Hi all,
I'm troubleshooting the GPS puck in my legacy 12 with a dual Dynon setup. The SV-GPS-2020 was installed in 2019 and has worked well until this summer. The position lock has become increasingly flakey over the last few months. It's worse when it's hot outside, but doesn't go away in the cooler fall weather. Loading the data logs onto Savvy's system shows that GPS Fix Quality is typically 1 or 2, but occasionally becomes 0 for a few seconds. The Number of Satellites is generally 6 or 7 with a minimum of 4 and maximum of 9. Looking at SETUP MENU > LOCAL DISPLAY SETUP > GPS FIX STATUS when I'm having poor performance shows that although there may be 8 or 9 satellites in view, the system is often only using 4 satellites and reports Integrity: No. When 5 satellites are in use, Integrity = Yes, and the lock is more robust. The satellites are typically yellow (poor) or white (unusable), but rarely in green (acceptable).
I have reseated the wires & connectors from the SV-GPS-2020 to the AV5000. I have updated the firmware in the SV-XPNDR-262 and the SV-GPS-2020 was fully up to date.
Tech support at Dynon thinks that the location of the GPS puck in the RV-12 is suboptimal as it is essentially shielded by the firewall from the back and this is often further handicapped by conductive (metallic) paint. She recommends repositioning the GPS-2020 to a different location. They are willing to rent me a GPS-2020 for full price (refundable) and $100 and shipping & handling.
Has anyone had this kind of failure mode? Is it reasonable to suspect that the analog receiver circuitry is simply aging and failing? Has anyone moved (or thought about moving) their GPS puck? Has anyone installed a 2nd GPS puck in parallel?
Can interested souls check their SETUP MENU > LOCAL DISPLAY SETUP > GPS FIX STATUS while airborne and provide some data points on how other ships in the fleet are faring? Specifically, I'd like to know what the fleet typically sees with respect to number of satellites that are green, yellow or white when airborne.
Thanks for any advice, comments or commiserations,
-dbh
I'm troubleshooting the GPS puck in my legacy 12 with a dual Dynon setup. The SV-GPS-2020 was installed in 2019 and has worked well until this summer. The position lock has become increasingly flakey over the last few months. It's worse when it's hot outside, but doesn't go away in the cooler fall weather. Loading the data logs onto Savvy's system shows that GPS Fix Quality is typically 1 or 2, but occasionally becomes 0 for a few seconds. The Number of Satellites is generally 6 or 7 with a minimum of 4 and maximum of 9. Looking at SETUP MENU > LOCAL DISPLAY SETUP > GPS FIX STATUS when I'm having poor performance shows that although there may be 8 or 9 satellites in view, the system is often only using 4 satellites and reports Integrity: No. When 5 satellites are in use, Integrity = Yes, and the lock is more robust. The satellites are typically yellow (poor) or white (unusable), but rarely in green (acceptable).
I have reseated the wires & connectors from the SV-GPS-2020 to the AV5000. I have updated the firmware in the SV-XPNDR-262 and the SV-GPS-2020 was fully up to date.
Tech support at Dynon thinks that the location of the GPS puck in the RV-12 is suboptimal as it is essentially shielded by the firewall from the back and this is often further handicapped by conductive (metallic) paint. She recommends repositioning the GPS-2020 to a different location. They are willing to rent me a GPS-2020 for full price (refundable) and $100 and shipping & handling.
Has anyone had this kind of failure mode? Is it reasonable to suspect that the analog receiver circuitry is simply aging and failing? Has anyone moved (or thought about moving) their GPS puck? Has anyone installed a 2nd GPS puck in parallel?
Can interested souls check their SETUP MENU > LOCAL DISPLAY SETUP > GPS FIX STATUS while airborne and provide some data points on how other ships in the fleet are faring? Specifically, I'd like to know what the fleet typically sees with respect to number of satellites that are green, yellow or white when airborne.
Thanks for any advice, comments or commiserations,
-dbh
. It took a few years & my 2020 antenna failed too - expensive lesson & I’d prefer to have spent that money on avgas instead 
