---------------------------------------------------------- RV10-List Digest Archive --- Total Messages Posted Sat 05/15/10: 16 ---------------------------------------------------------- Today's Message Index: ---------------------- 1. 12:34 AM - Re: Re: Swivel Overhead LED cabin lights (Werner Schneider) 2. 01:03 AM - Re: Swivel Overhead LED cabin lights (Michael Wellenzohn) 3. 05:06 AM - Re: Re: Swivel Overhead LED cabin lights (Werner Schneider) 4. 01:39 PM - Re: Re: Cabin frame and Mcmaster-Carr door seals (Bill Mauledriver Watson) 5. 04:37 PM - Transponder Antenna Location (jkreidler) 6. 04:52 PM - Re: Transponder Antenna Location (N777TY) 7. 05:11 PM - Re: Transponder Antenna Location (jkreidler) 8. 06:01 PM - Re: Transponder Antenna Location (Dick & Vicki Sipp) 9. 06:02 PM - Re: Re: Transponder Antenna Location (Kelly McMullen) 10. 06:07 PM - Re: Transponder Antenna Location (Kelly McMullen) 11. 06:32 PM - Re: Re: Transponder Antenna Location (Marcus Cooper) 12. 06:32 PM - Re: Re: Transponder Antenna Location (Marcus Cooper) 13. 06:33 PM - Re: Transponder Antenna Location (Jesse Saint) 14. 06:52 PM - Re: Transponder Antenna Location (jkreidler) 15. 07:18 PM - Re: Re: Transponder Antenna Location (Kelly McMullen) 16. 07:35 PM - Re: Transponder Antenna Location (jkreidler) ________________________________ Message 1 _____________________________________ Time: 12:34:35 AM PST US From: Werner Schneider Subject: Re: RV10-List: Re: Swivel Overhead LED cabin lights Michael, I can help you if Jim's advice brings you not the correct outcome. Distrelec sells power bricks which gives you a stabilized output voltage of 12V (up to 3A) I use them on my moving map display, input varies, mine allows 32-9V stabilized 12 V output. That will always work Werner On 15.05.2010 01:06, Jim Combs wrote: > It depends. > > IF there is a current regulator in the LED assembly, then you could plug > directly into the mail bus (which will on the order of 14 Volts during > normal operation). If they have not installed a regulator then you may > burn out the LED's or shorten their life. > > The way to find out is to connect them to a bench / adjustable power > supply and bring up the voltage slowly while watching the brightness of > the LED. If you get to say 8 volts the brightness of the LED reaches a > peak and stays constant for the rest of the voltage change, then yes you > have a regulator and it's working. At that point you should be able to > connect directly to the 12 V bus. If not, then the LED will be brighter > and you risk shortening the life. > > if they are not too expensive then just plug it in and go for it. > > Jim C (N312F - Flying!) > > On Fri, May 14, 2010 at 6:07 PM, Michael Wellenzohn > > wrote: > > > > > OK I finally found the light that I want to use instead of the vents > in the overhead console. Now here is the question to all electrical > engineers. > The LED light comes with an LED driver (transformator) which reduces > the 230V (AC) into 12V DC 350mA. > Now here is my question. > Is it possible to leave the the LED driver out and connect the LED > directly to the battery of course with a fuse in between? > > Thanks > Michael > > -------- > RV-10 builder (interior,avionics, wiring) > #511 > > > Read this topic online here: > > http://forums.matronics.com/viewtopic.php?p=297784#297784 > > > Attachments: > > http://forums.matronics.com//files/image_565000_0_919.jpg > > > ========== > arget="_blank">http://www.matronics.com/Navigator?RV10-List > ========== > http://forums.matronics.com > ========== > le, List Admin. > ="_blank">http://www.matronics.com/contribution > ========== > > > * > > > * ________________________________ Message 2 _____________________________________ Time: 01:03:09 AM PST US Subject: RV10-List: Re: Swivel Overhead LED cabin lights From: "Michael Wellenzohn" Hallo Werner danke Dir knntest Du mir bitte eventuell die Artikenummer geben. Danke und Gru Michael -------- RV-10 builder (interior,avionics, wiring) #511 Read this topic online here: http://forums.matronics.com/viewtopic.php?p=297810#297810 ________________________________ Message 3 _____________________________________ Time: 05:06:45 AM PST US From: Werner Schneider Subject: Re: RV10-List: Re: Swivel Overhead LED cabin lights Ciao Michael, such bei Distrelec nach Traco Power dann kommt es darauf an, wieviel Watt Du brauchts z.B. 3x350mA =1.05 A bei 12V = 13W Einganspannung 9-18V (sollte reichen) TEL 15-1212 Art. Nr. : 361322 