---------------------------------------------------------- AeroElectric-List Digest Archive --- Total Messages Posted Wed 11/28/12: 6 ---------------------------------------------------------- Today's Message Index: ---------------------- 0. 10:15 AM - Just 3 Days Left - Please Make Your List Contribution Today! (Matt Dralle) 1. 06:46 AM - Re: Wiring handheld scanner into intercom () 2. 06:58 AM - VDO Fuel gauge wild reading... (SIDESLIP) 3. 02:20 PM - Re: VDO Fuel gauge wild reading... (Robert L. Nuckolls, III) 4. 03:29 PM - Re: VDO Fuel gauge wild reading... (SIDESLIP) 5. 06:21 PM - Re: Re: VDO Fuel gauge wild reading... (Robert L. Nuckolls, III) ________________________________ Message 0 _____________________________________ Time: 10:15:29 AM PST US From: Matt Dralle Subject: AeroElectric-List: Just 3 Days Left - Please Make Your List Contribution Today! There are only three days left until the end of this year's List Fund Raiser. Please take a minute to show your support as so many others have this year and make sure YOUR name is on the forthcoming List of Contributors! Its quick and easy using the secure web site with a credit card or PayPal: http://www.matronics.com/contribution or by sending your personal check to: Matronics Lists c/o Matt Dralle 581 Jeannie Way Livermore, CA 94550 Thank you in advance for your support of these List services! Matt Dralle Matronics Email and Forum Administrator ________________________________ Message 1 _____________________________________ Time: 06:46:23 AM PST US From: Subject: RE: AeroElectric-List: Wiring handheld scanner into intercom Geoff, I claim no knowledge of audio connections but I would like to add to that a related issue with my Icom. I have a transceiver model (forgot which 1), which accepts and adapter plug for my headphones. If needed I can plug into the adapter and listen to whatever. The problem I have is that whenever I have the Icom on and engine is running, the noise level sets off the auto-mic and places into transceiver mode. Regardless of how I set the sensitivity, it just doesn't cooperate. In manual mode the mic picks up lots of background and makes my transmission unrecognizable (when flying). I think the designers build these things primarily with ground crew in mind. I too would like to add some sort of adapter to my AUX option on the panel such that I could plug directly in and bypass the handheld mic. I've not asked my cable guys (http://www.approachfaststack.com/), but I'm sure they have a solution (or will make 1). You'll need to give up a $100 bucks or so for a result, but it will work. Glenn -----Original Message----- From: owner-aeroelectric-list-server@matronics.com [mailto:owner-aeroelectric-list-server@matronics.com] On Behalf Of geoffwinter Sent: Wednesday, November 28, 2012 12:05 AM Subject: AeroElectric-List: Wiring handheld scanner into intercom Hi, the airfield I fly out of has a UHF-only ATIS which I currently monitor via a handheld scanner with a 3-conductor 1/8" 8 output (Icom IC-R5). I use bud-style earphones and simply put one of the ear pieces into my ear underneath my headset when I need to hear the scanner. Not exactly the most convenient solution, so what I'd like to do is wire in the output from the scanner directly into the output from my KY97A comm radio so that both are permanently going into my headset. That way, all I need to do is turn on the scanner to hear it, then turn it off when finished. I'm guessing I need to match the impedances to make this work - I understand the standard David Clarke headset is usually 100 ohm? Could anyone please advise what (electrically) I need to do to make this work? Apologies for being a complete avionics/electrical numpty! Regards Geoff, NSW AUS Read this topic online here: http://forums.matronics.com/viewtopic.php?p=389239#389239 ________________________________ Message 2 _____________________________________ Time: 06:58:25 AM PST US Subject: AeroElectric-List: VDO Fuel gauge wild reading... From: "SIDESLIP" Hello all... Got another little "issue". I've got the 912 gauges in my 601XL-B. I've got a single fuel gauge with a left/right tank switch. When flipped to the right tank, the needle slowly winds its way past 1/1. Bad ground? Bad sender? It's a top mounted sending unit, but that is the extent