---------------------------------------------------------- AeroElectric-List Digest Archive --- Total Messages Posted Fri 04/15/22: 2 ---------------------------------------------------------- Today's Message Index: ---------------------- 1. 05:52 AM - Re: A fascinating watch . . . (Larry Mac Donald) 2. 06:55 AM - Re: AeroElectric-List Digest: 6 Msgs - 04/13/22 (Chuck Stroh) ________________________________ Message 1 _____________________________________ Time: 05:52:05 AM PST US From: Larry Mac Donald Subject: Re: AeroElectric-List: A fascinating watch . . . That film and about four others are blogs on U-tube. Just search =9Cbob hoover=9D. > On Apr 14, 2022, at 10:34 PM, Charles Kuss wrote: > > How exactly am I supposed to watch this on Amazon Prime when I have no idea what the title is???? > > > On Thursday, April 14, 2022, 07:58:31 PM EDT, Robert L. Nuckolls, III wrote: > > > > Get a bowl of popcorn and a large enough jug to last > 80 minutes. Found this documentary to be rather > spell binding . . . > > https://youtu.be/2ayA2UE-p8M > > > > Bob . . . > > Un impeachable logic: George Carlin asked, "If blackboxes > survive crashes, why don't they make the whole airplane > out of that stuff?" > ________________________________ Message 2 _____________________________________ Time: 06:55:43 AM PST US From: Chuck Stroh Subject: AeroElectric-List: Re: AeroElectric-List Digest: 6 Msgs - 04/13/22 If you have TCAS you already have a transponder that has an antenna on the top and bottom of the aircraft. On Thursday, April 14, 2022, 07:00:15 PM CDT, AeroElectric-List Digest Server wrote: * ======================== =C2- Online Versions of Today's List Digest Archive ======================== Today's complete AeroElectric-List Digest can also be found in either of th e two Web Links listed below.=C2- The .html file includes the Digest format ted in HTML for viewing with a web browser and features Hyperlinked Indexes and Message Navigation.=C2- The .txt file includes the plain ASCII versio n of the AeroElectric-List Digest and can be viewed with a generic text edito r such as Notepad or with a web browser. HTML Version: =C2- =C2- http://www.matronics.com/digest/digestview.php?Style=82701& View=html&Chapter 22-04-13&Archive=AeroElectric Text Version: =C2- =C2- http://www.matronics.com/digest/digestview.php?Style=82701& View=txt&Chapter 22-04-13&Archive=AeroElectric ======================== ======================= =C2- EMail Version of Today's List Digest Archive ======================== ======================= =C2- =C2- =C2- =C2- =C2- ---------------------------------------- ------------------ =C2- =C2- =C2- =C2- =C2- =C2- =C2- =C2- =C2- =C2- =C2 - =C2- =C2- AeroElectric-List Digest Archive =C2- =C2- =C2- =C2- =C2- =C2- =C2- =C2- =C2- =C2- =C2 - =C2- =C2- =C2- =C2- =C2- =C2- =C2- =C2- --- =C2- =C2- =C2- =C2- =C2- =C2- =C2- =C2- =C2- =C2- Total Messages Posted Wed 04/13/22: 6 =C2- =C2- =C2- =C2- =C2- ---------------------------------------- ------------------ Today's Message Index: ---------------------- =C2- =C2- 1. 07:38 AM - Re: Transponder antenna ground plane=C2- (Eri c Page) =C2- =C2- 2. 09:22 AM - Re: Re: Transponder antenna ground plane=C2- (Robert L. Nuckolls, III) =C2- =C2- 3. 10:35 AM - Re: Re: Transponder antenna ground plane=C2- (Charlie England) =C2- =C2- 4. 11:37 AM - A fascinating watch . . .=C2- (Robert L. Nuck olls, III) =C2- =C2- 5. 11:52 AM - Re: A fascinating watch . . .=C2- (Daniel Cla rk) =C2- =C2- 6. 01:13 PM - Re: A fascinating watch . . .=C2- (Bill Settl e) ________________________________=C2- Message 1=C2- ____________________ _________________ Time: 07:38:49 AM PST US Subject: AeroElectric-List: Re: Transponder antenna ground plane From: "Eric Page" Yes, I seem to remember reading something about that.=C2- I have no plans to fly into Canada, but I wonder what will be required, hardware-wise, to satisfy their requirement.=C2- I presume you would need a transponder designed for mult iple antennas. It looks like uAvionix's tailBeaconX satisfies the Canadians, but beyond that, I have no idea! Read this topic online here: http://forums.matronics.com/viewtopic.php?p=506545#506545 ________________________________=C2- Message 2=C2- ____________________ _________________ Time: 09:22:21 AM PST US From: "Robert L. Nuckolls, III" Subject: Re: AeroElectric-List: Re: Transponder antenna ground plane At 09:41 PM 4/12/2022, you wrote: > >Next year Canada is going to require aircraft flying in Class A & B >airspace to be able to send transponder signals to satellites.=C2- This >requirement can be met either through antenna diversity (the use of >a top and bottom antenna) or with a single antenna that is capable >of transmitting both towards the ground and up towards satellites. >=C2- I have never seen transponder antennas on top of airplanes > either.