am besten schaust das Datenblatt an Gruss Werner On 15.05.2010 10:02, Michael Wellenzohn wrote: > --> RV10-List message posted by: "Michael Wellenzohn" > > Hallo Werner > danke Dir knntest Du mir bitte eventuell die Artikenummer geben. > Danke und Gru > Michael > > -------- > RV-10 builder (interior,avionics, wiring) > #511 > > > Read this topic online here: > > http://forums.matronics.com/viewtopic.php?p=297810#297810 > > ________________________________ Message 4 _____________________________________ Time: 01:39:21 PM PST US From: Bill Mauledriver Watson Subject: Re: RV10-List: Re: Cabin frame and Mcmaster-Carr door seals You've probably already received some photos but here are mine jayb wrote: > > Photos? Especially of running the seal around the door hinges and/or strut area. > Thanks, > Jay > > > Read this topic online here: > > http://forums.matronics.com/viewtopic.php?p=297349#297349 > > > ________________________________ Message 5 _____________________________________ Time: 04:37:51 PM PST US Subject: RV10-List: Transponder Antenna Location From: "jkreidler" We have been told on more than one occasion that ATC was not seeing our transponder. We have a Garmin GTX327 installed. We are wondering if our antenna location might be the problem, our antenna is located in the center of the airplane just behind the firewall. At the time we installed the antenna it looked like a good spot, but that was before we had the exhaust installed. Not sure if the location is the problem or not, just wondering of anyone else has experienced any problems with the antenna in this location. Thoughts appreciated. -------- Jason Kreidler 4 Partner Build - Sheboygan Falls, WI Tony Kolar, Kyle Hokel, Wayne Elser, Jason Kreidler N44YH - Flying - #40617 Read this topic online here: http://forums.matronics.com/viewtopic.php?p=297856#297856 ________________________________ Message 6 _____________________________________ Time: 04:52:20 PM PST US Subject: RV10-List: Re: Transponder Antenna Location From: "N777TY" I doubt that's the problem.. Mine's on the right side.. maybe 10 inches to the right of the centerline (so it's not in the exhaust path)... and it works perfect.. never skipped a beat.. Have you had your txp checked per 91.413? Did it pass that inspection? -------- RV-7A N777TY Read this topic online here: http://forums.matronics.com/viewtopic.php?p=297858#297858 ________________________________ Message 7 _____________________________________ Time: 05:11:19 PM PST US Subject: RV10-List: Re: Transponder Antenna Location From: "jkreidler" Yes, we had it inspected. Our antenna is between the exhaust stacks and the exhaust exits behind the antenna. -------- Jason Kreidler 4 Partner Build - Sheboygan Falls, WI Tony Kolar, Kyle Hokel, Wayne Elser, Jason Kreidler N44YH - Flying - #40617 Read this topic online here: http://forums.matronics.com/viewtopic.php?p=297859#297859 ________________________________ Message 8 _____________________________________ Time: 06:01:30 PM PST US From: "Dick & Vicki Sipp" Subject: Re: RV10-List: Transponder Antenna Location I occasionally get the same complaint. I would say on about 5-10% of the controller changes. It seems to occur more often when headed directly at the antenna sight and long or short range only rather than medium. It almost always returns for the controller as the position relative to the sight changes. The antenna is on the belly centerline about 14 inches aft of the firewall. Dick Sipp N110DV -------------------------------------------------- From: "jkreidler" Sent: Saturday, May 15, 2010 7:37 PM Subject: RV10-List: Transponder Antenna Location > > > We have been told on more than one occasion that ATC was not seeing our > transponder. We have a Garmin GTX327 installed. We are wondering if our > antenna location might be the problem, our antenna is located in the > center of the airplane just behind the firewall. At the time we installed > the antenna it looked like a good spot, but that was before we had the > exhaust installed. Not sure if the location is the problem or not, just > wondering of anyone else has experienced any problems with the antenna in > this location. Thoughts appreciated. > > -------- > Jason Kreidler > 4 Partner Build - Sheboygan Falls, WI > Tony Kolar, Kyle Hokel, Wayne Elser, Jason Kreidler > N44YH - Flying - #40617 > > > Read this topic online here: > > http://forums.matronics.com/viewtopic.php?p=297856#297856 > > > ________________________________ Message 9 _____________________________________ Time: 06:02:08 PM PST US Subject: Re: RV10-List: Re: Transponder Antenna Location From: Kelly McMullen It is possible the exhaust stacks are shielding the antenna in that case. Shouldn't be to hard to patch that hole and move antenna a foot or so to right or left of exhaust. On Sat, May 15, 2010 at 5:10 PM, jkreidler wrote: > > Yes, we had it inspected. > > Our antenna is between the exhaust stacks and the exhaust exits behind the antenna. > > -------- > Jason Kreidler > 4 Partner Build - Sheboygan Falls, WI > Tony Kolar, Kyle Hokel, Wayne Elser, Jason Kreidler > N44YH - Flying - #40617 > > > Read this topic online here: > > http://forums.matronics.com/viewtopic.php?p=297859#297859 > > ________________________________ Message 10 ____________________________________ Time: 06:07:33 PM PST US Subject: Re: RV10-List: Transponder Antenna Location From: Kelly McMullen I'd be checking the antenna cable before I worried about the antenna location. It isn't unusual to find a loose antenna cable in those situations. If nothing obvious, ask avionics shop to do a field check of the transponder, where they observe the output with a small handheld receiver that will indicate output power. You should have had a check like that very early in your flight test phase. On Sat, May 15, 2010 at 4:37 PM, jkreidler wrote: > > We have been told on more than one occasion that ATC was not seeing our transponder. We have a Garmin GTX327 installed. We are wondering if our antenna location might be the problem, our antenna is located in the center of the airplane just behind the firewall. At the time we installed the antenna it looked like a good spot, but that was before we had the exhaust installed. Not sure if the location is the problem or not, just wondering of anyone else has experienced any problems with the antenna in this location. Thoughts appreciated. > > -------- > Jason Kreidler > 4 Partner Build - Sheboygan Falls, WI > Tony Kolar, Kyle Hokel, Wayne Elser, Jason Kreidler > N44YH - Flying - #40617 > > > Read this topic online here: > > http://forums.matronics.com/viewtopic.php?p=297856#297856 > > ________________________________ Message 11 ____________________________________ Time: 06:32:30 PM PST US From: "Marcus Cooper" Subject: RE: RV10-List: Re: Transponder Antenna Location Just speculating, but I wonder with your antenna that far forward if you are getting some issues from the exhaust pipes? As I mentioned previously mine is a bit further back and while it does get a little dirty, it works great. Marcus Do not archive -----Original Message----- From: owner-rv10-list-server@matronics.com [mailto:owner-rv10-list-server@matronics.com] On Behalf Of jkreidler Sent: Saturday, May 15, 2010 8:11 PM Subject: RV10-List: Re: Transponder Antenna Location Yes, we had it inspected. Our antenna is between the exhaust stacks and the exhaust exits behind the antenna. -------- Jason Kreidler 4 Partner Build - Sheboygan Falls, WI Tony Kolar, Kyle Hokel, Wayne Elser, Jason Kreidler N44YH - Flying - #40617 Read this topic online here: http://forums.matronics.com/viewtopic.php?p=297859#297859 ________________________________ Message 12 ____________________________________ Time: 06:32:30 PM PST US From: "Marcus Cooper" Subject: RE: RV10-List: Re: Transponder Antenna Location Mine is in the same location, about a foot aft of the firewall, with the same xpdr. No issues to date with 450 hours. Marcus Do not archive -----Original Message----- From: owner-rv10-list-server@matronics.com [mailto:owner-rv10-list-server@matronics.com] On Behalf Of N777TY Sent: Saturday, May 15, 2010 7:52 PM Subject: RV10-List: Re: Transponder Antenna Location I doubt that's the problem.. Mine's on the right side.. maybe 10 inches to the right of the centerline (so it's not in the exhaust path)... and it works perfect.. never skipped a beat.. Have you had your txp checked per 91.413? Did it pass that inspection? -------- RV-7A N777TY Read this topic online here: http://forums.matronics.com/viewtopic.php?p=297858#297858 ________________________________ Message 13 ____________________________________ Time: 06:33:47 PM PST US Subject: Re: RV10-List: Transponder Antenna Location From: Jesse Saint I've never seen a problem with the antenna right where you have it. I'd also check the coax running to the antenna. How high do you normally fly? The only problem I've noticed is in a specific area about 50 miles east of our home