---------------------------------------------------------- AeroElectric-List Digest Archive --- Total Messages Posted Sat 07/20/19: 6 ---------------------------------------------------------- Today's Message Index: ---------------------- 1. 02:26 AM - Re: [OT] IFR-certified GPS Suggestions (donjohnston) 2. 06:50 AM - IFR-certified GPS Suggestions (GLEN MATEJCEK) 3. 09:25 AM - ELT antenna, BALUNS and stuff (Robert L. Nuckolls, III) 4. 01:31 PM - Re: IFR-certified GPS Suggestions (Kelly McMullen) 5. 06:12 PM - ADS-B - Garmin GDL-82 installation (Argonaut36) 6. 07:53 PM - Re: ADS-B - Garmin GDL-82 installation (Hal Benjamin) ________________________________ Message 1 _____________________________________ Time: 02:26:33 AM PST US Subject: AeroElectric-List: Re: [OT] IFR-certified GPS Suggestions From: "donjohnston" argoldman(at)aol.com wrote: > Thanks, Somewhere in the back of my mind is that there is a procedure that you have to go through to verify that the adsb is operating correctly. Plane not flying yet-- almost done (15 years). > -- I used this to verify my ADS-B install. https://adsbperformance.faa.gov/paprrequest.aspx Read this topic online here: http://forums.matronics.com/viewtopic.php?p=490436#490436 ________________________________ Message 2 _____________________________________ Time: 06:50:17 AM PST US From: GLEN MATEJCEK Subject: AeroElectric-List: IFR-certified GPS Suggestions > > That's an interesting evolution. It used to be that the only bit of > equipment on an experimental that was required to have a TSO was GPS for > terminal ops. I've spent a little time searching, and can't find any such > reference anymore. The AIM does indeed make a blanket statement with > regard to having TSO'd GPS, which is curious as the AIM isn't regulatory. > (Of course, if one finds themselves in front of an administrative law judge > due to nonconformity with the AIM one will likely be in a world of hurt, > but that's a different topic...). So, I wonder if all the folks with > non-TSO'd GPS are grandfathered somehow, or just SOL... > > ________________________________ Message 3 _____________________________________ Time: 09:25:14 AM PST US From: "Robert L. Nuckolls, III" Subject: AeroElectric-List: ELT antenna, BALUNS and stuff Got the VNA back up and running. Did some quick scans of a couple of BALUN configurations and got some amazing (or should I say consternating) results. At first blush it seems that conventional wisdom may have failed us. Need to repeat the experiments with more rigorous attention to process and calibration . . . watch this space. Got the elements fabricated for a Jim Wier ELT antenna. I'll be assembling those on a test fixture with opportunity to explore BALUN configurations . . . Bob . . . ________________________________ Message 4 _____________________________________ Time: 01:31:39 PM PST US Subject: Re: AeroElectric-List: IFR-certified GPS Suggestions From: Kelly McMullen There is an advisory circular on GPS install. I forget the first two digits, after the dash its 138a, which for most purposes can be considered regulatory. While you could get away with most anything if you declare an emergency, I wouldn't make a habit of that. I don't believe the FAA has ever "approved" of using anything but a TSO GPS. I believe you also have to have a TSO approved ELT unless you meet the exceptions like single seat. On 7/20/2019 6:48 AM, GLEN MATEJCEK wrote: > That's an interesting evolution. It used to be that the only bit of > equipment on an experimental that was required to have a TSO was GPS > for terminal ops. I've spent a little time searching, and can't > find any such reference anymore. The AIM does indeed make a blanket > statement with regard to having TSO'd GPS, which is curious as the > AIM isn't regulatory. (Of course, if one finds themselves in front > of an administrative law judge due to nonconformity with the AIM one > will likely be in a world of hurt, but that's a different > topic...). So, I wonder if all the folks with non-TSO'd GPS are > grandfathered somehow, or just SOL... > ________________________________ Message 5 _____________________________________ Time: 06:12:08 PM PST US Subject: AeroElectric-List: ADS-B - Garmin GDL-82 installation From: "Argonaut36" In my airplane there are at least 3 options for grounding the GDL-82: 1. Grounding to the avionics box that contains the electrical bus, the radio and the transponder. The box is attached with screws to lugs welded to the airplane tubular frame. Paint was removed where necessary to ensure good electrical continuity to the frame. 2. Grounding to a single screw on the firewall to which the radio, the transponder and the encoder are already grounded. 3. Grounding to a new screw on the firewall in the general area where the above mentioned ground screw is. What would be the recommended solution? Right now (before installing the GDL-82) there is some background noise in the radio, transmitting and receiving. I am concerned about the GDL-82 working properly and not making the radio worse. Thanks Read this topic online here: http://forums.matronics.com/viewtopic.php?p=490457#490457 ________________________________ Message 6 _____________________________________ Time: 07:53:47 PM PST US From: Hal Benjamin Subject: Re: AeroElectric-List: ADS-B - Garmin GDL-82 installation I grounded mine to the common forest of tabs on the firewall. All tested well on ground and in the NYC airspace. Good luck. Hal Benjamin RV4 Sent from my iPad > On Jul 20, 2019, at 9:10 PM, Argonaut36 wrote: > > > In my airplane there are at least 3 options for grounding the GDL-82: > 1. Grounding to the avionics box that contains the electrical bus, the radio and the transponder. The box is attached with screws to lugs welded to the airplane tubular frame. Paint was removed where necessary to ensure good electrical continuity to the frame. > 2. Grounding to a single screw on the firewall to which the radio, the transponder and the encoder are already grounded. > 3. Grounding to a new screw on the firewall in the general area where the above mentioned ground screw is. > What would be the recommended solution? Right now (before installing the GDL-82) there is some background noise in the radio, transmitting and receiving. I am concerned about the GDL-82 working properly and not making the radio worse. > Thanks > > > > > Read this topic online here: > > http://forums.matronics.com/viewtopic.php?p=490457#490457 > > > > > > > > > ------------------------------------------------------------------------------------- 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.