to work well with the higher
impedance aviation headset circuits . . . furhter
study is needed.
Bob . . .
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Subject: | Re: Toggle switch keyway convention: up vs. down |
Hey Bob.. . . . . . . .!
Cool hah 8)
--------
I'm Mathew and I love to learn
Read this topic online here:
http://forums.matronics.com/viewtopic.php?p=344078#344078
Message 3
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Subject: | Re: Toggle switch keyway convention: up vs. down |
At 01:03 PM 6/25/2011, you wrote:
><mathewdisoza@hotmail.com>
>
>Hey Bob.. . . . . . . .!
>Cool hah 8)
>
>--------
>I'm Mathew and I love to learn
Welcome to the list. The sum total of experiences
and willingness to share amongst members is huge.
You've come to the right place!
Bob . . .
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