airport here, so it could have something to do with the radar coverage. I assume you've already verified that it isn't always in the same geographic area. do not archive Jesse Saint Saint Aviation, Inc. jesse@saintaviation.com Cell: 352-427-0285 Fax: 815-377-3694 On May 15, 2010, at 7:37 PM, jkreidler wrote: > > We have been told on more than one occasion that ATC was not seeing our transponder. We have a Garmin GTX327 installed. We are wondering if our antenna location might be the problem, our antenna is located in the center of the airplane just behind the firewall. At the time we installed the antenna it looked like a good spot, but that was before we had the exhaust installed. Not sure if the location is the problem or not, just wondering of anyone else has experienced any problems with the antenna in this location. Thoughts appreciated. > > -------- > Jason Kreidler > 4 Partner Build - Sheboygan Falls, WI > Tony Kolar, Kyle Hokel, Wayne Elser, Jason Kreidler > N44YH - Flying - #40617 > > > > > Read this topic online here: > > http://forums.matronics.com/viewtopic.php?p=297856#297856 > > > > > > > > > > ________________________________ Message 14 ____________________________________ Time: 06:52:32 PM PST US Subject: RV10-List: Re: Transponder Antenna Location From: "jkreidler" Kelly, we did have the typical inspection performed where he sets up a tests apparatus, but that is done in the shop. Is there another way they test? We have not narrowed it to a specific geographic location, it seems to happen at random. Our suspicion is that the antenna is being shadowed by the exhaust pipes. We were going to move the antenna back a foot or so, but wanted to get some feedback before making an assumption that that is the real problem. If others have it in the same location and are not having the problem then we would need to dig deeper. We did verify the cables and connections were good. -------- Jason Kreidler 4 Partner Build - Sheboygan Falls, WI Tony Kolar, Kyle Hokel, Wayne Elser, Jason Kreidler N44YH - Flying - #40617 Read this topic online here: http://forums.matronics.com/viewtopic.php?p=297869#297869 ________________________________ Message 15 ____________________________________ Time: 07:18:39 PM PST US Subject: Re: RV10-List: Re: Transponder Antenna Location From: Kelly McMullen Yes, there is a hand held ramp checker. They are supposed to test the full system, which means receiving the signal from the antenna, not connected to a load on the bench. On Sat, May 15, 2010 at 6:52 PM, jkreidler wrote: > > Kelly, we did have the typical inspection performed where he sets up a tests apparatus, but that is done in the shop. Is there another way they test? > > We have not narrowed it to a specific geographic location, it seems to happen at random. Our suspicion is that the antenna is being shadowed by the exhaust pipes. We were going to move the antenna back a foot or so, but wanted to get some feedback before making an assumption that that is the real problem. If others have it in the same location and are not having the problem then we would need to dig deeper. We did verify the cables and connections were good. > > -------- > Jason Kreidler > 4 Partner Build - Sheboygan Falls, WI > Tony Kolar, Kyle Hokel, Wayne Elser, Jason Kreidler > N44YH - Flying - #40617 > > > Read this topic online here: > > http://forums.matronics.com/viewtopic.php?p=297869#297869 > > ________________________________ Message 16 ____________________________________ Time: 07:35:05 PM PST US Subject: RV10-List: Re: Transponder Antenna Location From: "jkreidler" They did test the transponder in the airplane with a receiving unit set up away from the airplane in the hangar. Not a bench test... Do Not Archive -------- Jason Kreidler 4 Partner Build - Sheboygan Falls, WI Tony Kolar, Kyle Hokel, Wayne Elser, Jason Kreidler N44YH - Flying - #40617 Read this topic online here: http://forums.matronics.com/viewtopic.php?p=297872#297872 ------------------------------------------------------------------------------------- Other Matronics Email List Services ------------------------------------------------------------------------------------- Post A New Message rv10-list@matronics.com UN/SUBSCRIBE http://www.matronics.com/subscription List FAQ http://www.matronics.com/FAQ/RV10-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/rv10-list Browse Digests http://www.matronics.com/digest/rv10-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.