---------------------------------------------------------- AeroElectric-List Digest Archive --- Total Messages Posted Tue 03/10/09: 5 ---------------------------------------------------------- Today's Message Index: ---------------------- 1. 07:20 AM - Re: Wingtip Nav question (Larry Rosen) 2. 09:06 AM - Re: Wingtip Nav question (Tim Olson) 3. 09:25 AM - Re: Wingtip Nav question (BobsV35B@aol.com) 4. 10:15 AM - Re: Wingtip Nav question (Tim Olson) 5. 07:25 PM - Your favorite cover? (Robert L. Nuckolls, III) ________________________________ Message 1 _____________________________________ Time: 07:20:31 AM PST US From: Larry Rosen Subject: Re: AeroElectric-List: Wingtip Nav question Tim, Why don't you put the marker beacon antenna in the wing tip, just use a 40" piece of wire, and then mount the ADS-B antenna in the current marker beacon location. Larry Rosen Tim Olson wrote: > > Well thanks guys for clearing up the wording in the install > guide. It makes perfect and obvious sense that using 2 > antennas for 2 NAV's would be way better than 1 antenna > for each. > > Now for a follow-up that's a bit tougher maybe... > > I need to mount an ADS-B shark fin antenna...978mhz, > putting out 50W (similar to a transponder but those > crank out more like 150W). > > If I have the choice of: > > A) Move a perfectly working NAV Antenna in an ideal location > to a wingtip where I know the performance won't be as good, > and putting the ADS-B in place of it. > > or > > > B) Mounting the ADS-B antenna about 2' from the NAV antenna > and leaving everything as-is. > > or > > C) Moving the Marker Beacon antenna to within a few inches > of the NAV antenna, and then putting the ADS-B antenna right > where the MB currently is. > > > Which one seems most reasonable? I know you generally want > to keep those powerful transmitters away from other stuff, > with being on totally separate freq's, how bad is it to > have a 978mhz transmitter 2' from the NAV. Will the SL-30's > circuitry filter well enough to not be a problem do you think? > > Tell you what, if you're building a kit, take the time to > come up with locations for all the possible antenna types > you could ever have, because squeezing one in can be a chore > if you want to still live by the book. > > > Tim Olson - RV-10 N104CD - Flying > > > Etienne Phillips wrote: >> >> >> You are correct - but when dealing with aerials and radiation >> patterns, it doesn't matter if you're talking about transmitting or >> receiving... >> >> As a side-note, if you have a DME instrument then you do transmit, >> but it's a completely different frequency range (and therefore I'm >> guessing has it's own antenna). >> >> I agree with Bob Nuckolls though, having a single antenna, mounted in >> a clear spot, is by far the best way of improving signal quality! >> >> Good luck with your installation... >> >> On 09 Mar 2009, at 2:54 AM, Richard E. Tasker wrote: >> >>> >>> >>> They are VOR antennas for NAV radios. Last I knew the only VOR/NAV >>> transmissions come from the ground... >>> >>> Dick Tasker >>> > > ________________________________ Message 2 _____________________________________ Time: 09:06:12 AM PST US From: Tim Olson Subject: Re: AeroElectric-List: Wingtip Nav question I may end up doing that, but the current wire wouldn't reach and I'd have to extend it in the conduit to the wingtip. The other variable that I didn't mention is that the current location for my MB antenna...the one that I'd move to put in the ADS-B UAT antenna, is also right next to my APRS antenna. So I COULD end up moving 2 of them. I'm not sure I'll worry about the APRS and the UAT interfering much though, as the APRS only transmits intermittently. It would be easier to move if needed, too. The current Marker Beacon location is really a great one ofr the UAT antenna. Tim Olson - RV-10 N104CD - Flying do not archive Larry Rosen wrote: > > Tim, > Why don't you put the marker beacon antenna in the wing tip, just use a > 40" piece of wire, and then mount the ADS-B antenna in the current > marker beacon location. > > Larry Rosen > > Tim Olson wrote: >> >> Well thanks guys for clearing up the wording in the install >> guide. It makes perfect and obvious sense that using 2 >> antennas for 2 NAV's would be way better than 1 antenna >> for each. >> >> Now for a follow-up that's a bit tougher maybe... >> >> I need to mount an ADS-B shark fin antenna...978mhz, >> putting out 50W (similar to a transponder but those >> crank out more like 150W). >> >> If I have the choice of: >> >> A) Move a perfectly working NAV Antenna in an ideal location >> to a wingtip where I know the performance won't be as good, >> and putting the ADS-B in place of it. >> >> or >> >> >> B) Mounting the ADS-B antenna about 2' from the NAV antenna >> and leaving everything as-is. >> >> or >> >> C) Moving the Marker Beacon antenna to within a few inches >> of the NAV antenna, and then putting the ADS-B antenna right >> where the MB currently is. >> >> >> Which one seems most reasonable? I know you generally want >> to keep those powerful transmitters away from other stuff, >> with being on totally separate freq's, how bad is it to >> have a 978mhz transmitter 2' from the NAV. Will the SL-30's >> circuitry filter well enough to not be a problem do you think? >> >> Tell you what, if you're building a kit, take the time to >> come up with locations for all the possible antenna types >> you could ever have, because squeezing one in can be a chore >> if you want to still live by the book. >> >> >> Tim Olson - RV-10 N104CD - Flying >> >> >> >> Etienne Phillips wrote: >>> >>> >>> You are correct - but when dealing with aerials and radiation >>> patterns, it doesn't matter if you're talking about transmitting or >>> receiving... >>> >>> As a side-note, if you have a DME instrument then