---------------------------------------------------------- AeroElectric-List Digest Archive --- Total Messages Posted Mon 11/13/17: 5 ---------------------------------------------------------- Today's Message Index: ---------------------- 0. 08:10 AM - [PLEASE READ] Why I Have A Fund Raiser... (Matt Dralle) 1. 03:17 AM - Re: z13/8 ess bus feed (mmcelrea) 2. 06:45 AM - Re: Re: Transponder antenna (Steve Stearns) 3. 09:05 AM - Re: Transponder antenna (Airdog77) 4. 01:19 PM - Re: Re: z13/8 ess bus feed (Robert L. Nuckolls, III) ________________________________ Message 0 _____________________________________ Time: 08:10:31 AM PST US From: Matt Dralle Subject: AeroElectric-List: [PLEASE READ] Why I Have A Fund Raiser... Since the beginning, the Matronics List and Forum experience has been free from advertising. I have been approached by fair number of vendors wanting to tap into the large volume of activity across the various lists hosted here, but have always flatly refused. Everywhere you go on the Internet these days, a user is pummeled with flashing banners and videos and ads for crap that they don't want. Yahoo, Google and that ilk are not "free". The user must constantly endure their barrage of commercialism thrust into their face at an ever increasing rate. Enough is enough, and the Lists at Matronics choose not to succumb to that. That being said, running a service of this size is not "free". It costs a lot of money to maintain the hardware, pay for the electricity, air conditioning, maintenance contracts, etc, etc. etc. I choose to hold a PBS-like fund raiser each year during the month of November where I simply send out a short email every other day asking the members to make a small contribution to support the operation. That being said, that contribution is completely voluntary and non-compulsory. Many members choose not to contribute and that's fine. However, a very modest percentage of the members do choose to make a contribution and it is that financial support that keeps the Lists running. And that's it. To my way of thinking, it is a much more pleasant way of maintaining the Lists and Forums. The other 11 months of the year, you don't see a single advertisement or request for support. That's refreshing and that is a List and Forum that I want to belong to. I think other people feel the same way. Won't you please take a minute to make your Contribution today and support these Lists? http://www.matronics.com/contribution Or, drop a personal check in the mail to: Matt Dralle / Matronics 581 Jeannie Way Livermore CA 94550 USA Thank you for your support! Matt Dralle Email List Admin. ________________________________ Message 1 _____________________________________ Time: 03:17:02 AM PST US Subject: AeroElectric-List: Re: z13/8 ess bus feed From: "mmcelrea" Thankyou Bob I am building the aircraft with approval for IFR flight here in the UK and the LAA are concerned about single failure points. Using the Z13.8 architecture is it possible to monitor if the backup alternator is working, even if its not supplying? Read this topic online here: http://forums.matronics.com/viewtopic.php?p=474874#474874 ________________________________ Message 2 _____________________________________ Time: 06:45:52 AM PST US From: Steve Stearns Subject: Re: AeroElectric-List: Re: Transponder antenna A word of caution related to putting your transponder antenna inside your cabin... *IF* you are or will be using an ADS-B out 1090 MHz transponder on the antenna in question be aware that it's output is enough different than the non-ADS-B transponder that where the later would work with no problem, the former may inject "ticks" into your audio. My antenna is an exterior antenna just under my legs with a minimum (1/4 wave radius) circular ground plane (it's been tested and provides and excellent match) and when I switched from a traditional transponder to a Garmin GTX-335 ticks were introduced into the audio. I've got an otherwise very tight and well performing audio install with very careful consideration of grounds, returns etc. I've debugged enough to be *quite* certain that the interference path is from the energy radiated off of the antenna itself into the mic circuitry on my panel mount Sigtronics intercom. If you google a bit, you will discover that there are many people who similarly had ticks introduced into their audio once they upgraded their 1090 MHz transponder to being ADS-B out capable. Though I believe the real fix in my install will be to make my intercom less sensitive to RF Field pulses, I'm still not considering moving my transponder antenna inside as it would certainly make the problem worse... I might consider it in the future once I mitigate the tick issue with it in its current location. Steve Stearns Longeze N45FC Boulder/Longmont CO. ________________________________ Message 3 _____________________________________ Time: 09:05:45 AM PST US Subject: AeroElectric-List: Re: Transponder antenna From: "Airdog77" Steve, Good to know! And clearly, this is a lesson for me to be more clear... :) > A word of caution related to putting your transponder antenna inside your cabin... Although I know you're talking about the "old style" antenna, I plan on mounting the L2 antenna at the outboard end of the strake at the junction with the wing. Still quite a ways from the comm antenna in the vertical winglet, but also a decent ways out from the pilot/GIB and cabin electronics. Cheers, Wade -------- Airdog Wade Parton Building Long-EZ N916WP www.longezpush.com Read this topic online here: http://forums.matronics.com/viewtopic.php?p=474955#474955 ________________________________ Message 4 _____________________________________ Time: 01:19:51 PM PST US From: "Robert L. Nuckolls, III" Subject: Re: AeroElectric-List: Re: z13/8 ess bus feed At 05:16 AM 11/13/2017, you wrote: > >Thankyou Bob >I am building the aircraft with approval for IFR flight here in the >UK and the LAA are concerned about single failure points. Using the >Z13.8 architecture is it possible to monitor if the backup >alternator is working, even if its not supplying? Not really . . . but demonstrated failure rates on the SD8 used in standby service is essentially zero. The system runs stone cold in normal flight meaning that thermal wear/tear on components and materials is zero, there are no brushes or slip rings. Further system is both pre-flight and in=flight testable. Don't know how you would get better reliability numbers on an engine driven power source. 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