=C2- But chances are that an antenna on top would work just as > well as one on the bottom. =C2- =C2- The quater-wave, ground-plane antenna has a =C2- =C2- radiation patter like shown in this illustration. =C2- =C2- Very attenuated response 'below' the ground plane. =C2- =C2- Probably even more attenuation on a 'large' ground =C2- =C2- plane like an aircraft skin. =C2- =C2- Looking at the elevation pattern we see the major =C2- =C2- lobe is displaced about 30 degrees off the ground =C2- =C2- plane . . . i.e. favoring ground based stations =C2- =C2- when mounted upside down. Response out to the =C2- =C2- horizon is only down 3db . . . =C2- =C2- Talking to satellites? Got any links to =C2- =C2- expand on that? I'm wondering what service is =C2- =C2- expected to use xponder data . . . and for =C2- =C2- what purpose. =C2- Bob . . . =C2- Un impeachable logic: George Carlin asked, "If black boxes =C2- survive crashes, why don't they make the whole airplane =C2- out of that stuff?" ________________________________=C2- Message 3=C2- ____________________ _________________ Time: 10:35:42 AM PST US Subject: Re: AeroElectric-List: Re: Transponder antenna ground plane From: Charlie England On 4/13/2022 11:17 AM, Robert L. Nuckolls, III wrote: > At 09:41 PM 4/12/2022, you wrote: >> >> Next year Canada is going to require aircraft flying in Class A & B >> airspace to be able to send transponder signals to satellites. This >> requirement can be met either through antenna diversity (the use of a >> top and bottom antenna) or with a single antenna that is capable of >> transmitting both towards the ground and up towards satellites. >>=C2- I have never seen transponder antennas on top of airplanes either. >> But chances are that an antenna on top would work just as well as one >> on the bottom. > >=C2- The quater-wave, ground-plane antenna has a >=C2- radiation patter like shown in this illustration. >=C2- Very attenuated response 'below' the ground plane. >=C2- Probably even more attenuation on a 'large' ground >=C2- plane like an aircraft skin. > >=C2- Looking at the elevation pattern we see the major >=C2- lobe is displaced about 30 degrees off the ground >=C2- plane . . . i.e. favoring ground based stations >=C2- when mounted upside down. Response out to the >=C2- horizon is only down 3db . . . > >=C2- Talking to satellites? Got any links to >=C2- expand on that? I'm wondering what service is >=C2- expected to use xponder data . . . and for >=C2- what purpose. It's just ADS-B, with a/c transmissions received by satellites. To the FAA: Can I get a 'duh...'? https://aireon.com/resources/overview-materials/its-just-ads-b/ Charlie -- This email has been checked for viruses by Avast antivirus software. https://www.avast.com/antivirus ________________________________=C2- Message 4=C2- ____________________ _________________ Time: 11:37:52 AM PST US From: "Robert L. Nuckolls, III" Subject: AeroElectric-List: A fascinating watch . . . Get a bowl of popcorn and a large enough jug to last 80 minutes. Found this documentary to be rather spell binding . . . https://youtu.be/2ayA2UE-p8M =C2- Bob . . . =C2- Un impeachable logic: George Carlin asked, "If black boxes =C2- survive crashes, why don't they make the whole airplane =C2- out of that stuff?" ________________________________=C2- Message 5=C2- ____________________ _________________ Time: 11:52:46 AM PST US Subject: Re: AeroElectric-List: A fascinating watch . . . From: "Daniel Clark" Great documentary on Bob Hoover ! > > Get a bowl of popcorn and a large enough jug to last > 80 minutes. Found this documentary to be rather > spell binding . . . > > https://youtu.be/2ayA2UE-p8M > > >=C2- =C2- Bob . . . > >=C2- =C2- Un impeachable logic: George Carlin asked, "If black boxes >=C2- =C2- survive crashes, why don't they make the whole airplane >=C2- =C2- out of that stuff?" > ________________________________=C2- Message 6=C2- ____________________ _________________ Time: 01:13:07 PM PST US From: "Bill Settle" Subject: RE: AeroElectric-List: A fascinating watch . . . Bob, Thanks for sharing! Bill Settle From: owner-aeroelectric-list-server@matronics.com On Behalf Of Robert L. Nuckolls, III Sent: Wednesday, April 13, 2022 2:37 PM Subject: AeroElectric-List: A fascinating watch . . . Get a bowl of popcorn and a large enough jug to last 80 minutes. Found this documentary to be rather spell binding . . . https://youtu.be/2ayA2UE-p8M =C2- Bob . . . =C2- Un impeachable logic: George Carlin asked, "If black boxes =C2- survive crashes, why don't they make the whole airplane =C2- out of that stuff?" - S - WIKI - - =C2- =C2- =C2- =C2- =C2- -Matt Dralle, List Admin. ------------------------------------------------------------------------------------- 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.