you do transmit, >>> but it's a completely different frequency range (and therefore I'm >>> guessing has it's own antenna). >>> >>> I agree with Bob Nuckolls though, having a single antenna, mounted in >>> a clear spot, is by far the best way of improving signal quality! >>> >>> Good luck with your installation... >>> >>> On 09 Mar 2009, at 2:54 AM, Richard E. Tasker wrote: >>> >>>> >>>> >>>> They are VOR antennas for NAV radios. Last I knew the only VOR/NAV >>>> transmissions come from the ground... >>>> >>>> Dick Tasker >>>> >> >> >> >> >> > > > > > ________________________________ Message 3 _____________________________________ Time: 09:25:34 AM PST US From: BobsV35B@aol.com Subject: Re: AeroElectric-List: Wingtip Nav question Good Morning Larry, I mentioned this yesterday, but if I may repeat, why would anyone want a marker beacon receiver? The only approach I can think of that uses a marker beacon to supply a lower MDA is the LOC-D at KSEE, Gillespie Field, San Diego. The fan marker there is called GRIGG and it has been out of service awaiting repair parts for several years. Those who have an IFR legal GPS can use it to locate the GRIGG intersection in lieu of the failed fan marker. Even the KSEE LOC-D approach could be executed without the marker or a means of determining it's position, but it would be to a higher MDA If you have any GPS, even a VFR one, it can supply situational awareness much better than a marker. An IFR approved GPS with a current database, can be legally used in lieu of any still functioning marker beacon. The FAA removed the marker beacon as a required portion of the ILS several years ago. They are slowly being phased out. Happy Skies Old Bob AKA Bob Siegfried Ancient Aviator 628 West 86th Street Downers Grove, IL 60516 630 985-8502 Stearman N3977A Brookeridge Air Park LL22 In a message dated 3/10/2009 9:22:21 A.M. Central Daylight Time, N205EN@gmail.com writes: Tim, Why don't you put the marker beacon antenna in the wing tip, just use a 40" piece of wire, and then mount the ADS-B antenna in the current marker beacon location. Larry Rosen **************A Good Credit Score is 700 or Above. See yours in just 2 easy steps! %3D62%26bcd%3DfebemailfooterNO62) ________________________________ Message 4 _____________________________________ Time: 10:15:14 AM PST US From: Tim Olson Subject: Re: AeroElectric-List: Wingtip Nav question I hear ya Bob...didn't mean to ignore it. You make a good point. The thing I can't answer is....if I have a MB receiver and I don't put an antenna of some sort on it, could that cause any potential problems. Probably not, but, I figure I've already got the antenna, and the wire run, and so I may as well terminate it somewhere. Also, even though you don't need it to get lower minimums, it still IS an audible source of knowing when you pass certain points, so although it has little value, it isn't really worthless. If I were starting over I'd probably still wire it in to a wingtip or something, just to terminate it since I have the receiver. But, it certainly is one of the things I'd miss the least in the panel. Probably even less than an ADF. :) Tim Olson - RV-10 N104CD - Flying do not archive BobsV35B@aol.com wrote: > Good Morning Larry, > > I mentioned this yesterday, but if I may repeat, why would anyone want a > marker beacon receiver? > > The only approach I can think of that uses a marker beacon to supply a > lower MDA is the LOC-D at KSEE, Gillespie Field, San Diego. The fan > marker there is called GRIGG and it has been out of service awaiting > repair parts for several years. Those who have an IFR legal GPS can use > it to locate the GRIGG intersection in lieu of the failed fan marker. > > Even the KSEE LOC-D approach could be executed without the marker or a > means of determining it's position, but it would be to a higher MDA > > If you have any GPS, even a VFR one, it can supply situational awareness > much better than a marker. An IFR approved GPS with a current database, > can be legally used in lieu of any still functioning marker beacon. > > The FAA removed the marker beacon as a required portion of the ILS > several years ago. They are slowly being phased out. > > Happy Skies > > Old Bob > AKA > Bob Siegfried > Ancient Aviator > 628 West 86th Street > Downers Grove, IL 60516 > 630 985-8502 > Stearman N3977A > Brookeridge Air Park LL22 > > In a message dated 3/10/2009 9:22:21 A.M. Central Daylight Time, > N205EN@gmail.com writes: > > Tim, > Why don't you put the marker beacon antenna in the wing tip, just use a > 40" piece of wire, and then mount the ADS-B antenna in the current > marker beacon location. > > Larry Rosen > > > ------------------------------------------------------------------------ > *A > G00126575x1219671244x1201345076/aol?redir=http:%2F%2Fwww.freecreditreport.com%2Fpm%2Fdefault.aspx%3Fsc%3D668072%26hmpgID%3D62%26bcd%3DfebemailfooterNO62"> > See yours in just 2 easy steps!* > > * > > > * ________________________________ Message 5 _____________________________________ Time: 07:25:33 PM PST US From: "Robert L. Nuckolls, III" Subject: AeroElectric-List: Your favorite cover? Here's some options based on pictures so kindly submitted to date: http://www.aeroelectric.com/Covers/ I guess we can make this a popularity contest. Kindly mail your votes directly to me at: mailto:nuckolls.bob@aeroelectric.com so as to not clutter up the archives . . . Any additional pictures are welcome too! Bob . . . ----------------------------------------) ( . . . a long habit of not thinking ) ( a thing wrong, gives it a superficial ) ( appearance of being right . . . ) ( ) ( -Thomas Paine 1776- ) ---------------------------------------- ------------------------------------------------------------------------------------- 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.