---------------------------------------------------------- AeroElectric-List Digest Archive --- Total Messages Posted Tue 11/15/16: 4 ---------------------------------------------------------- Today's Message Index: ---------------------- 0. 09:00 AM - Reminder (Matt Dralle) 1. 11:06 AM - Automotive Electrical System Study (William Hunter) 2. 09:56 PM - SV-MAG-236 (William Hunter) 3. 11:08 PM - Re: SV-MAG-236 (Stuart Hutchison) ________________________________ Message 0 _____________________________________ Time: 09:00:49 AM PST US From: Matt Dralle Subject: AeroElectric-List: Reminder Dear Listers, A quick reminder that November is the annual Matronics List Fund Raiser. The Lists are 100% member supported and all of the operational costs are covered solely through your Contributions during this time of the year. *Your* personal Contribution makes a difference and keeps all of the Matronics Email Lists and Forums completely ad-free. Please make your Contribution today to keep these services up and running for another great year! Use a credit card or your PayPal account here: http://www.matronics.com/contribution Or, by sending a personal check to: Matronics / Matt Dralle 581 Jeannie Way Livermore CA 94550 Thank you in advance! Matt Dralle Matronics Email List and Forum Administrator ________________________________ Message 1 _____________________________________ Time: 11:06:39 AM PST US From: "William Hunter" Subject: AeroElectric-List: Automotive Electrical System Study Hi All, I finally got around to conducting the scientific study of the electrical draw of my car electrical system when the ignition switch is off. Here is the results of this scientific study: 1999 Saturn 3.46 MA 2002 Saturn 2.02 MA 2007 Yukon 3.42 MA The 1999 Saturn was the one I had the new battery die on last week. The battery was really dead (not mostly dead) after it sat at the airport for about 5 weeks. AutoZone determined that the 8 month old (new) battery had a bad cell and replaced it for FREE!!! I ass-u-me that one cell going bad could reduce the capacity of the battery to the point where the interior lights would not even show any kind of life?!?!? Anyhoo.THANKS AGAIN!!! .. Cheers!!! Bill Hunter ________________________________ Message 2 _____________________________________ Time: 09:56:24 PM PST US From: "William Hunter" Subject: AeroElectric-List: SV-MAG-236 I may have to use a remote mounted SV-MAG-236 magnetometer for my Skyview system because my trim motor is in the location where the AHRS is located and this motor creates a small amount of magnetic interference. I placed a compass in the location and the needle moved a little.it might still work however I am thinking up my backup plan. The ideal location for the remote mounted SV-MAG-236 magnetometer would be under the rear seat of my Velocity (fiberglass) however that is where I want to mount my ADS-B antenna. So the question is.does an digital antenna (and or the coaxial cable running to/from it) create magnetic interference and/or how close to a ADS-B antenna can I locate the SV-MAG-236 magnetometer? THANKS for your help!!! .. Cheers!!! Bill Hunter ________________________________ Message 3 _____________________________________ Time: 11:08:22 PM PST US From: Stuart Hutchison Subject: Re: AeroElectric-List: SV-MAG-236 G=99day Bill. There=99s actually no such thing as a digital antenna every signal (switched digital or analogue) is simply superimposed (i.e. modulated) onto a carrier sine wave at the pre-defined frequency (in this case 978MHz or 1090MHz depending on your ADS-B kit). It=99s more of an art than an exact science and while properly grounded coax in proximity may be just fine, having a radiating (transmitter) antenna that close to the magnetometer is not good. Dynon does allow an AHRS to be offset from the centreline (by extension the magnetometer too), so perhaps you could install the magnetometer in the wing root? Cheers, Stu F1 Rocket VH-FLY www.mykitlog.com/rockfly > On 16 Nov 2016, at 16:50, William Hunter wrote: > > I may have to use a remote mounted SV-MAG-236 magnetometer for my Skyview system because my trim motor is in the location where the AHRS is located and this motor creates a small amount of magnetic interference. I placed a compass in the location and the needle moved a littleit might still work however I am thinking up my backup plan. > > The ideal location for the remote mounted SV-MAG-236 magnetometer would be under the rear seat of my Velocity (fiberglass) however that is where I want to mount my ADS-B antenna. > > So the question isdoes an digital antenna (and or the coaxial cable running to/from it) create magnetic interference and/or how close to a ADS-B antenna can I locate the SV-MAG-236 magnetometer? > > THANKS for your help!!! > .. > > Cheers!!! > > Bill Hunter ------------------------------------------------------------------------------------- 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.