---------------------------------------------------------- AeroElectric-List Digest Archive --- Total Messages Posted Wed 10/30/13: 9 ---------------------------------------------------------- Today's Message Index: ---------------------- 1. 12:11 AM - Re: King KT78 Manual (Jay Hyde) 2. 12:11 AM - Re: King KT78 Manual (Jay Hyde) 3. 04:23 AM - Re: Trusting a chargers reputation, what an idiot! (Robert L. Nuckolls, III) 4. 04:46 AM - Re: Trusting a chargers reputation, what an idiot! (Jay Hyde) 5. 07:03 AM - Re: King KT78 Manual (user9253) 6. 07:03 AM - Re: King KT78 Manual (user9253) 7. 07:30 AM - Re: Transponder Interference with Icom A-22 Comm Radio (user9253) 8. 07:02 PM - Re: Transponder Interference with Icom A-22 Comm Radio (Robert L. Nuckolls, III) 9. 07:22 PM - Re: Alternator without a Battery (Thomas E Blejwas) ________________________________ Message 1 _____________________________________ Time: 12:11:53 AM PST US From: "Jay Hyde" Subject: RE: AeroElectric-List: King KT78 Manual Thanks Bob- I received a copy from Stein; so helpful, thanks Stein! -----Original Message----- From: owner-aeroelectric-list-server@matronics.com [mailto:owner-aeroelectric-list-server@matronics.com] On Behalf Of Robert L. Nuckolls, III Sent: 30 October 2013 01:56 AM Subject: Re: AeroElectric-List: King KT78 Manual --> At 10:55 AM 10/29/2013, you wrote: >Does anyone have a copy of the King KT78 manual and or pinouts? Check here http://tinyurl.com/kcwmt6f Bob . . . ________________________________ Message 2 _____________________________________ Time: 12:11:53 AM PST US From: "Jay Hyde" Subject: RE: AeroElectric-List: King KT78 Manual Thanks- I was already sent a copy. As we have all mentioned, "ain't this list great!" J From: owner-aeroelectric-list-server@matronics.com [mailto:owner-aeroelectric-list-server@matronics.com] On Behalf Of Jerald Folkerts Sent: 30 October 2013 01:11 AM Subject: RE: AeroElectric-List: King KT78 Manual Jay, I have one for KT78A. If you want, send me your email address. Best, Jerry Folkerts From: owner-aeroelectric-list-server@matronics.com [mailto:owner-aeroelectric-list-server@matronics.com] On Behalf Of Jay Hyde Sent: Tuesday, October 29, 2013 10:55 AM Subject: AeroElectric-List: King KT78 Manual Does anyone have a copy of the King KT78 manual and or pinouts? I tried a google search and came across a link to one at www.gobookee.org but they want a 'credit card verification' to download a 'free' document and I'm suspicious. J Alternatively, does anyone have any experience with gobookee? Johannesburg Jay http://www.matronics.com/Navigator?AeroElectric-List http://forums.matronics.com http://www.matronics.com/contribution ________________________________ Message 3 _____________________________________ Time: 04:23:50 AM PST US From: "Robert L. Nuckolls, III" Subject: Re: AeroElectric-List: Trusting a chargers reputation, what an idiot! At 01:38 AM 10/30/2013, you wrote: >Ron I am busy with a new build and have a similar problem...the >battery voltage at the battery is 13.4 and the MGL Efis shows supply >voltage as 12.9. I have checked all feeds and connectors, but cannot >isolate the voltage drop.... Are you sure the two instruments agree with each other? Measure some other common point of interest between the EFIS and your meter . . . see if they EVER agree. Bob . . . ________________________________ Message 4 _____________________________________ Time: 04:46:48 AM PST US From: "Jay Hyde" Subject: RE: AeroElectric-List: Trusting a chargers reputation, what an idiot! Hey there Bob-V, I agree with Bob-N :-) Even though I think that the MGL instrument is pretty good there may be a calibration issue; I would check both points with an independent meter and see what you get. Jay -----Original Message----- From: owner-aeroelectric-list-server@matronics.com [mailto:owner-aeroelectric-list-server@matronics.com] On Behalf Of Robert L. Nuckolls, III Sent: 30 October 2013 01:23 PM Subject: Re: AeroElectric-List: Trusting a chargers reputation, what an idiot! --> At 01:38 AM 10/30/2013, you wrote: >Ron I am busy with a new build and have a similar problem...the battery >voltage at the battery is 13.4 and the MGL Efis shows supply voltage as >12.9. I have checked all feeds and connectors, but cannot isolate the >voltage drop.... Are you sure the two instruments agree with each other? Measure some other common point of interest between the EFIS and your meter . . . see if they EVER agree. Bob . . . ________________________________ Message 5 _____________________________________ Time: 07:03:18 AM PST US Subject: AeroElectric-List: Re: King KT78 Manual From: "user9253" > but they want a 'credit card verification' to download a 'free' document Do a search of "gobookee scam". After reading about the experiences of others, you will never give them your credit card number. Joe -------- Joe Gores Read this topic online here: http://forums.matronics.com/viewtopic.php?p=411750#411750 ________________________________ Message 6 _____________________________________ Time: 07:03:18 AM PST US Subject: AeroElectric-List: Re: King KT78 Manual From: "user9253" > but they want a 'credit card verification' to download a 'free' document Do a search of "gobookee scam". After reading about the experiences of others, you will never give them your credit card number. Joe -------- Joe Gores Read this topic online here: http://forums.matronics.com/viewtopic.php?p=411751#411751 ________________________________ Message 7 _____________________________________ Time: 07:30:49 AM PST US Subject: AeroElectric-List: Re: Transponder Interference with Icom A-22 Comm Radio From: "user9253" Maybe something like this ebay item # 131025623616 will help. I learned that sellers in China sometimes exaggerate the capabilities of their products. So divide the rated output of the DC to DC Converter by 2. Also note that most of these devices have a non-isolated output. I interpret that to mean that the negative input and negative output are connected together, if that is of any concern to you. I think that converters without a heat-sink can only handle up to one amp. Joe -------- Joe Gores Read this topic online here: http://forums.matronics.com/viewtopic.php?p=411752#411752 ________________________________ Message 8 _____________________________________ Time: 07:02:33 PM PST US From: "Robert L. Nuckolls, III" Subject: Re: AeroElectric-List: Transponder Interference with Icom A-22 Comm Radio At 11:28 AM 10/29/2013, you wrote: I just installed a Sandia Transponder with an Icom A-22 handheld radio hard wired into the electrical system. On the first flight, ATC had a difficult time understanding me and I heard "clicks" in then headset while receiving. Not knowing if it was RF interference from the transponder OR feedback from the aircraft 12 volt power system, I removed the hard wire power from the radio and used the battery pack... Everything worked great. Radios of this variety are never qualified to DO160 recommendations for immunity to noise common to the vehicular dc bus. The exact nature of ATC's complaint would be good. The 'clicking' you describe is not particularly interesting. Further, the noise heard on your transmitted signal may be very different than anything you hear on receive. Is this test with engine running or not? Does it go away with the alternator off? Could you record a sample of the noise received by your listeners. Got access to a pocket recorder and second transceiver to run an experiment. Have somebody talk to you on the compromised radio so you can offer an interpretation of what you hear. I even placed the VHF receiver within a inch of the transponder antenna while it was being interrogated and it still worked fine. Since the complaint was against your transmitted signal, the experiment may not have any significance. Seems I am having some strange pulses running through the 12V system while the transponder is ON because it is eliminated when I remove acft power from it and use the battery pack. Check your transmitted signal with the radio hookd to the airplane with the transponder on/off, alternator on/of and any other electro-whizzies. QUESTION - Is there something I can do or install that will isolate electrically the Comm Radio from getting this feedback from the transponder OR is thernee something I can add to the Transponder Power feed? Not enough data for a specific suggestion. A simple noise filter may do the job but it would help to know exactly where the noise is coming from. Bob . . . ________________________________ Message 9 _____________________________________ Time: 07:22:27 PM PST US Subject: Re: AeroElectric-List: Alternator without a Battery From: Thomas E Blejwas Bob, It has taken days for me to respond because I couldn't get the website to respond to my enquiries and, consequently, I was unable to open your new drawing. Today I could! Thanks for your response. You state that you wouldn't shut down a battery unless there is smoke in the cockpit and, in which case you would shut down the alternator as well. If a battery is shorting and drawing more and more current from the alternator, why wouldn't you disconnect it or do you consider this too unlikely to design against? You ask why two batteries? I'm reconsidering. If the battery can be disconnected and the engine continues to run on only the alternator, then one battery probably meets my design goals. Thanks for the question. As you suggested, I've looked at your new drawing, but I don't think it meets all my design goals. A shorted battery can't be disconnected. I'll continue to study it w.r.t my other design goals. Thanks. Tom Sent from my iPad ------------------------------------------------------------------------------------- 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.