of my knowledge on this subject. If it was a bad ground, would the needle not slam itself to its full swing past full? The fact it takes a bit has me wondering. Thanks in advance! Chad -------- C-GYXQ. 912ULS. 601XL-B Read this topic online here: http://forums.matronics.com/viewtopic.php?p=389255#389255 ________________________________ Message 3 _____________________________________ Time: 02:20:00 PM PST US From: "Robert L. Nuckolls, III" Subject: Re: AeroElectric-List: VDO Fuel gauge wild reading... At 08:56 AM 11/28/2012, you wrote: > >Hello all... > >Got another little "issue". I've got the 912 gauges in my 601XL-B. >I've got a single fuel gauge with a left/right tank switch. When >flipped to the right tank, the needle slowly winds its way past 1/1. >Bad ground? Bad sender? It's a top mounted sending unit, but that is >the extent of my knowledge on this subject. If it was a bad ground, >would the needle not slam itself to its full swing past full? The >fact it takes a bit has me wondering. Get out your ohmmeter and find the DIFFERENCE between the two senders. The slow motion of the gauge is not uncommon. At Cessna back in the 60's we 'dopped' the pivots on Stewart Warner gauge clusters with a drop of high viscosity silicon oil. This didn't affect accuracy but it stopped needle jitter due to mechanical and/or electrical stimulus. Bob . . . --------------------------------------- ( . . . a long habit of not thinking ) ( a thing wrong, gives it a superficial ) ( appearance of being right . . . ) ( ) ( -Thomas Paine 1776- ) --------------------------------------- ________________________________ Message 4 _____________________________________ Time: 03:29:44 PM PST US Subject: AeroElectric-List: Re: VDO Fuel gauge wild reading... From: "SIDESLIP" Difference? Well, the tanks are full, so the only thing I could establish MAYBE, is the current resistance at the gauge for each of the senders. Is that what you mean? Thanks Bob! Chad -------- C-GYXQ. 912ULS. 601XL-B Read this topic online here: http://forums.matronics.com/viewtopic.php?p=389373#389373 ________________________________ Message 5 _____________________________________ Time: 06:21:46 PM PST US From: "Robert L. Nuckolls, III" Subject: Re: AeroElectric-List: Re: VDO Fuel gauge wild reading... At 05:28 PM 11/28/2012, you wrote: > >Difference? Well, the tanks are full, so the only thing I could >establish MAYBE, is the current resistance at the gauge for each of >the senders. > >Is that what you mean? Sure. You have one side that reads right, the other one wrong. The only difference is their position on the selector switch. So in comparing the two sides with each other, one of them has a loose connection, bad sender resistance, or perhaps the switch itself is bad. Having one side that works and one that doesn't really narrows down the possibilities and offers the opportunity for comparative analysis. Bob . . . --------------------------------------- ( . . . a long habit of not thinking ) ( a thing wrong, gives it a superficial ) ( appearance of being right . . . ) ( ) ( -Thomas Paine 1776- ) --------------------------------------- ------------------------------------------------------------------------------------- Other Matronics Email List Services ------------------------------------------------------------------------------------- Post A New Message aeroelectric-list@matronics.com UN/SUBSCRIBE http://www.matronics.com/subscription List FAQ http://www.matronics.com/FAQ/AeroElectric-List.htm Web Forum Interface To Lists http://forums.matronics.com Matronics List Wiki http://wiki.matronics.com Full Archive Search Engine http://www.matronics.com/search 7-Day List Browse http://www.matronics.com/browse/aeroelectric-list Browse Digests http://www.matronics.com/digest/aeroelectric-list Browse Other Lists http://www.matronics.com/browse Live Online Chat! http://www.matronics.com/chat Archive Downloading http://www.matronics.com/archives Photo Share http://www.matronics.com/photoshare Other Email Lists http://www.matronics.com/emaillists Contributions http://www.matronics.com/contribution ------------------------------------------------------------------------------------- These Email List Services are sponsored solely by Matronics and through the generous Contributions of its members.