---------------------------------------------------------- AeroElectric-List Digest Archive --- Total Messages Posted Sat 06/25/11: 3 ---------------------------------------------------------- Today's Message Index: ---------------------- 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) ________________________________ Message 1 _____________________________________ Time: 04:34:32 AM PST US From: BobsV35B@aol.com Subject: Re: AeroElectric-List: 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! 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 . . . - The AeroElectric-List Email Forum - <> --> _http://www.matronics.com/Navigator?AeroElectric-List_ (http://www.matronics.com/Navigator?AeroElectric-List) - MATRONICS WEB FORUMS - _http://forums.matronics.com_ (http://forums.matronics.com/) - List Contribution Web Site - <>-Matt Dralle, List Admin. --> _http://www.matronics.com/contribution_ (http://www.matronics.com/contribution) _http://www.matronics.com/Navigator?AeroElectric-List_ (http://www.matronics.com/Navigator?AeroElectric-List) ======================== Web href="_http://forums.matronics.com_ (http://forums.matronics.com/) /">_http://forums.matronics.com_ (http://forums.matronics.com/) ========================= -Matt com/contribution href="_http://www.matronics.com/contribution_ (http://www.matronics.com/contribution) ">_http://www.matronics.com/contribution_ (http://www.matronics.com/contribution) ====================================== href="http://www.matronics.com/Navigator?AeroElectric-List">http://www.matronics.com/Navigator?AeroElectric-List href="http://forums.matronics.com">http://forums.matronics.com href="http://www.matronics.com/contribution">http://www.matronics.com/contribution (http://www.matronics.com/Navigator?AeroElectric-List) (http://www.matronics.com/contribution) ________________________________ Message 2 _____________________________________ Time: 11:06:34 AM PST US Subject: AeroElectric-List: Re: Toggle switch keyway convention: up vs. down From: "mathewdisoza" 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 _____________________________________ Time: 11:23:23 AM PST US From: "Robert L. Nuckolls, III" Subject: Re: AeroElectric-List: Re: Toggle switch keyway convention: up vs. down At 01:03 PM 6/25/2011, you wrote: > > >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! 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