---------------------------------------------------------- Avionics-List Digest Archive --- Total Messages Posted Fri 09/25/15: 5 ---------------------------------------------------------- Today's Message Index: ---------------------- 1. 03:42 AM - Garmin Brain Teaser... 320A Transponder issue.... (SIDESLIP) 2. 03:58 AM - Re: Garmin Brain Teaser... 320A Transponder issue.... (William Halverson) 3. 04:05 AM - Re: Garmin Brain Teaser... 320A Transponder issue.... (SIDESLIP) 4. 06:18 AM - Re: Garmin Brain Teaser... 320A Transponder issue.... (Charlie England) 5. 09:43 AM - Re: Garmin Brain Teaser... 320A Transponder issue.... (David Lloyd) ________________________________ Message 1 _____________________________________ Time: 03:42:20 AM PST US Subject: Avionics-List: Garmin Brain Teaser... 320A Transponder issue.... From: "SIDESLIP" Avionics experts can't seem to help.... Maybe someone here can. Mounted in a Zodiac 601 XL-B is the above Transponder and encoder. Avionics experts tested it on the ground, no engine running. Antenna is shielded. Turned on, and ran tests. PERFECT signal and perfect parameters. HOWEVER.... In flight, ATC CANNOT get ANY read on me for about 15-20mins. But they do get a read eventually for the most part. Sometimes they get me as soon as I hit 2000'asl. (460' elevation). Now.... This is secondary radar out of Toronto, approx 45sm away. Two days ago, I took off, no read, not even Mode A. Nada. Made a 9 min flight north, then east further away from the radar station and after about 15mins, she got a perfect signal on me. Transponder matched my altitude and Ground speed no problem. Again.... Avionics specialist ran the system through extensive testing and the second we fire it up, and run it through its paces, comes back ultra strong. No issues. Any idea?! Cheers! Chad -------- C-GYXQ. 912ULS. 601XL-B Read this topic online here: http://forums.matronics.com/viewtopic.php?p=447428#447428 ________________________________ Message 2 _____________________________________ Time: 03:58:26 AM PST US Subject: Re: Avionics-List: Garmin Brain Teaser... 320A Transponder issue.... From: William Halverson How does it work in a different a/c? Typos courtesy of Siri > On Sep 25, 2015, at 06:40, SIDESLIP wrote: > > > Avionics experts can't seem to help.... Maybe someone here can. Mounted in a Zodiac 601 XL-B is the above Transponder and encoder. Avionics experts tested it on the ground, no engine running. Antenna is shielded. Turned on, and ran tests. PERFECT signal and perfect parameters. > > HOWEVER.... > > In flight, ATC CANNOT get ANY read on me for about 15-20mins. But they do get a read eventually for the most part. Sometimes they get me as soon as I hit 2000'asl. (460' elevation). Now.... This is secondary radar out of Toronto, approx 45sm away. Two days ago, I took off, no read, not even Mode A. Nada. Made a 9 min flight north, then east further away from the radar station and after about 15mins, she got a perfect signal on me. Transponder matched my altitude and Ground speed no problem. Again.... Avionics specialist ran the system through extensive testing and the second we fire it up, and run it through its paces, comes back ultra strong. No issues. > > Any idea?! > > Cheers! > > Chad > > -------- > C-GYXQ. 912ULS. 601XL-B > > > > > Read this topic online here: > > http://forums.matronics.com/viewtopic.php?p=447428#447428 > > > > > > > > > > > ________________________________ Message 3 _____________________________________ Time: 04:05:17 AM PST US Subject: Avionics-List: Re: Garmin Brain Teaser... 320A Transponder issue.... From: "SIDESLIP" I have no way of trying it. No one I know has the same TX. Cheers! Chad -------- C-GYXQ. 912ULS. 601XL-B Read this topic online here: http://forums.matronics.com/viewtopic.php?p=447430#447430 ________________________________ Message 4 _____________________________________ Time: 06:18:56 AM PST US Subject: Re: Avionics-List: Garmin Brain Teaser... 320A Transponder issue.... From: Charlie England On September 25, 2015 5:40:22 AM CDT, SIDESLIP wrote: > >Avionics experts can't seem to help.... Maybe someone here can. Mounted >in a Zodiac 601 XL-B is the above Transponder and encoder. Avionics >experts tested it on the ground, no engine running. Antenna is >shielded. Turned on, and ran tests. PERFECT signal and perfect >parameters. > >HOWEVER.... > >In flight, ATC CANNOT get ANY read on me for about 15-20mins. But they >do get a read eventually for the most part. Sometimes they get me as >soon as I hit 2000'asl. (460' elevation). Now.... This is secondary >radar out of Toronto, approx 45sm away. Two days ago, I took off, no >read, not even Mode A. Nada. Made a 9 min flight north, then east >further away from the radar station and after about 15mins, she got a >perfect signal on me. Transponder matched my altitude and Ground speed >no problem. Again.... Avionics specialist ran the system through >extensive testing and the second we fire it up, and run it through its >paces, comes back ultra strong. No issues. > >Any idea?! > >Cheers! > >Chad > >-------- >C-GYXQ. 912ULS. 601XL-B > > >Read this topic online here: > >http://forums.matronics.com/viewtopic.php?p=447428#447428 > > Pull the transponder and check the front edge of the tray. Make sure it's flush with the front side of the panel. If not, then fix it. Then make sure that the transponder seats completely when you reinstall it. Check operation on the ground with the engine running. -- Sent from my Android device with K-9 Mail. Please excuse my brevity. ________________________________ Message 5 _____________________________________ Time: 09:43:12 AM PST US From: "David Lloyd" Subject: Re: Avionics-List: Garmin Brain Teaser... 320A Transponder issue.... Keep in mind that parts of this system have a stabilization heater associa ted in the transponder system. Sometimes I have seen those take more than 10 mins. to get the altitude encoder to stabilize at a fixed temp. The new er transponder units stay quiet until stabilized. If you are operating in cold weather, it may take even longer to get a solid reading. Let us know what you find out. . . --------------------------------------------------------------------------- ----- ----- Original Message ----- From: Charlie England To: avionics-list@matronics.com Sent: Friday, September 25, 2015 5:44 AM Subject: Re: Avionics-List: Garmin Brain Teaser... 320A Transponder issue =2E... On September 25, 2015 5:40:22 AM CDT, SIDESLIP wrot e: cs experts can't seem to help.... Maybe someone here can. Mounted in a Zodi ac 601 XL-B is the above Transponder and encoder. Avionics experts tested i t on the ground, no engine running. Antenna is shielded. Turned on, and ran tests. PERFECT signal and perfect parameters. HOWEVER....In flight, ATC CA NNOT get ANY read on me for about 15-20mins. But they do get a read eventua lly for the most part. Sometimes they get me as soon as I hit 2000'asl. (46 0' elevation). Now.... This is secondary radar out of Toronto, approx 45sm away. Two days ago, I took off, no read, not even Mode A. Nada. Made a 9 m in flight north, then east further away from the radar station and after ab out 15mins, she got a perfect signal on me. Transponder matched my altitude and Ground speed no problem. Again.... Avionics specialist ran the system through extensive testing and he Web -- Sent from my Android device with K-9 Mail. 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